Numbers in a squareNew puzzle!
Patterns
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Place numbers 1,2,.., 9 without repetitions into a 3x3 square so that the sums in all rows, columns, and diagonals are all equal.
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Weighings 9
Tasks to identify an object by its weight. A variety of algorithmic problems.
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В три раза больше задач покажем сразу после регистрации