103.3M
positions
21.8M
practically solved
380.12T
engine nodes
2.8M
analyses
594
in queue
active workers
28
active cores
23.3M
nodes / sec
3.1
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.1% of tree positions solved · last 24h: 197,781 closures, 4.72T 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 4.8m (median of 109) · measured at 2026-10-29 21:00 UTC
Closures by source, last 24h (197781 of 197781 labelled): USER 96.9% (191687) · FILL 2.1% (4167) · AUTO 0.9% (1824) · SOLVE 0.0% (0) · NONE 0.1% (103) · last 7d (1826631 of 1826631): USER 98.6% (1800192) · FILL 0.5% (9638) · AUTO 0.9% (16257) · SOLVE 0.0% (0) · NONE 0.0% (544). 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 … e6 8. c4 Bd7 9. Nc3 b5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 d6 2. Ng5 f5 … e6 8. c4 Bd7 9. Nc3 Na6 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … e6 8. c4 Bd7 9. Nc3 a5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … e6 8. c4 Bd7 9. Nc3 d5 (User) · 512.0M nodes · BManBJ-Laptop-Blake-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 51.5% of the fleet | 2.43T | 15,075 |
| 2 | BManBJ 35.6% of the fleet | 1.68T | 5,641 |
| 3 | RickEdinson 10.1% of the fleet | 475.03B | 3,135 |
| 4 | MoNiKaMaDnEsS 2.9% of the fleet | 136.53B | 921 |
4 accounts · 4.72T 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 19.8% of the fleet | 75.10T | 517,214 |
| 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 | 20.31T | 133,181 |
| 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 · 380.18T 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 21:40 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Kf7 12. c5 d5 13. h3 h4
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bd4 21. Kd1 Bc3 22. Qf7 Kh8
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 19. Qg4 Nxd4 20. Qh5 Bd4 21. Kd1 Bc3 22. Qf7 Kh8 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 20. Qh5 Bd4 21. Kd1 Bc3 22. Qf7
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 19. Qg4 Nxd4 20. Qh5 Bd4 21. Kd1 Bc3 22. Qf7 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nxd4 20. Qh5 Bd4 21. Kd1 Bc3
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 19. Qg4 Nxd4 20. Qh5 Bd4 21. Kd1 Bc3 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 19. Qg4 Nxd4 20. Qh5 Bd4 21. Kd1
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 19. Qg4 Nxd4 20. Qh5 Bd4 21. Kd1 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … g5 19. Qg4 Nxd4 20. Qh5 Bd4
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 19. Qg4 Nxd4 20. Qh5 Bd4 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 18. Qf4 g5 19. Qg4 Nxd4 20. Qh5
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 19. Qg4 Nxd4 20. Qh5 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nb5 18. Qf4 g5 19. Qg4 Nxd4
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 19. Qg4 Nxd4 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Be3 Nb5 18. Qf4 g5 19. Qg4
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 19. Qg4 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bf6 17. Be3 Nb5 18. Qf4 g5
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 g5 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5 18. Qf4 - Oct 29 21:40 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kg8 16. Qf3 Bf6 17. Be3 Nb5
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 Na6 10. b4 Nc7 11. Nxh8 Kf7 12. c5 d5 13. h3 h4 14. Bh6 Be7 15. exf5 Kg8 16. Qf3 Bf6 17. Be3 Nb5