KenKen — 6×6
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Research Clues
About expert KenKen
Six-by-six grids with multi-cell cages that can span three or four cells. The digit range (1–6) means multiplication targets can get large, and the number of valid permutations per cage grows significantly.
You'll need to combine cage analysis with row/column scanning. When a cage has several valid fills, write down all of them, then see which digits appear in every option — those are guaranteed. Expert puzzles reward patience and systematic bookkeeping over flashes of insight.