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This problem stumped me for some time until I realized with an 'ah ha!' the proper approach. Take your time before making the first move!
| Author |
InExtremis
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| Difficulty | 7 dan (history) | ||
| AVG solve time | 45 sec | ||
| User attempts | 171 / 1278 | ||
| Genre | life and death ⓒ | ||
| Similar problems | |||
| Created | 2005-05-02 | ||
| Source | A Chinese book | ||
| Stars | 5 (1 votes) | ||
| Collections | |||
| Your attempts | N/A | ||