diff --git a/config.json b/config.json
index 1c8b2189..257fd0ee 100644
--- a/config.json
+++ b/config.json
@@ -59,236 +59,190 @@
     ],
     "practice": [
       {
-        "slug": "hello-world",
-        "name": "Hello World",
-        "uuid": "58c16459-348a-4536-8228-43379174735e",
+        "slug": "accumulate",
+        "name": "Accumulate",
+        "uuid": "86015770-603b-44cf-aedf-f2a7cf79c841",
         "practices": [],
         "prerequisites": [],
         "difficulty": 1,
+        "status": "deprecated",
         "topics": [
-          "strings"
+          "lists"
         ]
       },
       {
-        "slug": "two-fer",
-        "name": "Two Fer",
-        "uuid": "40f85461-c256-4b96-8d5b-0509f42fab17",
+        "slug": "acronym",
+        "name": "Acronym",
+        "uuid": "d8288e46-2e8c-42e4-8e14-20b1efd0f574",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 2,
+        "difficulty": 3,
         "topics": [
-          "conditionals",
+          "loops",
+          "parsing",
+          "searching",
           "strings"
         ]
       },
       {
-        "slug": "hamming",
-        "name": "Hamming",
-        "uuid": "7151ff23-ebc6-43d7-86b6-81cf0dd45309",
+        "slug": "armstrong-numbers",
+        "name": "Armstrong Numbers",
+        "uuid": "3905dff6-7835-44ff-a8c9-7f4d184ab714",
         "practices": [],
         "prerequisites": [],
         "difficulty": 3,
         "topics": [
-          "integers",
+          "algorithms",
           "loops",
-          "strings"
+          "math"
         ]
       },
       {
-        "slug": "gigasecond",
-        "name": "Gigasecond",
-        "uuid": "1eb4c9d3-0085-4ca3-b1bb-9a20b88a1e7f",
+        "slug": "binary",
+        "name": "Binary",
+        "uuid": "def44955-c048-4b74-8777-2fb7d779b09e",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 1,
+        "status": "deprecated",
         "topics": [
-          "dates",
-          "integers",
-          "time"
+          "strings"
         ]
       },
       {
-        "slug": "scrabble-score",
-        "name": "Scrabble Score",
-        "uuid": "4d8a68eb-eee9-4c51-97b8-57f3b69f5970",
+        "slug": "circular-buffer",
+        "name": "Circular Buffer",
+        "uuid": "e32c0edd-367c-4b66-b677-35e518d6831f",
         "practices": [],
-        "prerequisites": [],
-        "difficulty": 3,
-        "topics": [
-          "games",
-          "loops",
-          "pattern_matching",
-          "strings",
-          "transforming"
-        ]
+        "prerequisites": [
+          "generics"
+        ],
+        "difficulty": 3
       },
       {
-        "slug": "matrix",
-        "name": "Matrix",
-        "uuid": "46ab876c-cde2-4fa7-8970-b250ad8ccf74",
+        "slug": "crypto-square",
+        "name": "Crypto Square",
+        "uuid": "2928cf06-dab8-4522-a6d8-b2a15d7d356b",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 3,
         "topics": [
-          "loops",
           "strings",
-          "pattern_matching",
-          "type_conversion",
+          "text_formatting",
           "transforming"
         ]
       },
       {
-        "slug": "difference-of-squares",
-        "name": "Difference of Squares",
-        "uuid": "d54a68fc-02dd-45ee-8c6f-3efb781ed0d2",
+        "slug": "custom-set",
+        "name": "Custom Set",
+        "uuid": "10b6cca2-6c36-4017-9464-32aa11c59f85",
         "practices": [],
         "prerequisites": [],
         "difficulty": 3,
         "topics": [
-          "integers",
-          "loops",
-          "math"
+          "object_oriented_programming",
+          "sets",
+          "varargs"
         ]
       },
       {
-        "slug": "secret-handshake",
-        "name": "Secret Handshake",
-        "uuid": "feee3ee9-81d5-4a4f-ad98-e1ecf21757ed",
+        "slug": "dnd-character",
+        "name": "D&D Character",
+        "uuid": "a550dafa-bcec-448c-a7dd-af0ebd4e1070",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 1,
         "topics": [
-          "bitwise_operations",
-          "conditionals",
-          "cryptography",
-          "enumerations",
           "integers",
-          "loops",
-          "transforming"
+          "randomness"
         ]
       },
       {
-        "slug": "triangle",
-        "name": "Triangle",
-        "uuid": "e282536b-267f-490c-a453-758135051a54",
+        "slug": "darts",
+        "name": "Darts",
+        "uuid": "c2b49ff6-e7bf-40bb-b619-9cdfaa43c065",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 2,
         "topics": [
+          "pattern_matching",
           "conditionals",
-          "exception_handling",
-          "integers",
-          "recursion"
+          "math"
         ]
       },
       {
-        "slug": "saddle-points",
-        "name": "Saddle Points",
-        "uuid": "371901d4-0728-4abd-8374-1905d7d70329",
+        "slug": "difference-of-squares",
+        "name": "Difference of Squares",
+        "uuid": "d54a68fc-02dd-45ee-8c6f-3efb781ed0d2",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 3,
         "topics": [
-          "arrays",
-          "conditionals",
-          "exception_handling",
           "integers",
-          "loops"
+          "loops",
+          "math"
         ]
       },
       {
-        "slug": "flatten-array",
-        "name": "Flatten Array",
-        "uuid": "c67907b6-0d8b-4b12-9c41-6069845952a3",
+        "slug": "gigasecond",
+        "name": "Gigasecond",
+        "uuid": "1eb4c9d3-0085-4ca3-b1bb-9a20b88a1e7f",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
+        "difficulty": 3,
         "topics": [
-          "stacks",
-          "strings"
+          "dates",
+          "integers",
+          "time"
         ]
