103.3M
positions
21.8M
practically solved
380.03T
engine nodes
2.8M
analyses
729
in queue
active workers
28
active cores
23.3M
nodes / sec
7.0
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.1% of tree positions solved · last 24h: 198,190 closures, 4.95T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 200 open obligations, of which 36 (18.0%) sit at or below dn 2, one unanswered question from falling over · 0 open nodes on impossible numbers · positions a visitor asked for close in 3.5m (median of 79) · measured at 2026-10-29 20:00 UTC
Closures by source, last 24h (198190 of 198190 labelled): USER 96.9% (192091) · FILL 2.1% (4167) · AUTO 0.9% (1824) · SOLVE 0.0% (0) · NONE 0.1% (108) · last 7d (1860759 of 1860759): USER 98.6% (1834319) · FILL 0.5% (9638) · AUTO 0.9% (16257) · SOLVE 0.0% (0) · NONE 0.0% (545). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing all workers
- 1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 a4 13. Nc3 b6 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 a4 13. Nc3 c5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 a4 13. Nc3 e5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 a4 13. Nc3 d5 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. Nc3 c6 … Kb8 18. a3 Ka8 19. h5 Ne5 (User) · 128.0M nodes · RickEdinson-MSI-atomicdb
Play to explore drag a piece or click two squares
Keyboard move list
First moves from the starting position
| move | state | eval | visits | |
|---|---|---|---|---|
| g1f3 | unsolved | 1204 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 469 | 3 | |
| d2d4 | unsolved | 405 | 2 | |
| e2e4 | unsolved | 401 | 2 | |
| b1c3 | unsolved | 141 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | -59 | 3 | |
| h2h3 | unsolved | -97 | 2 | |
| d2d3 | unsolved | -98 | 2 | |
| a2a3 | unsolved | -100 | 2 | |
| f2f3 | unsolved | -117 | 3 | |
| b2b3 | unsolved | -144 | 1 | |
| f2f4 | unsolved | -260 | 3 | |
| h2h4 | unsolved | -500 | 2 | |
| a2a4 | unsolved | -514 | 2 | |
| g2g4 | unsolved | -604 | 2 | |
| c2c4 | unsolved | -700 | 3 |
Contributors by engine nodes
Every position in this tree was searched by somebody's machine. Ties share a place, and the share is measured against everything the whole fleet searched in that window.
Last 24 hours
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | Torom 53.7% of the fleet | 2.66T | 16,694 |
| 2 | BManBJ 33.9% of the fleet | 1.68T | 5,641 |
| 3 | RickEdinson 9.6% of the fleet | 475.28B | 3,112 |
| 4 | MoNiKaMaDnEsS 2.8% of the fleet | 136.53B | 921 |
4 accounts · 4.95T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 19.7% of the fleet | 75.03T | 516,972 |
| 3 | Torom 13.3% of the fleet | 50.55T | 363,522 |
| 4 | tenzink 11.3% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.3% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.3% of the fleet | 20.29T | 133,030 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.1% of the fleet | 11.85T | 81,529 |
| 9 | JackIV 2.6% of the fleet | 10.06T | 67,859 |
| 10 | gannet 1.9% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 380.08T nodes searched by the whole fleet.
Proposed campaigns
Anyone can put a line up and vote for it. The site owner decides which one the solver actually runs.
- Should be easiest proof for nf3 e51. Nf3 e5 2. e4proposed by quasa · 18 votes
- Pls nh4 is more solvable than c31. Nf3 f6 2. e4 e6 3. Nc3 c6 4. Nb5 cxb5 5. Bb5 Nc6 6. d4 g6 7. Nh4proposed by 67king · 6 votes
- Is Nh3 h6 e3 e6 Nc3 a draw?1. Nh3 e6 2. e3 h6 3. Nc3proposed by soothdest · 5 votes
- The weaker of the two f-pawn advances for 1. ...d61. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4proposed by MoNiKaMaDnEsS · 4 votes
- Refuting 1... d61. Nf3 d6 2. Nc3proposed by randomchampgamer · 3 votes
- Let's solve Qc8 in 2N Nh6 mainline and/or use it as a benchmark1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Bg4 11. Bh3 Qc8 12. Bh6proposed by soothdest · 3 votes
Showing the 6 most voted of 23 proposals · see every proposal
Milestones
- Oct 29 20:33 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 a4 13. Nc3 Nc5
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Re8 24. Qc7 Re7 25. Bxe7 Kf8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 22. Qd6 Re7 23. Qb8 Re8 24. Qc7 Re7 25. Bxe7 Kf8 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 23. Qb8 Re8 24. Qc7 Re7 25. Bxe7
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 22. Qd6 Re7 23. Qb8 Re8 24. Qc7 Re7 25. Bxe7 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Re7 23. Qb8 Re8 24. Qc7 Re7
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 22. Qd6 Re7 23. Qb8 Re8 24. Qc7 Re7 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 22. Qd6 Re7 23. Qb8 Re8 24. Qc7
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 22. Qd6 Re7 23. Qb8 Re8 24. Qc7 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Re8 22. Qd6 Re7 23. Qb8 Re8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 22. Qd6 Re7 23. Qb8 Re8 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 21. cxd6 Re8 22. Qd6 Re7 23. Qb8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 22. Qd6 Re7 23. Qb8 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kg8 21. cxd6 Re8 22. Qd6 Re7
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 22. Qd6 Re7 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 20. c5 Kg8 21. cxd6 Re8 22. Qd6
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 22. Qd6 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kf8 20. c5 Kg8 21. cxd6 Re8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 Re8 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 19. h3 Kf8 20. c5 Kg8 21. cxd6
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8 21. cxd6 - Oct 29 20:33 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bd6 19. h3 Kf8 20. c5 Kg8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 g6 8. Bg5 e6 9. c4 Bh6 10. Nxh8 a5 11. O-O Na6 12. a3 a4 13. Nc3 Nc5 14. dxc5 Bd7 15. e5 Bg7 16. Bf6 Bf8 17. exd6 Bc5 18. Kh1 Bd6 19. h3 Kf8 20. c5 Kg8