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Rule of 21
The Rule of 21 applies to 6 x 6 KenKen puzzles.
It states that any row or column must add up to 21 (1+2+3+4+5+6) and therefore conclusions can be drawn from the overlap of cages.
Documentation to follow
It states that any row or column must add up to 21 (1+2+3+4+5+6) and therefore conclusions can be drawn from the overlap of cages.
Documentation to follow