       },
       {
-        "slug": "word-count",
-        "name": "Word Count",
-        "uuid": "3b8b77ef-da2d-499d-9513-8fe771e86b3e",
+        "slug": "hamming",
+        "name": "Hamming",
+        "uuid": "7151ff23-ebc6-43d7-86b6-81cf0dd45309",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
+        "difficulty": 3,
         "topics": [
-          "conditionals",
           "integers",
           "loops",
-          "maps",
           "strings"
         ]
       },
       {
-        "slug": "robot-name",
-        "name": "Robot Name",
-        "uuid": "ce475b23-5dfc-4049-90c5-0c387926686f",
-        "practices": [],
-        "prerequisites": [],
-        "difficulty": 5,
-        "topics": [
-          "pattern_matching",
-          "randomness",
-          "regular_expressions",
-          "strings",
-          "text_formatting"
-        ]
-      },
-      {
-        "slug": "rotational-cipher",
-        "name": "Rotational Cipher",
-        "uuid": "7c24087a-ca61-48d3-9cb9-c3fde2edba86",
+        "slug": "hello-world",
+        "name": "Hello World",
+        "uuid": "58c16459-348a-4536-8228-43379174735e",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
+        "difficulty": 1,
         "topics": [
-          "cryptography",
-          "integers",
           "strings"
         ]
       },
       {
-        "slug": "bank-account",
-        "name": "Bank Account",
-        "uuid": "12e1d685-32be-4b2c-a40b-c68e5b60de1d",
+        "slug": "hexadecimal",
+        "name": "Hexadecimal",
+        "uuid": "13b1a62e-8e0e-4d57-b8c9-341b41f25cf5",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
+        "difficulty": 1,
+        "status": "deprecated",
         "topics": [
-          "concurrency",
-          "exception_handling",
+          "string",
           "integers"
         ]
       },
       {
-        "slug": "linked-list",
-        "name": "Linked List",
-        "uuid": "fc977979-c8a4-44b6-a685-c8a32bd12bc3",
-        "practices": [],
-        "prerequisites": [],
-        "difficulty": 6,
-        "topics": [
-          "algorithms",
-          "generics",
-          "lists"
-        ]
-      },
-      {
-        "slug": "binary-search",
-        "name": "Binary Search",
-        "uuid": "c8815b6c-19b8-4f4d-9be4-6717e933591a",
+        "slug": "leap",
+        "name": "Leap",
+        "uuid": "639e59b6-84aa-4f13-9718-537606703c43",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
+        "difficulty": 2,
         "topics": [
-          "arrays",
-          "generics",
-          "recursion",
-          "searching"
+          "conditionals",
+          "integers"
         ]
       },
       {
@@ -305,74 +259,58 @@
         ]
       },
       {
-        "slug": "raindrops",
-        "name": "Raindrops",
-        "uuid": "93ee76ba-d19f-4c72-b011-676f40dcda5e",
+        "slug": "perfect-numbers",
+        "name": "Perfect Numbers",
+        "uuid": "ad7c8fd8-acf0-40d0-8a30-d959c4b0252a",
         "practices": [],
         "prerequisites": [],
         "difficulty": 3,
         "topics": [
-          "conditionals",
+          "enumerations",
+          "exception_handling",
+          "filtering",
           "integers",
-          "strings"
+          "math"
         ]
       },
       {
-        "slug": "isogram",
-        "name": "Isogram",
-        "uuid": "e5338be9-6f51-4448-9b10-20de7b1338b9",
+        "slug": "protein-translation",
+        "name": "Protein Translation",
+        "uuid": "368ba5ef-8c54-4016-93df-3a7d3b136243",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 2,
         "topics": [
+          "algorithms",
+          "lists",
           "conditionals",
           "loops",
-          "parsing",
           "strings"
         ]
       },
       {
-        "slug": "protein-translation",
-        "name": "Protein Translation",
-        "uuid": "368ba5ef-8c54-4016-93df-3a7d3b136243",
+        "slug": "rna-transcription",
+        "name": "RNA Transcription",
+        "uuid": "9772c916-c619-445c-834d-af7dbf1ad2d9",
         "practices": [],
         "prerequisites": [],
         "difficulty": 2,
         "topics": [
-          "algorithms",
-          "lists",
-          "conditionals",
           "loops",
+          "maps",
           "strings"
         ]
       },
       {
-        "slug": "pig-latin",
-        "name": "Pig Latin",
-        "uuid": "cb2ce8e5-f143-4423-a3bc-959f4222c186",
+        "slug": "raindrops",
+        "name": "Raindrops",
+        "uuid": "93ee76ba-d19f-4c72-b011-676f40dcda5e",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
-        "topics": [
-          "arrays",
-          "lists",
-          "strings",
-          "transforming"
-        ]
-      },
-      {
-        "slug": "anagram",
-        "name": "Anagram",
-        "uuid": "f754e1cc-cb88-4776-ab11-3e6ae8362d5a",
-        "practices": [],
-        "prerequisites": [],
-        "difficulty": 7,
+        "difficulty": 3,
         "topics": [
-          "arrays",
           "conditionals",
-          "equality",
-          "lists",
-          "loops",
+          "integers",
           "strings"
         ]
       },
@@ -399,99 +337,111 @@
         ]
       },
       {
-        "slug": "rna-transcription",
-        "name": "RNA Transcription",
-        "uuid": "9772c916-c619-445c-834d-af7dbf1ad2d9",
+        "slug": "resistor-color-trio",
+        "name": "Resistor Color Trio",
+        "uuid": "ae4df67d-c848-42e6-9fd7-d3cec83c1691",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 2,
+        "difficulty": 3,
+        "topics": [
+          "math",
+          "type_conversion",
+          "lists"
+        ]
+      },
+      {
+        "slug": "reverse-string",
