魔王谜题
Easter Monster
11.0SE 等级
By The Hardest Sudoku Team · Last updated
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谜题按发布时的原样呈现（21 个已知数）。不展示答案。
- SE 等级
- 11.0
- 作者
- JPF (forum.enjoysudoku.com)
- 年份
- 2007
起源与传说
Easter Monster is one of the most famous symmetric monsters, posted around Easter 2007. Its striking diagonal clue pattern made it a touchstone puzzle and spurred research into specialized techniques (Naked/Hidden Double Loops, the 'SK Loop') that exploit its structure. It remains a classic example of high-SE-grade difficulty.
来源：SudokuSnake.com (Easter Monster); forum.enjoysudoku.com (Easter Monster thread).
这道怪物题是如何解开的
完全用逻辑解开需要 94 步。 开局是Forcing Chain，无需猜测就能落下第一手。
其中最难的一步是Forcing Chain，这决定了它的难度。
| 技巧 | 步数 |
|---|---|
| Naked Single | 52 |
| Hidden Single | 8 |
| Claiming (Locked Candidates) | 1 |
| Pointing (Locked Candidates) | 3 |
| Naked Pair | 5 |
| Forcing Chain | 25 |
仅显示技巧与次数——不涉及格子、数字或任何答案信息。
查看完整技巧阶梯