80.7M
positions
15.6M
practically solved
293.07T
engine nodes
2.2M
analyses
2,583
in queue
12
active workers
58
active cores
14.9M
nodes / sec
24.4
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.3% of tree positions solved · last 24h: 104,733 closures, 4.14T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 220 open obligations, of which 41 (18.6%) 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 1.0h (median of 3) · measured at 2026-10-10 17:00 UTC
Closures by source, last 24h (104683 of 104683 labelled): USER 100.0% (104653) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (30) · last 7d (1663704 of 1663752): USER 99.0% (1647566) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.1% (2115). 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 … Nxg4 9. Bxf4 Bh6 10. f4 Ke7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … Bxe5 10. O-O Nh6 11. Kh1 b6 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … Nxg4 9. Bxf4 Bh6 10. f4 Qc7 (User) · 128.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … Nxg4 9. Bxf4 Bh6 10. f4 Kf8 (User) · 128.0M nodes · RickEdinson-MSI-atomicdb
- 1. Nf3 f6 2. e4 e6 … Nh6 7. Ne5 fxe5 8. Qh5 g6 (User) · 512.0M nodes · Torom-torsten-pc-atomicdb#0
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 | 1109 | 2 | |
| g1h3 | unsolved | 821 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 387 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | -73 | 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 | BManBJ 32.3% of the fleet | 1.34T | 6,565 |
| 2 | Torom 31.9% of the fleet | 1.32T | 8,669 |
| 3 | randomchampgamer 16.1% of the fleet | 667.03B | 3,211 |
| 4 | RickEdinson 10.4% of the fleet | 432.32B | 2,014 |
| 5 | MoNiKaMaDnEsS 9.3% of the fleet | 383.23B | 1,671 |
| 6 | soothdest <0.1% of the fleet | 25.3M | 4 |
6 accounts · 4.14T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 30.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.5% of the fleet | 45.46T | 315,409 |
| 3 | tenzink 14.6% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.7% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.9% of the fleet | 17.41T | 126,028 |
| 6 | RickEdinson 3.9% of the fleet | 11.56T | 76,234 |
| 7 | JackIV 3.4% of the fleet | 10.06T | 67,859 |
| 8 | Torom 3.3% of the fleet | 9.75T | 71,467 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.3% of the fleet | 6.69T | 44,341 |
and 25 more.
35 accounts · 293.31T 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 · 17 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 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e6 9. Nc3 d5 10. O-O Bd6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rf8 15. Rxf8 b6 16. Qe7 Kc8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6 Kd8 14. Qe1 Rf8 15. Rxf8 b6 16. Qe7 Kc8 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. Qe1 Rf8 15. Rxf8 b6 16. Qe7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6 Kd8 14. Qe1 Rf8 15. Rxf8 b6 16. Qe7 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kd8 14. Qe1 Rf8 15. Rxf8 b6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6 Kd8 14. Qe1 Rf8 15. Rxf8 b6 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. Nxe6 Kd8 14. Qe1 Rf8 15. Rxf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6 Kd8 14. Qe1 Rf8 15. Rxf8 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … h5 13. Nxe6 Kd8 14. Qe1 Rf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6 Kd8 14. Qe1 Rf8 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. Nd8 h5 13. Nxe6 Kd8 14. Qe1
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6 Kd8 14. Qe1 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nf6 12. Nd8 h5 13. Nxe6 Kd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6 Kd8 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 13. Nxe6 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bd6 11. Bxc6 Nf6 12. Nd8 h5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 h5 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6 12. Nd8 - Oct 10 18:00 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … d5 10. O-O Bd6 11. Bxc6 Nf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bg4 7. f3 Nd7 8. fxg4 e6 9. Nc3 d5 10. O-O Bd6 11. Bxc6 Nf6