106.2M
positions
22.5M
practically solved
395.03T
engine nodes
2.9M
analyses
5,339
in queue
active workers
132
active cores
150.3M
nodes / sec
64.2
positions / min
120
proof number
4,002
disproof number
Root conquest: 0/20 first moves solved · 21.2% of tree positions solved · last 24h: 238,402 closures, 8.88T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 72 over 199 open obligations, of which 36 (18.1%) 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 3.4h (median of 48) · measured at 2026-11-02 07:00 UTC
Closures by source, last 24h (238402 of 238402 labelled): USER 98.2% (234135) · FILL 1.4% (3304) · AUTO 0.4% (890) · SOLVE 0.0% (0) · NONE 0.0% (73) · last 7d (1272728 of 1272728): USER 98.1% (1249035) · FILL 0.8% (10274) · AUTO 1.0% (12927) · SOLVE 0.0% (0) · NONE 0.0% (492). 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. e4 d6 2. Nh3 f5 … b4 12. Nc3 Rb8 13. Kh1 f3 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. e4 d6 2. Nh3 f5 … b4 12. Nc3 Rb8 13. Kh1 e5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. e4 d6 2. Nh3 f5 … b4 12. Nc3 Rb8 13. Kh1 b3 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. e4 d6 2. Nh3 f5 … b4 12. Nc3 Rb8 13. Kh1 h4 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. c3 e6 2. e3 Nh6 … 11. Nxh7 Nc6 12. h3 Nh2 13. Bxc6 (User) · 128.0M nodes · foxglove
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 | 996 | 2 | |
| g1h3 | unsolved | 748 | 2 | |
| d2d4 | unsolved | 443 | 2 | |
| e2e3 | unsolved | 437 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| b1c3 | unsolved | 142 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 3 | |
| 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 | 3 | |
| a2a4 | unsolved | -514 | 2 | |
| g2g4 | unsolved | -604 | 3 | |
| 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 | gannet 41.0% of the fleet | 3.65T | 26,046 |
| 2 | Torom 31.8% of the fleet | 2.83T | 20,895 |
| 3 | BManBJ 18.7% of the fleet | 1.66T | 6,897 |
| 4 | RickEdinson 5.0% of the fleet | 442.74B | 2,937 |
| 5 | MoNiKaMaDnEsS 3.0% of the fleet | 267.07B | 1,862 |
| 6 | soothdest 0.5% of the fleet | 45.48B | 271 |
6 accounts · 8.88T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 22.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.4% of the fleet | 80.72T | 539,644 |
| 3 | Torom 13.5% of the fleet | 53.37T | 384,415 |
| 4 | tenzink 10.8% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 7.9% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 21.80T | 142,993 |
| 7 | randomchampgamer 5.0% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.2% of the fleet | 12.81T | 88,602 |
| 9 | gannet 2.9% of the fleet | 11.44T | 77,008 |
| 10 | JackIV 2.5% of the fleet | 10.06T | 67,859 |
and 25 more.
35 accounts · 395.32T 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
- Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … e6 11. d6 Nf6 12. Bh6 a6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Bb5 Nc6 7. Ng5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Nf6 12. Bh6 a6 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … e6 11. d6 Nf6 12. Bh6 g5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Bb5 Nc6 7. Ng5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Nf6 12. Bh6 g5 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … e6 11. d6 Nf6 12. Bh6 e5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Bb5 Nc6 7. Ng5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Nf6 12. Bh6 e5 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Nf6 13. d7 Ke7 14. Qd6 Kf7
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Bb5 Nc6 7. Ng5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Bg7 12. Bh6 Nf6 13. d7 Ke7 14. Qd6 Kf7 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 12. Bh6 Nf6 13. d7 Ke7 14. Qd6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Bb5 Nc6 7. Ng5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Bg7 12. Bh6 Nf6 13. d7 Ke7 14. Qd6 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Bg7 12. Bh6 Nf6 13. d7 Ke7
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Bb5 Nc6 7. Ng5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Bg7 12. Bh6 Nf6 13. d7 Ke7 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 11. d6 Bg7 12. Bh6 Nf6 13. d7
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Bb5 Nc6 7. Ng5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Bg7 12. Bh6 Nf6 13. d7 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … e6 11. d6 Bg7 12. Bh6 Nf6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Bb5 Nc6 7. Ng5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Bg7 12. Bh6 Nf6 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
… h5 Bh6 Rxh6 gxh5 Qe7 Nxf6 b6 e3 Bg4 Qb1 Bf5 Rh8 Ke7 Re8 Kf7 Ng5 Kg7 Rg8 Kh6 Rg6 Kh5 Rh6 Kg4
… h5 Bh6 Rxh6 gxh5 Qe7 Nxf6 b6 e3 Bg4 Qb1 Bf5 Rh8 Ke7 Re8 Kf7 Ng5 Kg7 Rg8 Kh6 Rg6 Kh5 Rh6 Kg4 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
… h5 Bh6 Rxh6 gxh5 Qe7 Nxf6 b6 e3 Bg4 Qb1 Bf5 Rh8 Ke7 Re8 Kf7 Ng5 Kg7 Rg8 Kh6 Rg6 Kh5 Rh6
… h5 Bh6 Rxh6 gxh5 Qe7 Nxf6 b6 e3 Bg4 Qb1 Bf5 Rh8 Ke7 Re8 Kf7 Ng5 Kg7 Rg8 Kh6 Rg6 Kh5 Rh6 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
… h5 Bh6 Rxh6 gxh5 Qe7 Nxf6 b6 e3 Bg4 Qb1 Bf5 Rh8 Ke7 Re8 Kf7 Ng5 Kg7 Rg8 Kh6 Rg6 Kh5
… h5 Bh6 Rxh6 gxh5 Qe7 Nxf6 b6 e3 Bg4 Qb1 Bf5 Rh8 Ke7 Re8 Kf7 Ng5 Kg7 Rg8 Kh6 Rg6 Kh5 - Nov 02 07:41 Solved: WHITE_WIN via MATE_PVview
… h5 Bh6 Rxh6 gxh5 Qe7 Nxf6 b6 e3 Bg4 Qb1 Bf5 Rh8 Ke7 Re8 Kf7 Ng5 Kg7 Rg8 Kh6 Rg6
… h5 Bh6 Rxh6 gxh5 Qe7 Nxf6 b6 e3 Bg4 Qb1 Bf5 Rh8 Ke7 Re8 Kf7 Ng5 Kg7 Rg8 Kh6 Rg6