From the problem cellar
The problem cellar
The engine found each position below, and a search through every defence then confirmed it: a single first move forces the stated result and no other move does. Play it out on the board; the defender always picks its most stubborn reply.
| Table | Easy | Medium | Hard |
|---|---|---|---|
| Nine men's morris | 14 | 13 | 13 |
| Six men's morris | 8 | 8 | 8 |
| Twelve men's morris | 8 | 8 | 8 |
| Draughts | 10 | 10 | 10 |
| Reversi | 10 | 10 | 10 |
| Four in a row | 10 | 10 | 10 |
| Five in a row | 10 | 10 | 10 |
| Dots and boxes | 10 | 10 | 10 |
238 problems