'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

Process completed with exit code 1.

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

Process completed with exit code 1.

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)

'Position' does not contain a definition for 'IsInCheck' and no accessible extension method 'IsInCheck' accepting a first argument of type 'Position' could be found (are you missing a using directive or an assembly reference?)