83.8M
positions
16.0M
practically solved
308.03T
engine nodes
2.3M
analyses
6
in queue
3
active workers
20
active cores
0
nodes / sec
6.1
positions / min
85
proof number
4,551
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 109,470 closures, 2.06T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 217 open obligations, of which 41 (18.9%) 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 14.9m (median of 6) · measured at 2026-10-14 17:00 UTC
Closures by source, last 24h (109470 of 109470 labelled): USER 99.6% (109068) · FILL 0.2% (237) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.2% (165) · last 7d (1141361 of 1141361): USER 97.1% (1108072) · FILL 0.3% (3306) · AUTO 2.6% (29472) · SOLVE 0.0% (0) · NONE 0.0% (511). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nh3 d5 2. Nc3 h6 … 12. Bxf4 Ngf6 13. a4 O-O 14. Ng5 (User) · 512.0M nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … f5 7. h5 Nxg4 8. Bg5 Qa5 (User) · 128.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … 7. h5 Nxg4 8. Bg5 Qa5 9. Be7 (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 | 1134 | 2 | |
| g1h3 | unsolved | 703 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 395 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -65 | 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 | randomchampgamer 32.8% of the fleet | 676.24B | 2,781 |
| 2 | BManBJ 30.0% of the fleet | 617.81B | 3,497 |
| 3 | RickEdinson 18.7% of the fleet | 384.59B | 2,131 |
| 4 | MoNiKaMaDnEsS 18.5% of the fleet | 381.12B | 2,152 |
4 accounts · 2.06T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.3% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.2% of the fleet | 49.94T | 344,541 |
| 3 | tenzink 13.9% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.2% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.2% of the fleet | 19.17T | 135,162 |
| 6 | Torom 5.1% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.3% of the fleet | 13.18T | 86,375 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.5% of the fleet | 7.68T | 51,242 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 308.09T 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 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … f5 7. h5 Nxg4 8. Bg5 Qxg5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qxg5 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Ke7 17. Qg2 e4 18. Qg7 Kd6
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 15. exd5 e5 16. Bd7 Ke7 17. Qg2 e4 18. Qg7 Kd6 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 16. Bd7 Ke7 17. Qg2 e4 18. Qg7
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 15. exd5 e5 16. Bd7 Ke7 17. Qg2 e4 18. Qg7 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … e5 16. Bd7 Ke7 17. Qg2 e4
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 15. exd5 e5 16. Bd7 Ke7 17. Qg2 e4 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 15. exd5 e5 16. Bd7 Ke7 17. Qg2
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 15. exd5 e5 16. Bd7 Ke7 17. Qg2 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Ne5 15. exd5 e5 16. Bd7 Ke7
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 15. exd5 e5 16. Bd7 Ke7 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 14. f3 Ne5 15. exd5 e5 16. Bd7
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 15. exd5 e5 16. Bd7 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Nd7 14. f3 Ne5 15. exd5 e5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 15. exd5 e5 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 13. Bh3 Nd7 14. f3 Ne5 15. exd5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 15. exd5 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … f4 13. Bh3 Nd7 14. f3 Ne5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 Ne5 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 12. Qd2 f4 13. Bh3 Nd7 14. f3
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7 14. f3 - Oct 14 17:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … d5 12. Qd2 f4 13. Bh3 Nd7
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. h4 f5 7. h5 Nxg4 8. Bg5 Qf6 9. hxg6 h5 10. Rg1 Bg7 11. Rxg7 d5 12. Qd2 f4 13. Bh3 Nd7