Normal 4x4 sudoku rules apply.
Place the digits 1-4 once in every row, column and 3x3 box.
You are the white king in a chess match.
White pawn:
Digits one diagonal move away from a white pawn must be
consecutive with the digit on the pawn.
Gray pawn:
Digits one diagonal move away from a gray pawn must be of 1:2 ratio with the digit on the pawn.
In this puzzle, pawn moves are shown via gray lines.
Note: This is the "2" because the 1 is less interesting.
Solution code: 3rd and 4th row
Please note: The German version of this page has changed. It is possible that this page does not contain the latest information.