83.8M
positions
16.0M
practically solved
308.10T
engine nodes
2.3M
analyses
38
in queue
3
active workers
20
active cores
6.6M
nodes / sec
7.6
positions / min
85
proof number
4,538
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 111,600 closures, 2.03T 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 1.4m (median of 25) · measured at 2026-10-14 18:00 UTC
Closures by source, last 24h (111600 of 111600 labelled): USER 99.6% (111192) · FILL 0.2% (240) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.2% (168) · last 7d (1131499 of 1131499): USER 97.1% (1098212) · FILL 0.3% (3309) · AUTO 2.6% (29472) · SOLVE 0.0% (0) · NONE 0.0% (506). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nf3 f6 2. Nc3 Nh6 … 11. exd5 Qd5 12. Bd3 Nf5 13. Bb5 (User) · 128.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. Nh3 d5 2. Nc3 h6 … 10. O-O f6 11. Qe2 c6 12. Bf4 (User) · 512.0M 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 33.3% of the fleet | 676.18B | 2,784 |
| 2 | BManBJ 27.8% of the fleet | 564.54B | 3,145 |
| 3 | MoNiKaMaDnEsS 19.8% of the fleet | 402.03B | 2,276 |
| 4 | RickEdinson 19.1% of the fleet | 388.59B | 2,105 |
4 accounts · 2.03T 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 | 19.19T | 135,305 |
| 6 | Torom 5.1% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.3% of the fleet | 13.20T | 86,429 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.5% of the fleet | 7.70T | 51,366 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 308.15T 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 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … h5 15. Nb3 f5 16. Nc5 f4
1. Nf3 f6 2. e4 e6 3. Na3 c6 4. Nb5 cxb5 5. Bb5 Nc6 6. O-O g6 7. h3 a6 8. Kh1 axb5 9. Qe2 Qa5 10. Qc4 Qc5 11. a4 Qxc4 12. a5 g5 13. Nd4 Bb4 14. g3 h5 15. Nb3 f5 16. Nc5 f4 - Oct 14 18:51 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … e6 8. f3 g5 9. Nd5 Bd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 g5 9. Nd5 Bd7 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … g5 9. Nd5 Bd7 10. Nc7 Ke7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 g5 9. Nd5 Bd7 10. Nc7 Ke7 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 8. f3 g5 9. Nd5 Bd7 10. Nc7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 g5 9. Nd5 Bd7 10. Nc7 - Oct 14 18:51 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … e6 8. f3 g5 9. Nd5 Ng8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 g5 9. Nd5 Ng8 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nxf6 11. Qh5 Ke7 12. Qe8 Kf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 g5 9. f4 Na6 10. Nf6 Nxf6 11. Qh5 Ke7 12. Qe8 Kf6 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 10. Nf6 Nxf6 11. Qh5 Ke7 12. Qe8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 g5 9. f4 Na6 10. Nf6 Nxf6 11. Qh5 Ke7 12. Qe8 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Na6 10. Nf6 Nxf6 11. Qh5 Ke7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 g5 9. f4 Na6 10. Nf6 Nxf6 11. Qh5 Ke7 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 9. f4 Na6 10. Nf6 Nxf6 11. Qh5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 g5 9. f4 Na6 10. Nf6 Nxf6 11. Qh5 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … g5 9. f4 Na6 10. Nf6 Nxf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 g5 9. f4 Na6 10. Nf6 Nxf6 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 8. Nd5 g5 9. f4 Na6 10. Nf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 g5 9. f4 Na6 10. Nf6 - Oct 14 18:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e6 8. Nd5 g5 9. f4 Na6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 g5 9. f4 Na6