59.4M
positions
10.0M
practically solved
213.87T
engine nodes
1.7M
analyses
6,932
in queue
13
active workers
89
active cores
24.0M
nodes / sec
30.8
positions / min
131
proof number
3,777
disproof number
Root conquest: 0/20 first moves solved · 16.8% of tree positions solved · last 24h: 523,231 closures, 5.67T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 79 over 169 open obligations, of which 28 (16.6%) 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 15.7m (median of 129) · measured at 2026-09-20 06:00 UTC
Closures by source, last 24h (523165 of 523165 labelled): USER 99.9% (522730) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.1% (435) · last 7d (2289344 of 2289410): USER 98.9% (2264859) · FILL 0.1% (2970) · AUTO 0.8% (17755) · SOLVE 0.0% (0) · NONE 0.2% (3760). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nh3 f5 2. e3 e6 … 9. Bxc6 Be7 10. b4 Rac8 11. c4 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nh3 f5 2. e3 e6 … Be7 10. b4 Bh4 11. g3 Bxg3 (User) · 512.0M nodes · auranvesdranor-j-002-atomicdb
- 1. Nh3 f5 2. e3 e6 … Be7 10. b4 Bh4 11. g3 Rac8 (User) · 512.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Nb4 12. Qf3 Bh6 13. Nxa7 h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Nb4 12. Qf3 Bh6 13. Nxa7 c5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
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 | 1031 | 2 | |
| g1h3 | unsolved | 717 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 435 | 2 | |
| e2e4 | unsolved | 417 | 2 | |
| b1c3 | unsolved | 72 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | 0 | 3 | |
| b1a3 | unsolved | 0 | 3 | |
| h2h3 | unsolved | -100 | 2 | |
| a2a3 | unsolved | -103 | 2 | |
| f2f3 | unsolved | -110 | 2 | |
| d2d3 | unsolved | -116 | 2 | |
| b2b3 | unsolved | -119 | 1 | |
| f2f4 | unsolved | -223 | 3 | |
| h2h4 | unsolved | -500 | 2 | |
| a2a4 | unsolved | -502 | 2 | |
| g2g4 | unsolved | -600 | 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 | BManBJ 27.2% of the fleet | 1.54T | 11,379 |
| 2 | auranvesdranor 22.1% of the fleet | 1.25T | 9,596 |
| 3 | JackIV 17.9% of the fleet | 1.01T | 4,609 |
| 4 | tenzink 10.7% of the fleet | 605.29B | 4,195 |
| 5 | Torom 9.6% of the fleet | 544.42B | 3,773 |
| 6 | randomchampgamer 9.1% of the fleet | 517.56B | 4,188 |
| 7 | quasa 1.7% of the fleet | 95.04B | 709 |
| 8 | MoNiKaMaDnEsS 1.6% of the fleet | 90.23B | 662 |
| 9 | soothdest 0.2% of the fleet | 10.29B | 79 |
| 10 | NeoArcturus <0.1% of the fleet | 640.0M | 5 |
10 accounts · 5.67T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 37.2% of the fleet | 79.65T | 677,611 |
| 2 | tenzink 16.3% of the fleet | 34.85T | 295,196 |
| 3 | auranvesdranor 11.4% of the fleet | 24.32T | 175,250 |
| 4 | BManBJ 11.2% of the fleet | 23.93T | 163,309 |
| 5 | JackIV 4.5% of the fleet | 9.60T | 64,737 |
| 6 | randomchampgamer 3.8% of the fleet | 8.05T | 58,041 |
| 7 | RickEdinson 3.0% of the fleet | 6.32T | 41,667 |
| 8 | NeoArcturus 1.9% of the fleet | 4.09T | 16,756 |
| 9 | MoNiKaMaDnEsS 1.8% of the fleet | 3.93T | 25,039 |
| 10 | ijh 1.7% of the fleet | 3.57T | 37,348 |
and 22 more.
32 accounts · 213.98T 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 · 16 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
- Refuting 1... d61. Nf3 d6 2. Nc3proposed by randomchampgamer · 3 votes
- The weaker of the two f-pawn advances for 1. ...d61. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4proposed by MoNiKaMaDnEsS · 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
- Is Nh3 h6 e3 e6 Nc3 a draw?1. Nh3 e6 2. e3 h6 3. Nc3proposed by soothdest · 3 votes
Showing the 6 most voted of 19 proposals · see every proposal
Milestones
- Sep 20 06:36 Solved: WHITE_WIN via MINIMAXview
1. Nh3 f6 2. Nc3 e6 … Nc6 13. h4 a5 14. Bh3 a4
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … Ne5 19. dxe5 Kf7 20. Be8 Kg7
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5 dxe5 18. Qe2 Ne5 19. dxe5 Kf7 20. Be8 Kg7 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … 18. Qe2 Ne5 19. dxe5 Kf7 20. Be8
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5 dxe5 18. Qe2 Ne5 19. dxe5 Kf7 20. Be8 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … dxe5 18. Qe2 Ne5 19. dxe5 Kf7
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5 dxe5 18. Qe2 Ne5 19. dxe5 Kf7 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … 17. e5 dxe5 18. Qe2 Ne5 19. dxe5
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5 dxe5 18. Qe2 Ne5 19. dxe5 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … Ke7 17. e5 dxe5 18. Qe2 Ne5
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5 dxe5 18. Qe2 Ne5 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … 16. Bd7 Ke7 17. e5 dxe5 18. Qe2
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5 dxe5 18. Qe2 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … Bxe6 16. Bd7 Ke7 17. e5 dxe5
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5 dxe5 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 17. e5 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … a4 15. Ne6 Bxe6 16. Bd7 Ke7
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 Ke7 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6 16. Bd7 - Sep 20 06:36 Solved: WHITE_WIN via MATE_PVview
1. Nh3 f6 2. Nc3 e6 … a5 14. Bh3 a4 15. Ne6 Bxe6
1. Nh3 f6 2. Nc3 e6 3. d4 h6 4. Bg5 b5 5. Bf4 d6 6. Nd5 exd5 7. c3 c5 8. e4 Bg4 9. f3 c4 10. Bc1 g6 11. Nf4 h5 12. g3 Nc6 13. h4 a5 14. Bh3 a4 15. Ne6 Bxe6