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Play Sumdoku Online
Sumdoku is an interesting variant on killer sudoku, which of course is itself a variant of sudoku.
In this puzzle you have the familiar killer regions: the row, column and 3x2 box, marked by dark lines in the puzzle. However, you also have various coloured regions that this time aren't just sums as in killer sudoku, but also contain other mathematical operations such as subtraction.
100 Sumdoku
If you are logged in to your account, click the links below to play any of a 100 Sumdoku puzzles.
Puzzle 1
Puzzle 2
Puzzle 3
Puzzle 4
Puzzle 5
Puzzle 6
Puzzle 7
Puzzle 8
Puzzle 9
Puzzle 10
Puzzle 11
Puzzle 12
Puzzle 13
Puzzle 14
Puzzle 15
Puzzle 16
Puzzle 17
Puzzle 18
Puzzle 19
Puzzle 20
Puzzle 21
Puzzle 22
Puzzle 23
Puzzle 24
Puzzle 25
Puzzle 26
Puzzle 27
Puzzle 28
Puzzle 29
Puzzle 30
Puzzle 31
Puzzle 32
Puzzle 33
Puzzle 34
Puzzle 35
Puzzle 36
Puzzle 37
Puzzle 38
Puzzle 39
Puzzle 40
Puzzle 41
Puzzle 42
Puzzle 43
Puzzle 44
Puzzle 45
Puzzle 46
Puzzle 47
Puzzle 48
Puzzle 49
Puzzle 50
Puzzle 51
Puzzle 52
Puzzle 53
Puzzle 54
Puzzle 55
Puzzle 56
Puzzle 57
Puzzle 58
Puzzle 59
Puzzle 60
Puzzle 61
Puzzle 62
Puzzle 63
Puzzle 64
Puzzle 65
Puzzle 66
Puzzle 67
Puzzle 68
Puzzle 69
Puzzle 70
Puzzle 71
Puzzle 72
Puzzle 73
Puzzle 74
Puzzle 75
Puzzle 76
Puzzle 77
Puzzle 78
Puzzle 79
Puzzle 80
Puzzle 81
Puzzle 82
Puzzle 83
Puzzle 84
Puzzle 85
Puzzle 86
Puzzle 87
Puzzle 88
Puzzle 89
Puzzle 90
Puzzle 91
Puzzle 92
Puzzle 93
Puzzle 94
Puzzle 95
Puzzle 96
Puzzle 97
Puzzle 98
Puzzle 99
Puzzle 100
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