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MathDoku has very similar rules as Killersudoku. A digit must occur exactly once per row and column. Unlike in the Killersudoku all the basic arithmetic operations are represented. The result for a block is marked with a number and the operation. For subtraction and sivision, it is no matter in what order are the operands.
Please note that in a block a number can occur several times!
There are no digits given, start therefore preferably with the smallest results per block.

You may print the current game with "print in b/w", also with the unique solution.
The solution should be unique, if not, please write us!

Other terms for this game are „Minuplu“, „Basic“, „KenDoku“, „CalcuDoku“ or „Yukendo“.

For in-between:

Mathdoku mit small fields in 5x5 6x6 and 7x7

For lunch:

The daily Mathdoku in 9x9 with 2 different levels

For quite a long lunch breaks (really):

Mathdoku in 12x12