+        "name": "Reverse String",
+        "uuid": "95d495a6-b1a2-42d5-8190-443d6f94e80b",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 1,
         "topics": [
-          "loops",
-          "maps",
           "strings"
         ]
       },
       {
-        "slug": "diamond",
-        "name": "Diamond",
-        "uuid": "03c71e34-ecaf-47a4-9854-48600e1bf0d4",
+        "slug": "run-length-encoding",
+        "name": "Run-Length Encoding",
+        "uuid": "483b5124-b5b2-4bb0-aa69-b04e3ea6aeb6",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 3,
         "topics": [
-          "arrays",
-          "lists",
           "loops",
+          "regular_expressions",
           "strings",
-          "text_formatting"
+          "transforming",
+          "type_conversion"
         ]
       },
       {
-        "slug": "bob",
-        "name": "Bob",
-        "uuid": "f3713067-7f37-4dd6-a189-c80f46dab8ec",
+        "slug": "scale-generator",
+        "name": "Scale Generator",
+        "uuid": "dfa35a61-07da-4317-8c25-0c630e551d8c",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
+        "difficulty": 3,
         "topics": [
-          "booleans",
-          "conditionals",
+          "lists",
           "strings"
         ]
       },
       {
-        "slug": "beer-song",
-        "name": "Beer Song",
-        "uuid": "34f0e7d0-29df-44e5-a7a7-4a12584af62e",
+        "slug": "scrabble-score",
+        "name": "Scrabble Score",
+        "uuid": "4d8a68eb-eee9-4c51-97b8-57f3b69f5970",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
+        "difficulty": 3,
         "topics": [
-          "conditionals",
+          "games",
           "loops",
+          "pattern_matching",
           "strings",
-          "text_formatting",
-          "variables"
+          "transforming"
         ]
       },
       {
-        "slug": "acronym",
-        "name": "Acronym",
-        "uuid": "d8288e46-2e8c-42e4-8e14-20b1efd0f574",
+        "slug": "secret-handshake",
+        "name": "Secret Handshake",
+        "uuid": "feee3ee9-81d5-4a4f-ad98-e1ecf21757ed",
         "practices": [],
         "prerequisites": [],
         "difficulty": 3,
         "topics": [
+          "bitwise_operations",
+          "conditionals",
+          "cryptography",
+          "enumerations",
+          "integers",
           "loops",
-          "parsing",
-          "searching",
-          "strings"
+          "transforming"
         ]
       },
       {
-        "slug": "armstrong-numbers",
-        "name": "Armstrong Numbers",
-        "uuid": "3905dff6-7835-44ff-a8c9-7f4d184ab714",
+        "slug": "space-age",
+        "name": "Space Age",
+        "uuid": "a91ce7e9-9a2a-44de-b10c-cc1be63df2a1",
         "practices": [],
         "prerequisites": [],
         "difficulty": 3,
         "topics": [
-          "algorithms",
-          "loops",
-          "math"
+          "conditionals",
+          "floating_point_numbers"
         ]
       },
       {
-        "slug": "resistor-color-trio",
-        "name": "Resistor Color Trio",
-        "uuid": "ae4df67d-c848-42e6-9fd7-d3cec83c1691",
+        "slug": "strain",
+        "name": "Strain",
+        "uuid": "8ae8492d-620c-4446-9928-5b4d78d496d9",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 1,
+        "status": "deprecated",
         "topics": [
-          "math",
-          "type_conversion",
-          "lists"
+          "arrays",
+          "filtering"
         ]
       },
       {
@@ -509,385 +459,406 @@
         ]
       },
       {
-        "slug": "isbn-verifier",
-        "name": "ISBN Verifier",
-        "uuid": "400d8014-9f75-43da-8a1c-93d95d91f4d2",
+        "slug": "two-fer",
+        "name": "Two Fer",
+        "uuid": "40f85461-c256-4b96-8d5b-0509f42fab17",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 2,
         "topics": [
-          "integers",
-          "loops",
+          "conditionals",
           "strings"
         ]
       },
       {
-        "slug": "largest-series-product",
-        "name": "Largest Series Product",
-        "uuid": "aa11e242-77b9-4ba7-97a2-d9b36e454a9d",
+        "slug": "yacht",
+        "name": "Yacht",
+        "uuid": "2702ffe9-26c3-4f68-86dc-2993dfa2de91",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 3,
         "topics": [
-          "integers",
-          "loops",
-          "math",
-          "strings",
-          "type_conversion"
+          "enums",
+          "functional_programming",
+          "lists",
+          "pattern_matching"
         ]
       },
       {
-        "slug": "luhn",
-        "name": "Luhn",
-        "uuid": "3cf8a650-6a25-416e-a0af-036f41c11cca",
+        "slug": "affine-cipher",
+        "name": "Affine Cipher",
+        "uuid": "94fdd990-101b-4daf-8692-75085e6563f2",
         "practices": [],
         "prerequisites": [],
         "difficulty": 4,
         "topics": [
-          "algorithms",
-          "booleans",
-          "loops",
-          "strings",
-          "type_conversion"
+          "cryptography",
+          "security",
+          "strings"
         ]
       },
       {
-        "slug": "nucleotide-count",
-        "name": "Nucleotide Count",
-        "uuid": "62bd648a-e959-4ec4-8a5f-09e08fa0b2c8",
+        "slug": "all-your-base",
+        "name": "All Your Base",
+        "uuid": "19d00436-f26a-47ad-b13e-128181dc09f3",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
+        "difficulty": 6,
         "topics": [
+          "arrays",
           "conditionals",
           "exception_handling",
           "integers",
-          "maps",
-          "parsing",
-          "searching",
-          "strings"
+          "loops",
+          "math"
         ]
