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Calcudoku puzzles

My database includes 18223 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row and every column contains the digits 1 through 8. Each box must also be calculated according to number and operator. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

511655 puzzles downloaded.

8+
16+
13+
2/
9+
7/
5-
10+
15+
28+
20+
18+
9+
9+
13+
7+
25+
5/
12+
5-
11+
13+
8
Showing puzzle number: 3551
Puzzletype: Plus,Minus,Divide
Startnumbers: 64
Difficulty: Impossible ()
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