Home > Neutreeko > Puzzles > Hard 4001-4250
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. c4-a2, | 6. d1-a4, | 7. b5-b1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. c4-a2, | 6. a5-a4, | 7. b5-b1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-c1, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-c1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-a4, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-a4, | 7. a3-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-a4, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-d4, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-d4, | 7. a3-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-e1, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-e1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-e2, | 7. a3-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d1-e2, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. a5-a4, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. a5-e1, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. a5-e1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. a5-c5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. a5-c5, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-b5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-b5, | 7. b1-b4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-b5, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-b5, | 7. c4-a4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-b5, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-d2, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-e4, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-e4, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-e4, | 7. c4-a4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-e4, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-e5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-b1, | 6. d5-e5, | 7. c4-a4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d1-a1, | 7. a3-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d1-d4, | 7. a3-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d1-e1, | 7. a3-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d1-e2, | 7. a3-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. a5-e1, | 7. a3-a5 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. a5-e1, | 7. a3-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. a5-e1, | 7. c5-b4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. a5-b5, | 7. a3-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d5-d2, | 7. c5-b4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d5-e4, | 7. a3-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d5-e4, | 7. c5-b4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d5-e5, | 7. a3-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-d1, | 5. b5-c5, | 6. d5-e5, | 7. c5-b4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. e1-c1, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. e1-c1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. e1-a5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. e1-a5, | 7. a3-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. e1-a5, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. e1-e5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. e1-e5, | 7. a3-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. a4-a5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. a4-a5, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. a4-d1, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. a4-d1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. a4-b4, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. a4-b4, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. a4-b5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. a4-b5, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-a5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-a5, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-a5, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-d1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-d1, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-e4, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-e4, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-e4, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a5-e1, | 5. b5-b1, | 6. d5-e5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-c5, | 5. c4-a2, | 6. a5-e1, | 7. b5-b1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-c5, | 5. c4-a2, | 6. c5-b4, | 7. b5-e5 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-c5, | 5. c4-a2, | 6. c5-c1, | 7. b5-b1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-c5, | 5. c4-a2, | 6. c5-e3, | 7. b5-b1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-c5, | 5. c4-a2, | 6. c5-e3, | 7. b5-e5 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-c5, | 5. c4-a2, | 6. c5-e5, | 7. a2-d5 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. c4-a2, | 6. e4-b1, | 7. a3-c5 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. c4-a2, | 6. e4-b4, | 7. b5-e5 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. c4-a2, | 6. e4-d5, | 7. b5-b1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. c4-a2, | 6. e4-e1, | 7. a3-c5 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. c4-a2, | 6. e4-e1, | 7. b5-b1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. c4-a2, | 6. e4-e5, | 7. a2-d5 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. c4-a2, | 6. a5-e1, | 7. b5-b1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-d1, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-d1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-d1, | 7. c4-a4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-d1, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-b4, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-b4, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-b4, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-b5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-b5, | 7. b1-b4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-b5, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-b5, | 7. c4-a4 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a4-b5, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-c2, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-d4, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-d4, | 7. a3-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-d5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-d5, | 7. a3-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-d5, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-e1, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-e1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-e1, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-e5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. e4-e5, | 7. a3-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a5-e1, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a5-e1, | 7. c4-a2 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a5-e1, | 7. c4-c1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e4, | 5. b5-b1, | 6. a5-e5, | 7. b1-a1 |
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. a4-b4?, | 5. b5-a4 | ||
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-d1?, | 5. c4-d5 | ||
| 1. b1-b5, | 2. d2-d5, | 3. c5-a3, | 4. d5-e5?, | 5. c4-d5 | ||
| --- | ||||||
| 1. c4-a2?, | 2. d2-b4 | (black wins in 13 moves) | ||||
| 1. c4-a2?, | 2. a5-c3 | (black wins in 13 moves) | ||||
| 1. c4-c1?, | 2. a5-c3 | (black wins in 19 moves) | ||||
| 1. c4-b4?, | 2. d2-c1 | (black wins in 37 moves) | ||||