       },
       {
-        "slug": "phone-number",
-        "name": "Phone Number",
-        "uuid": "2c8c1c16-bbb8-49e5-a248-f7a473c2bc86",
+        "slug": "allergies",
+        "name": "Allergies",
+        "uuid": "a826af04-b7f3-426e-9bce-42375d0d928b",
         "practices": [],
         "prerequisites": [],
         "difficulty": 5,
         "topics": [
+          "booleans",
           "conditionals",
-          "pattern_matching",
-          "regular_expressions",
-          "strings"
+          "enumerations",
+          "integers",
+          "lists",
+          "loops"
         ]
       },
       {
-        "slug": "series",
-        "name": "Series",
-        "uuid": "9caa5fd9-a774-4d4c-951d-053a4f3f2726",
+        "slug": "atbash-cipher",
+        "name": "Atbash Cipher",
+        "uuid": "b325401a-c8f0-49da-9f1a-a83318e780c9",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
+        "difficulty": 4,
         "topics": [
-          "conditionals",
-          "lists",
-          "loops",
-          "strings",
-          "type_conversion"
+          "cryptography",
+          "security",
+          "strings"
         ]
       },
       {
-        "slug": "roman-numerals",
-        "name": "Roman Numerals",
-        "uuid": "da466ad5-6837-47d8-af39-2c0563d35a3c",
+        "slug": "bank-account",
+        "name": "Bank Account",
+        "uuid": "12e1d685-32be-4b2c-a40b-c68e5b60de1d",
         "practices": [],
         "prerequisites": [],
         "difficulty": 6,
         "topics": [
-          "integers",
-          "logic",
-          "loops",
-          "maps",
-          "strings"
+          "concurrency",
+          "exception_handling",
+          "integers"
         ]
       },
       {
-        "slug": "leap",
-        "name": "Leap",
-        "uuid": "639e59b6-84aa-4f13-9718-537606703c43",
+        "slug": "beer-song",
+        "name": "Beer Song",
+        "uuid": "34f0e7d0-29df-44e5-a7a7-4a12584af62e",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 2,
+        "difficulty": 6,
         "topics": [
           "conditionals",
-          "integers"
+          "loops",
+          "strings",
+          "text_formatting",
+          "variables"
         ]
       },
       {
-        "slug": "custom-set",
-        "name": "Custom Set",
-        "uuid": "10b6cca2-6c36-4017-9464-32aa11c59f85",
+        "slug": "binary-search",
+        "name": "Binary Search",
+        "uuid": "c8815b6c-19b8-4f4d-9be4-6717e933591a",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 6,
         "topics": [
-          "object_oriented_programming",
-          "sets",
-          "varargs"
+          "arrays",
+          "generics",
+          "recursion",
+          "searching"
         ]
       },
       {
-        "slug": "space-age",
-        "name": "Space Age",
-        "uuid": "a91ce7e9-9a2a-44de-b10c-cc1be63df2a1",
-        "practices": [],
-        "prerequisites": [],
-        "difficulty": 3,
+        "slug": "binary-search-tree",
+        "name": "Binary Search Tree",
+        "uuid": "12a9dd9f-28ed-4159-baf3-d28654cb8fa7",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 5,
         "topics": [
-          "conditionals",
-          "floating_point_numbers"
+          "arrays",
+          "generics",
+          "recursion",
+          "searching"
         ]
       },
       {
-        "slug": "allergies",
-        "name": "Allergies",
-        "uuid": "a826af04-b7f3-426e-9bce-42375d0d928b",
+        "slug": "bob",
+        "name": "Bob",
+        "uuid": "f3713067-7f37-4dd6-a189-c80f46dab8ec",
         "practices": [],
         "prerequisites": [],
         "difficulty": 5,
         "topics": [
           "booleans",
           "conditionals",
-          "enumerations",
-          "integers",
-          "lists",
-          "loops"
+          "strings"
         ]
       },
       {
-        "slug": "meetup",
-        "name": "Meetup",
-        "uuid": "d617987e-64b8-4c21-89a9-66a932c4668d",
+        "slug": "bowling",
+        "name": "Bowling",
+        "uuid": "ae084405-48d7-43ea-9bc5-6c4ebae4c1ef",
+        "practices": [],
+        "prerequisites": [
+          "for-loops",
+          "arrays"
+        ],
+        "difficulty": 6
+      },
+      {
+        "slug": "collatz-conjecture",
+        "name": "Collatz Conjecture",
+        "uuid": "ab52d0f4-a001-4d44-951e-0cfc396374f3",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 7,
+        "difficulty": 4,
         "topics": [
           "conditionals",
-          "dates",
-          "enumerations",
-          "loops"
+          "exception_handling",
+          "integers",
+          "math",
+          "recursion"
         ]
       },
       {
-        "slug": "crypto-square",
-        "name": "Crypto Square",
-        "uuid": "2928cf06-dab8-4522-a6d8-b2a15d7d356b",
+        "slug": "diamond",
+        "name": "Diamond",
+        "uuid": "03c71e34-ecaf-47a4-9854-48600e1bf0d4",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 4,
         "topics": [
+          "arrays",
+          "lists",
+          "loops",
           "strings",
-          "text_formatting",
-          "transforming"
+          "text_formatting"
         ]
       },
       {
-        "slug": "run-length-encoding",
-        "name": "Run-Length Encoding",
-        "uuid": "483b5124-b5b2-4bb0-aa69-b04e3ea6aeb6",
+        "slug": "etl",
+        "name": "ETL",
+        "uuid": "f0f297f2-429f-4626-8b7f-0706a1e8f255",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 6,
         "topics": [
-          "loops",
-          "regular_expressions",
-          "strings",
-          "transforming",
-          "type_conversion"
+          "lists",
