naked twin now generates a list of mappings from candidate pairs to their counts in rows and columns. In the case that the count of a candidate pair is exactly two in a row or column, we know that that particular candidate pair is a naked twin in that row or column. Work is still needed on processing within blocks.
naked twin now generates a list of mappings from candidate pairs to their counts in rows and columns. In the case that the count of a candidate pair is exactly two in a row or column, we know that that particular candidate pair is a naked twin in that row or column. Work is still needed on processing within blocks.

MehtaSahil/SudokuSolver