Logic Masters Deutschland e.V.

Rules:

Normal 8x8 sudoku rules apply. Place the digits 1-8 into each row, column and 2x4 box.

Digits along all arrows sum to the digit inside their arrow's circle. Black and white lines are renban. Digits on them form a non-repeating, consecutive set of digits placed in any order. Clues outside the grid, in the rank and file headings of the chess board, are sandwich clues. Digits placed between the 1 and the 8 in the clue's row or column sum to the the clue total. Knight takes rook, the white dot in the grid separates two consecutive digits.

To Play:
SudokuPad