+          "maps",
+          "transforming"
         ]
       },
       {
-        "slug": "scale-generator",
-        "name": "Scale Generator",
-        "uuid": "dfa35a61-07da-4317-8c25-0c630e551d8c",
+        "slug": "flatten-array",
+        "name": "Flatten Array",
+        "uuid": "c67907b6-0d8b-4b12-9c41-6069845952a3",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 5,
         "topics": [
-          "lists",
+          "stacks",
           "strings"
         ]
       },
       {
-        "slug": "wordy",
-        "name": "Wordy",
-        "uuid": "3c7a3c6b-8dc7-4e5a-ba72-e1a4bffb0bc4",
+        "slug": "forth",
+        "name": "Forth",
+        "uuid": "81d48ea4-0e88-45f2-839f-fe13e2059e92",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
+        "difficulty": 4,
         "topics": [
-          "loops",
           "pattern_matching",
-          "strings",
-          "recursion"
+          "integers"
         ]
       },
       {
-        "slug": "minesweeper",
-        "name": "Minesweeper",
-        "uuid": "8eb6f225-fa3d-4a33-b476-2cae45053c82",
+        "slug": "grade-school",
+        "name": "Grade School",
+        "uuid": "62eb71dd-18ba-427f-a27a-86e993b4055a",
         "practices": [],
         "prerequisites": [],
         "difficulty": 6,
         "topics": [
           "conditionals",
-          "games",
-          "integers",
           "lists",
-          "matrices",
+          "maps",
+          "sorting",
           "strings"
         ]
       },
       {
-        "slug": "dominoes",
-        "name": "Dominoes",
-        "uuid": "c52c4b61-dca2-4b73-87b6-b4f2f63d9fdb",
+        "slug": "grains",
+        "name": "Grains",
+        "uuid": "1fa1e0f9-6410-4197-8778-debeb274e6d4",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 7,
+        "difficulty": 4,
         "topics": [
-          "algorithms",
-          "exception_handling",
-          "games",
-          "lists"
+          "integers"
         ]
       },
       {
-        "slug": "perfect-numbers",
-        "name": "Perfect Numbers",
-        "uuid": "ad7c8fd8-acf0-40d0-8a30-d959c4b0252a",
+        "slug": "isbn-verifier",
+        "name": "ISBN Verifier",
+        "uuid": "400d8014-9f75-43da-8a1c-93d95d91f4d2",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 4,
         "topics": [
-          "enumerations",
-          "exception_handling",
-          "filtering",
           "integers",
-          "math"
+          "loops",
+          "strings"
         ]
       },
       {
-        "slug": "yacht",
-        "name": "Yacht",
-        "uuid": "2702ffe9-26c3-4f68-86dc-2993dfa2de91",
+        "slug": "isogram",
+        "name": "Isogram",
+        "uuid": "e5338be9-6f51-4448-9b10-20de7b1338b9",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
+        "difficulty": 4,
         "topics": [
-          "enums",
-          "functional_programming",
-          "lists",
-          "pattern_matching"
+          "conditionals",
+          "loops",
+          "parsing",
+          "strings"
         ]
       },
       {
-        "slug": "sieve",
-        "name": "Sieve",
-        "uuid": "87ca4323-8a19-4529-962d-0f2ee63ebb2f",
+        "slug": "kindergarten-garden",
+        "name": "Kindergarten Garden",
+        "uuid": "1603e77a-0fbc-43ed-8200-b86a4219af8d",
         "practices": [],
         "prerequisites": [],
         "difficulty": 4,
         "topics": [
-          "algorithms",
-          "integers",
+          "arrays",
+          "enumerations",
           "lists",
+          "logic",
           "loops",
-          "math"
+          "pattern_recognition",
+          "strings"
         ]
       },
       {
-        "slug": "sum-of-multiples",
-        "name": "Sum of Multiples",
-        "uuid": "d3f960e5-cf19-4308-a1bc-897777f62689",
+        "slug": "knapsack",
+        "name": "Knapsack",
+        "uuid": "1c2e8e65-1d1f-43ce-a626-70769f8bae5f",
+        "practices": [],
+        "prerequisites": [
+          "arrays",
+          "loops",
+          "lists",
+          "conditionals"
+        ],
+        "difficulty": 5,
+        "topics": [
+          "algorithms",
+          "logic"
+        ]
+      },
+      {
+        "slug": "largest-series-product",
+        "name": "Largest Series Product",
+        "uuid": "aa11e242-77b9-4ba7-97a2-d9b36e454a9d",
         "practices": [],
         "prerequisites": [],
         "difficulty": 4,
         "topics": [
-          "arrays",
-          "conditionals",
           "integers",
           "loops",
-          "math"
+          "math",
+          "strings",
+          "type_conversion"
         ]
       },
       {
-        "slug": "forth",
-        "name": "Forth",
-        "uuid": "81d48ea4-0e88-45f2-839f-fe13e2059e92",
+        "slug": "linked-list",
+        "name": "Linked List",
+        "uuid": "fc977979-c8a4-44b6-a685-c8a32bd12bc3",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 6,
         "topics": [
-          "pattern_matching",
-          "integers"
+          "algorithms",
+          "generics",
+          "lists"
         ]
       },
       {
-        "slug": "grains",
-        "name": "Grains",
-        "uuid": "1fa1e0f9-6410-4197-8778-debeb274e6d4",
+        "slug": "luhn",
+        "name": "Luhn",
+        "uuid": "3cf8a650-6a25-416e-a0af-036f41c11cca",
         "practices": [],
         "prerequisites": [],
         "difficulty": 4,
         "topics": [
-          "integers"
+          "algorithms",
+          "booleans",
+          "loops",
+          "strings",
+          "type_conversion"
         ]
       },
       {
-        "slug": "robot-simulator",
-        "name": "Robot Simulator",
-        "uuid": "6e3b294b-16a3-4ebb-a78b-4bf7f6b96736",
