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c++ Programming Glossary: tactic

Sudoku backtracking algorithm

http://stackoverflow.com/questions/7695926/sudoku-backtracking-algorithm

is one row or one column or one square region 3x3 or 4x4 . Tactic 1 If there are K squares in a region that can take only identical.. other squares. This leaves square A with only number 1. Tactic 2 If a number occurs in the region in only one square then logically.. one square then logically that square holds that number. Tactic 3 Tactics 1 and 2 are only special cases of Tactic 3 having..