82.7M
positions
15.8M
practically solved
302.68T
engine nodes
2.3M
analyses
1,405
in queue
4
active workers
28
active cores
10.7M
nodes / sec
8.5
positions / min
85
proof number
4,552
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 75,889 closures, 3.81T 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 21.3m (median of 9) · measured at 2026-10-13 00:00 UTC
Closures by source, last 24h (75808 of 75808 labelled): USER 98.8% (74931) · FILL 0.3% (240) · AUTO 0.8% (598) · SOLVE 0.0% (0) · NONE 0.1% (39) · last 7d (1464018 of 1464018): USER 97.8% (1431238) · FILL 0.2% (2871) · AUTO 2.0% (29481) · SOLVE 0.0% (0) · NONE 0.0% (428). 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 … Be7 11. g5 Ng4 12. Rxg4 O-O (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … Na2 19. e5 d5 20. h4 Rb8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. Nc3 Nh6 … 11. g5 Ng4 12. Rxg4 O-O 13. bxa5 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … b5 16. Kh2 Nd5 17. g4 Nc3 (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 | 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 50.3% of the fleet | 1.91T | 13,472 |
| 2 | BManBJ 33.5% of the fleet | 1.27T | 7,797 |
| 3 | RickEdinson 11.4% of the fleet | 431.60B | 2,699 |
| 4 | MoNiKaMaDnEsS 4.7% of the fleet | 177.64B | 1,215 |
| 5 | randomchampgamer 0.2% of the fleet | 8.49B | 61 |
5 accounts · 3.80T 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 | 48.23T | 334,811 |
| 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 | 12.48T | 82,467 |
| 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 · 302.68T 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 13 00:07 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. e4 e6 … Be7 8. Nf7 Qa5 9. b4 Qd8
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … g5 16. Qh5 dxe4 17. Qg6 Kh8
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4 h6 15. Qh4 g5 16. Qh5 dxe4 17. Qg6 Kh8 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 15. Qh4 g5 16. Qh5 dxe4 17. Qg6
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4 h6 15. Qh4 g5 16. Qh5 dxe4 17. Qg6 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … h6 15. Qh4 g5 16. Qh5 dxe4
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4 h6 15. Qh4 g5 16. Qh5 dxe4 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 14. Qg4 h6 15. Qh4 g5 16. Qh5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4 h6 15. Qh4 g5 16. Qh5 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … d5 14. Qg4 h6 15. Qh4 g5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4 h6 15. Qh4 g5 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 13. Rxg4 d5 14. Qg4 h6 15. Qh4
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4 h6 15. Qh4 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Ng4 13. Rxg4 d5 14. Qg4 h6
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4 h6 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 14. Qg4 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … fxg4 12. Nxe7 Ng4 13. Rxg4 d5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 d5 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4 13. Rxg4 - Oct 13 00:07 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … O-O 11. Ng5 fxg4 12. Nxe7 Ng4
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Nc3 Nh6 5. g4 g6 6. Ng5 f5 7. Rg1 Be7 8. Nf7 Qa5 9. b4 Qd8 10. Nd5 O-O 11. Ng5 fxg4 12. Nxe7 Ng4