+        "slug": "matching-brackets",
+        "name": "Matching Brackets",
+        "uuid": "cbbbd7db-224f-45ca-a108-4dc6bc98e4a0",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
+        "difficulty": 5,
         "topics": [
-          "classes",
-          "enumerations",
-          "logic",
-          "loops"
+          "stacks",
+          "strings"
         ]
       },
       {
-        "slug": "collatz-conjecture",
-        "name": "Collatz Conjecture",
-        "uuid": "ab52d0f4-a001-4d44-951e-0cfc396374f3",
+        "slug": "matrix",
+        "name": "Matrix",
+        "uuid": "46ab876c-cde2-4fa7-8970-b250ad8ccf74",
         "practices": [],
         "prerequisites": [],
         "difficulty": 4,
         "topics": [
-          "conditionals",
-          "exception_handling",
-          "integers",
-          "math",
-          "recursion"
+          "loops",
+          "strings",
+          "pattern_matching",
+          "type_conversion",
+          "transforming"
         ]
       },
       {
-        "slug": "kindergarten-garden",
-        "name": "Kindergarten Garden",
-        "uuid": "1603e77a-0fbc-43ed-8200-b86a4219af8d",
+        "slug": "minesweeper",
+        "name": "Minesweeper",
+        "uuid": "8eb6f225-fa3d-4a33-b476-2cae45053c82",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 6,
         "topics": [
-          "arrays",
-          "enumerations",
+          "conditionals",
+          "games",
+          "integers",
           "lists",
-          "logic",
-          "loops",
-          "pattern_recognition",
+          "matrices",
           "strings"
         ]
       },
@@ -907,6 +878,23 @@
           "math"
         ]
       },
+      {
+        "slug": "nucleotide-count",
+        "name": "Nucleotide Count",
+        "uuid": "62bd648a-e959-4ec4-8a5f-09e08fa0b2c8",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 5,
+        "topics": [
+          "conditionals",
+          "exception_handling",
+          "integers",
+          "maps",
+          "parsing",
+          "searching",
+          "strings"
+        ]
+      },
       {
         "slug": "pascals-triangle",
         "name": "Pascal's Triangle",
@@ -923,6 +911,34 @@
           "matrices"
         ]
       },
+      {
+        "slug": "phone-number",
+        "name": "Phone Number",
+        "uuid": "2c8c1c16-bbb8-49e5-a248-f7a473c2bc86",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 5,
+        "topics": [
+          "conditionals",
+          "pattern_matching",
+          "regular_expressions",
+          "strings"
+        ]
+      },
+      {
+        "slug": "pig-latin",
+        "name": "Pig Latin",
+        "uuid": "cb2ce8e5-f143-4423-a3bc-959f4222c186",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 5,
+        "topics": [
+          "arrays",
+          "lists",
+          "strings",
+          "transforming"
+        ]
+      },
       {
         "slug": "prime-factors",
         "name": "Prime Factors",
@@ -940,222 +956,261 @@
         ]
       },
       {
-        "slug": "complex-numbers",
-        "name": "Complex Numbers",
-        "uuid": "83dec96f-9cdf-4b9b-abc4-cbd2066d919a",
+        "slug": "rail-fence-cipher",
+        "name": "Rail Fence Cipher",
+        "uuid": "49e730fb-7031-4de9-9bfd-b86564f20d8a",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 8,
+        "difficulty": 6,
         "topics": [
-          "floating_point_numbers",
-          "math"
+          "cryptography",
+          "algorithms",
+          "strings",
+          "transforming"
         ]
       },
       {
-        "slug": "all-your-base",
-        "name": "All Your Base",
-        "uuid": "19d00436-f26a-47ad-b13e-128181dc09f3",
+        "slug": "robot-name",
+        "name": "Robot Name",
+        "uuid": "ce475b23-5dfc-4049-90c5-0c387926686f",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 5,
+        "topics": [
+          "pattern_matching",
+          "randomness",
+          "regular_expressions",
+          "strings",
+          "text_formatting"
+        ]
+      },
+      {
+        "slug": "robot-simulator",
+        "name": "Robot Simulator",
+        "uuid": "6e3b294b-16a3-4ebb-a78b-4bf7f6b96736",
         "practices": [],
         "prerequisites": [],
         "difficulty": 6,
         "topics": [
-          "arrays",
-          "conditionals",
-          "exception_handling",
-          "integers",
-          "loops",
-          "math"
+          "classes",
+          "enumerations",
+          "logic",
+          "loops"
         ]
       },
       {
-        "slug": "clock",
-        "name": "Clock",
-        "uuid": "1dcefdea-5447-4622-a064-079aad781398",
+        "slug": "roman-numerals",
+        "name": "Roman Numerals",
+        "uuid": "da466ad5-6837-47d8-af39-2c0563d35a3c",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 7,
+        "difficulty": 6,
         "topics": [
-          "equality",
           "integers",
           "logic",
-          "object_oriented_programming",
-          "strings",
-          "time"
+          "loops",
+          "maps",
+          "strings"
         ]
       },
       {
-        "slug": "matching-brackets",
-        "name": "Matching Brackets",
-        "uuid": "cbbbd7db-224f-45ca-a108-4dc6bc98e4a0",
+        "slug": "rotational-cipher",
+        "name": "Rotational Cipher",
+        "uuid": "7c24087a-ca61-48d3-9cb9-c3fde2edba86",
         "practices": [],
         "prerequisites": [],
         "difficulty": 5,
         "topics": [
-          "stacks",
+          "cryptography",
+          "integers",
           "strings"
         ]
       },
       {
-        "slug": "spiral-matrix",
