Santoitchi

Santoitchi (San to itchi japonais ; littéralement « trois et un ») is a logic puzzle invented by Naoki Inaba (Japan). A rectangular or square grid contains numbers in some cells. The task is to blacken some empty cells according to the rules:

• All white cells must be divided on regions having the size of exactly three cells.
• Two black cells must not be orthogonally adjacent.
• Each region contains a number.
• A number indicates how many black cells share an edge with that region.

Cross+A peut résoudre les puzzles de 3 x 3 à 30 x 30. Puzzles sont enregistrés sous les fichiers avec l’extension *.SNDW.