82.7M
positions
15.8M
practically solved
302.53T
engine nodes
2.3M
analyses
175
in queue
4
active workers
28
active cores
0
nodes / sec
7.7
positions / min
85
proof number
4,552
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 82,568 closures, 4.12T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 218 open obligations, of which 41 (18.8%) 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 1.4h (median of 6) · measured at 2026-10-12 22:00 UTC
Closures by source, last 24h (82568 of 82568 labelled): USER 98.9% (81692) · FILL 0.3% (240) · AUTO 0.7% (598) · SOLVE 0.0% (0) · NONE 0.0% (38) · last 7d (1466488 of 1466488): USER 97.8% (1433641) · FILL 0.2% (2936) · AUTO 2.0% (29481) · SOLVE 0.0% (0) · NONE 0.0% (430). 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. e4 e6 … 16. g4 d5 17. h4 e5 18. d4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … d5 16. g4 b4 17. g5 Ne8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. e4 e6 … b5 16. g4 d5 17. h4 Ne8 (User) · 128.0M nodes · BManBJ-Laptop-Blake-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 | 1128 | 2 | |
| g1h3 | unsolved | 753 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 393 | 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 | Torom 52.8% of the fleet | 2.18T | 15,425 |
| 2 | BManBJ 31.2% of the fleet | 1.28T | 7,821 |
| 3 | RickEdinson 10.6% of the fleet | 434.62B | 2,720 |
| 4 | MoNiKaMaDnEsS 4.3% of the fleet | 177.64B | 1,215 |
| 5 | randomchampgamer 1.1% of the fleet | 46.64B | 319 |
5 accounts · 4.12T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.9% of the fleet | 48.15T | 334,253 |
| 3 | tenzink 14.2% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.4% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.0% of the fleet | 18.16T | 130,741 |
| 6 | Torom 4.8% of the fleet | 14.40T | 104,848 |
| 7 | RickEdinson 4.1% of the fleet | 12.46T | 82,320 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | gannet 2.4% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.3% of the fleet | 6.98T | 47,246 |
and 25 more.
35 accounts · 302.58T 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 12 22:47 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … d5 9. Ne6 c6 10. Bb5 c5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Na6 6. Bg5 Nf6 7. Nd8 g6 8. Bc4 d5 9. Ne6 c6 10. Bb5 c5 - Oct 12 22:47 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … d5 9. Ne6 c6 10. Bb5 h4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Na6 6. Bg5 Nf6 7. Nd8 g6 8. Bc4 d5 9. Ne6 c6 10. Bb5 h4 - Oct 12 22:47 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … d5 9. Ne6 c6 10. Bb5 f4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Na6 6. Bg5 Nf6 7. Nd8 g6 8. Bc4 d5 9. Ne6 c6 10. Bb5 f4 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rb8 13. Qg5 Kg8 14. Qf6 Be7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Rb8 13. Qg5 Kg8 14. Qf6 Be7 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. Qd2 Rb8 13. Qg5 Kg8 14. Qf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Rb8 13. Qg5 Kg8 14. Qf6 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kf7 12. Qd2 Rb8 13. Qg5 Kg8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Rb8 13. Qg5 Kg8 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 11. O-O Kf7 12. Qd2 Rb8 13. Qg5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Rb8 13. Qg5 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e5 11. O-O Kf7 12. Qd2 Rb8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Rb8 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bh6 14. Qe7 Bf4 15. dxe5 fxe4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Kg8 13. Qg5 Bh6 14. Qe7 Bf4 15. dxe5 fxe4 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. Qg5 Bh6 14. Qe7 Bf4 15. dxe5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Kg8 13. Qg5 Bh6 14. Qe7 Bf4 15. dxe5 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kg8 13. Qg5 Bh6 14. Qe7 Bf4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Kg8 13. Qg5 Bh6 14. Qe7 Bf4 - Oct 12 22:42 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. Qd2 Kg8 13. Qg5 Bh6 14. Qe7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. Bb5 Qxb5 6. d4 g6 7. Nxh8 b6 8. Bg5 e6 9. Bd8 Na6 10. b4 e5 11. O-O Kf7 12. Qd2 Kg8 13. Qg5 Bh6 14. Qe7