-        "name": "Spiral Matrix",
-        "uuid": "e3407da5-0524-4565-b724-9778bba1033f",
+        "slug": "saddle-points",
+        "name": "Saddle Points",
+        "uuid": "371901d4-0728-4abd-8374-1905d7d70329",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
+        "difficulty": 4,
         "topics": [
           "arrays",
+          "conditionals",
+          "exception_handling",
           "integers",
-          "loops",
-          "matrices"
+          "loops"
         ]
       },
       {
-        "slug": "change",
-        "name": "Change",
-        "uuid": "0d69c1cd-f190-4b3b-8472-bf78c02acbc5",
+        "slug": "say",
+        "name": "Say",
+        "uuid": "5607dae5-13aa-4cd4-8b4c-d270516182d7",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 8,
+        "difficulty": 6,
         "topics": [
-          "algorithms",
-          "exception_handling",
-          "integers",
-          "lists"
+          "strings",
+          "transforming"
         ]
       },
       {
-        "slug": "binary-search-tree",
-        "name": "Binary Search Tree",
-        "uuid": "12a9dd9f-28ed-4159-baf3-d28654cb8fa7",
+        "slug": "series",
+        "name": "Series",
+        "uuid": "9caa5fd9-a774-4d4c-951d-053a4f3f2726",
         "practices": [],
         "prerequisites": [],
         "difficulty": 5,
         "topics": [
-          "arrays",
-          "generics",
-          "recursion",
-          "searching"
+          "conditionals",
+          "lists",
+          "loops",
+          "strings",
+          "type_conversion"
         ]
       },
       {
-        "slug": "bowling",
-        "name": "Bowling",
-        "uuid": "ae084405-48d7-43ea-9bc5-6c4ebae4c1ef",
+        "slug": "sieve",
+        "name": "Sieve",
+        "uuid": "87ca4323-8a19-4529-962d-0f2ee63ebb2f",
         "practices": [],
-        "prerequisites": [
-          "for-loops",
-          "arrays"
-        ],
-        "difficulty": 6
+        "prerequisites": [],
+        "difficulty": 4,
+        "topics": [
+          "algorithms",
+          "integers",
+          "lists",
+          "loops",
+          "math"
+        ]
       },
       {
-        "slug": "etl",
-        "name": "ETL",
-        "uuid": "f0f297f2-429f-4626-8b7f-0706a1e8f255",
+        "slug": "spiral-matrix",
+        "name": "Spiral Matrix",
+        "uuid": "e3407da5-0524-4565-b724-9778bba1033f",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
+        "difficulty": 5,
         "topics": [
-          "lists",
-          "maps",
-          "transforming"
+          "arrays",
+          "integers",
+          "loops",
+          "matrices"
         ]
       },
       {
-        "slug": "grade-school",
-        "name": "Grade School",
-        "uuid": "62eb71dd-18ba-427f-a27a-86e993b4055a",
+        "slug": "sum-of-multiples",
+        "name": "Sum of Multiples",
+        "uuid": "d3f960e5-cf19-4308-a1bc-897777f62689",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
+        "difficulty": 4,
         "topics": [
+          "arrays",
           "conditionals",
-          "lists",
-          "maps",
-          "sorting",
-          "strings"
+          "integers",
+          "loops",
+          "math"
         ]
       },
       {
-        "slug": "affine-cipher",
-        "name": "Affine Cipher",
-        "uuid": "94fdd990-101b-4daf-8692-75085e6563f2",
+        "slug": "triangle",
+        "name": "Triangle",
+        "uuid": "e282536b-267f-490c-a453-758135051a54",
         "practices": [],
         "prerequisites": [],
         "difficulty": 4,
         "topics": [
-          "cryptography",
-          "security",
-          "strings"
+          "conditionals",
+          "exception_handling",
+          "integers",
+          "recursion"
         ]
       },
       {
-        "slug": "atbash-cipher",
-        "name": "Atbash Cipher",
-        "uuid": "b325401a-c8f0-49da-9f1a-a83318e780c9",
+        "slug": "word-count",
+        "name": "Word Count",
+        "uuid": "3b8b77ef-da2d-499d-9513-8fe771e86b3e",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
+        "difficulty": 5,
         "topics": [
-          "cryptography",
-          "security",
+          "conditionals",
+          "integers",
+          "loops",
+          "maps",
           "strings"
         ]
       },
       {
-        "slug": "rail-fence-cipher",
-        "name": "Rail Fence Cipher",
-        "uuid": "49e730fb-7031-4de9-9bfd-b86564f20d8a",
+        "slug": "wordy",
+        "name": "Wordy",
+        "uuid": "3c7a3c6b-8dc7-4e5a-ba72-e1a4bffb0bc4",
         "practices": [],
         "prerequisites": [],
         "difficulty": 6,
         "topics": [
-          "cryptography",
-          "algorithms",
+          "loops",
+          "pattern_matching",
           "strings",
-          "transforming"
+          "recursion"
         ]
       },
       {
-        "slug": "say",
-        "name": "Say",
-        "uuid": "5607dae5-13aa-4cd4-8b4c-d270516182d7",
+        "slug": "anagram",
+        "name": "Anagram",
+        "uuid": "f754e1cc-cb88-4776-ab11-3e6ae8362d5a",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
+        "difficulty": 7,
         "topics": [
-          "strings",
-          "transforming"
+          "arrays",
+          "conditionals",
+          "equality",
+          "lists",
+          "loops",
+          "strings"
         ]
       },
       {
-        "slug": "simple-cipher",
-        "name": "Simple Cipher",
-        "uuid": "e23b06de-bd91-482f-9783-b0334b75b489",
+        "slug": "change",
+        "name": "Change",
+        "uuid": "0d69c1cd-f190-4b3b-8472-bf78c02acbc5",
         "practices": [],
         "prerequisites": [],
