Explanation
Open the explanation (shows the answer)
The answer is e7. With best play to the end: ±0 (a draw).
Best line: e7 f6 f7 c8 d8 h5 h6 f8 g7 g8
Other moves
| Move | Result | Why |
|---|---|---|
| f7 | -8 (a loss by 8) | The opponent's best answer is e7 (then f6 g7 h6). |
| d8 | -10 (a loss by 10) | The opponent's best answer is c8 (then e7 f8 f6). |
| f6 | -10 (a loss by 10) | The opponent's best answer is d8 (then c8 g7 h5). |
| h6 | -14 (a loss by 14) | The opponent's best answer is h5 (then e7 f6 g7). |
| h5 | -26 (a loss by 26) | The opponent's best answer is d8 (then f6 c8 pass). |
About these puzzles
Each position comes from a real game. The engine solved it to the end (perfect play by both sides) and only positions with a single best move, clearly better than the second-best move, were kept. "Best play wins by N" is the final disc margin when both sides play perfectly.
If you play a different move, you see the final margin your move leads to with perfect play afterwards, and how much it gave up. Results are stored only in this browser.
To be graded during a full game, go to the Reversi dojo.