Book: 21 / 554
| # | move | proof | disproof |
|---|---|---|---|
| 1 | a4 | 12 | 21 |
| 2 | b4 | 12 | 21 |
| 3 | f4 | 12 | 21 |
| 4 | Rh2 | 12 | 21 |
| 5 | Qe2 | 12 | 21 |
| 6 | Ke2 | 12 | 21 |
| 7 | Nf3 | 10 | 21 |
| 8 | Na3 | 9 | 21 |
| 9 | Nc3 | 9 | 21 |
| 10 | Kf1 | 9 | 21 |
| 11 | d4 | 8 | 21 |
| 12 | g3 | 8 | 21 |
| 13 | Ne2 | 8 | 21 |
| 14 | d3 | 4 | 21 |
| 15 | Qh5 | 68 | 22 |
| 16 | Qa4 | 68 | 22 |
| 17 | Qf3 | 57 | 22 |
| 18 | Qb3 | 50 | 22 |
| 19 | Qc2 | 25 | 22 |
| 20 | e4 | 16 | 22 |
| 21 | f3 | 15 | 22 |
| 22 | b3 | 15 | 22 |
| 23 | a3 | 15 | 22 |
| 24 | c5 | 15 | 22 |
| 25 | Qg4 | 53 | 23 |
| 26 | g4 | 16 | 23 |
| 27 | h4 | 4 | 27 |