Titlebook: Sudoku Programming with C; Giulio Zambon Book 2015 Giulio Zambon 2015

外星人

,Implementing “Pointing Line”,As I explained in Chapter 2, pointing-line is similar to box-line in that they both look at the intersection of a line with a box. Therefore, it is not surprising that the implementations of the two strategies are quite similar.

LEVY

失败主义者

使习惯于

,Implementing “XY-chain”,This strategy is an extension of Y-wing. Therefore, it is not surprising that the two strategies share a significant amount of code.

背心

STANT

Generating Sudokus,To generate a valid Sudoku puzzle you have to go through the following two steps: generate a completed Sudoku and remove numbers from it in such a way that only one solution is possible with the clues that are left.