How to Solve Norinori: Two Per Region, Dominoes Only
Every colored region holds exactly two shaded squares, and shaded squares pair off like dominoes that never touch. Region sizes are the only clue. Here is how to read them.
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How to Solve Nurikabe: Islands, Walls and the 2x2 Rule
Numbers are island sizes, everything else is one connected wall, and the wall can never form a 2x2 pool. Five deductions that crack most Nurikabe puzzles.
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How to Solve Hitori: Four Moves That Do Most of the Work
Hitori looks like a number puzzle but plays like a graph puzzle. Learn the sandwich, the triple, the pair and the connectivity check, then solve a real 5x5.
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