Twin Corresponding Diagonal Anti-knight Sudoku Hard

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Twin Corresponding Diagonal Anti-knight Sudoku(Hard) https://gridpuzzle.com/twin-x-anti-knight/21rnd

Latest score list for #21rnd
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Latest score list for Twin Corresponding Diagonal Anti-knight Sudoku
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10'24'' guest solved puzzle No#n52w9;
anonymous
14'59'' anonymous solved puzzle No#x8ejp;
Rehab
14'0'' Rehab solved puzzle No#6dn7j;
anonymous
14'16'' anonymous solved puzzle No#45978;
anonymous
13'39'' anonymous solved puzzle No#45978;
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14'6'' Urgent solved puzzle No#x8pwd;

How to play Twin Corresponding Diagonal Anti-knight Sudoku

Twin Corresponding Diagonal Anti-knight Sudoku = Twin Corresponding Sudoku + Diagonal Sudoku + Anti-knight Sudoku

Twin Corresponding Diagonal Anti-knight Sudoku Additional Rules

  • Anti-Knight Sudoku all cells at a chess knight move (at a distance of 2 by 1) must hold different numbers.

  • Diagonal Sudoku Rule: Sudoku main diagonals also contain the digits 1 through 9.

Twin Corresponding Diagonal Anti-knight Sudoku = Twin Corresponding Sudoku + Diagonal Sudoku + Anti-knight Sudoku