         "difficulty": 8,
         "topics": [
-          "cryptography",
+          "algorithms",
           "exception_handling",
-          "randomness",
-          "security",
-          "strings"
+          "integers",
+          "lists"
         ]
       },
       {
-        "slug": "sublist",
-        "name": "Sublist",
-        "uuid": "ebfdf40a-1fde-4c88-aa93-95e3190f5261",
+        "slug": "clock",
+        "name": "Clock",
+        "uuid": "1dcefdea-5447-4622-a064-079aad781398",
         "practices": [],
         "prerequisites": [],
         "difficulty": 7,
         "topics": [
-          "enumerations",
-          "generics",
-          "lists",
-          "loops",
-          "searching"
+          "equality",
+          "integers",
+          "logic",
+          "object_oriented_programming",
+          "strings",
+          "time"
+        ]
+      },
+      {
+        "slug": "complex-numbers",
+        "name": "Complex Numbers",
+        "uuid": "83dec96f-9cdf-4b9b-abc4-cbd2066d919a",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 8,
+        "topics": [
+          "floating_point_numbers",
+          "math"
         ]
       },
       {
@@ -1172,6 +1227,20 @@
           "integers"
         ]
       },
+      {
+        "slug": "dominoes",
+        "name": "Dominoes",
+        "uuid": "c52c4b61-dca2-4b73-87b6-b4f2f63d9fdb",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 7,
+        "topics": [
+          "algorithms",
+          "exception_handling",
+          "games",
+          "lists"
+        ]
+      },
       {
         "slug": "list-ops",
         "name": "List Ops",
@@ -1188,17 +1257,17 @@
         ]
       },
       {
-        "slug": "zebra-puzzle",
-        "name": "Zebra Puzzle",
-        "uuid": "fe876a9b-2991-4624-a6fe-4311cb78f068",
+        "slug": "meetup",
+        "name": "Meetup",
+        "uuid": "d617987e-64b8-4c21-89a9-66a932c4668d",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 9,
+        "difficulty": 7,
         "topics": [
-          "algorithms",
-          "arrays",
           "conditionals",
-          "games"
+          "dates",
+          "enumerations",
+          "loops"
         ]
       },
       {
@@ -1216,117 +1285,48 @@
         ]
       },
       {
-        "slug": "accumulate",
-        "name": "Accumulate",
-        "uuid": "86015770-603b-44cf-aedf-f2a7cf79c841",
-        "practices": [],
-        "prerequisites": [],
-        "difficulty": 1,
-        "status": "deprecated",
-        "topics": [
-          "lists"
-        ]
-      },
-      {
-        "slug": "binary",
-        "name": "Binary",
-        "uuid": "def44955-c048-4b74-8777-2fb7d779b09e",
+        "slug": "simple-cipher",
+        "name": "Simple Cipher",
+        "uuid": "e23b06de-bd91-482f-9783-b0334b75b489",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1,
-        "status": "deprecated",
+        "difficulty": 8,
         "topics": [
+          "cryptography",
+          "exception_handling",
+          "randomness",
+          "security",
           "strings"
         ]
       },
       {
-        "slug": "hexadecimal",
-        "name": "Hexadecimal",
-        "uuid": "13b1a62e-8e0e-4d57-b8c9-341b41f25cf5",
+        "slug": "sublist",
+        "name": "Sublist",
+        "uuid": "ebfdf40a-1fde-4c88-aa93-95e3190f5261",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1,
-        "status": "deprecated",
+        "difficulty": 7,
         "topics": [
-          "string",
-          "integers"
+          "enumerations",
+          "generics",
+          "lists",
+          "loops",
+          "searching"
         ]
       },
       {
-        "slug": "strain",
-        "name": "Strain",
-        "uuid": "8ae8492d-620c-4446-9928-5b4d78d496d9",
+        "slug": "zebra-puzzle",
+        "name": "Zebra Puzzle",
+        "uuid": "fe876a9b-2991-4624-a6fe-4311cb78f068",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1,
-        "status": "deprecated",
+        "difficulty": 9,
         "topics": [
+          "algorithms",
           "arrays",
-          "filtering"
-        ]
-      },
-      {
-        "slug": "dnd-character",
-        "name": "D&D Character",
-        "uuid": "a550dafa-bcec-448c-a7dd-af0ebd4e1070",
-        "practices": [],
-        "prerequisites": [],
-        "difficulty": 1,
-        "topics": [
-          "integers",
-          "randomness"
-        ]
-      },
-      {
-        "slug": "reverse-string",
-        "name": "Reverse String",
-        "uuid": "95d495a6-b1a2-42d5-8190-443d6f94e80b",
-        "practices": [],
-        "prerequisites": [],
-        "difficulty": 1,
-        "topics": [
-          "strings"
-        ]
-      },
-      {
-        "slug": "darts",
-        "name": "Darts",
-        "uuid": "c2b49ff6-e7bf-40bb-b619-9cdfaa43c065",
-        "practices": [],
-        "prerequisites": [],
-        "difficulty": 2,
-        "topics": [
-          "pattern_matching",
           "conditionals",
-          "math"
-        ]
-      },
-      {
-        "slug": "knapsack",
-        "name": "Knapsack",
-        "uuid": "1c2e8e65-1d1f-43ce-a626-70769f8bae5f",
-        "practices": [],
-        "prerequisites": [
-          "arrays",
-          "loops",
-          "lists",
-          "conditionals"
-        ],
-        "difficulty": 5,
-        "topics": [
-          "algorithms",
-          "logic"
+          "games"
         ]
-      },
-      {
-        "slug": "circular-buffer",
-        "name": "Circular Buffer",
-        "uuid": "e32c0edd-367c-4b66-b677-35e518d6831f",
-        "practices": [],
-        "prerequisites": [
-          "generics"
-        ],
-        "difficulty": 3
       }
     ]
   },