3...6...5
.2.....4.
..7...2..
...6.7...
9...8...6
...9.1...
..2...7..
.4.....1.
6...5...9
這題如不靠暴力搜尋，軟體用的技巧不夠多的話，
會解不出來。
此題使用以下技巧
Analysis results
Difficulty rating: 8.8
This Sudoku can be solved using the following logical methods:
58 x Hidden Single
1 x Direct Hidden Pair
9 x Pointing
1 x Claiming
4 x Naked Pair
3 x Hidden Pair
2 x Swordfish
1 x XY-Wing
1 x XYZ-Wing
1 x Unique Rectangle type 1
1 x Jellyfish
2 x Turbot Fish
12 x Forcing Chain
9 x Region Forcing Chains
1 x Dynamic Region Forcing Chains
有興趣挑戰難題的可以試試。
保證只有唯一解。
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