1,000 + Calcudoku sudoku 8x8: Logic puzzles medium - hard levels

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Calcudoku puzzle forum - View topic - Step by step: very difficult 8x8 mod function (2012-03-22)

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Positive brain awesome game. Suitable for adults and children. 6 puzzles per page. 250 CalcuDoku sudoku puzzles 8x8 easy levels. 250 CalcuDoku sudoku

1,000 + Calcudoku sudoku 8x8: Logic puzzles easy - medium - hard - extreme levels (Sudoku CalcuDoku)

Basford Holmes · 200 Kakuro and 200 Calcudocu 9x9 All Levels. (Paperback Book) (2019)

Basford Holmes · 200 Kakuro 15x15 + 16x16 + 17x17 + 18x18 and 200 Tridoku Hard Levels (Paperback Book) (2019)

400 KaKuro 14x14 + 16x16 + 18x18 + 20x20: Amazing sudoku logic puzzles. Holmes presents to your attention powerful, proven intelligent puzzles. (pluz downlo…

200 Kakuro and 200 Killer Sudoku puzzles. Easy and medium levels.: Kakuro 9x9 + 10x10 + 11x11 + 12x12 and Sumdoku 8x8 easy + 9x9 medium Sudoku puzzles

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