79.2M
positions
15.2M
practically solved
286.05T
engine nodes
2.2M
analyses
6,947
in queue
6
active workers
34
active cores
14.3M
nodes / sec
12.9
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 271,445 closures, 5.27T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 69 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 1.0h (median of 96) · measured at 2026-10-09 00:00 UTC
Closures by source, last 24h (271445 of 271445 labelled): USER 95.1% (258198) · FILL 0.5% (1232) · AUTO 4.4% (11927) · SOLVE 0.0% (0) · NONE 0.0% (88) · last 7d (1756329 of 1756329): USER 99.0% (1738538) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.2% (3768). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nf3 d6 2. Ng5 f6 … Rb8 10. Qa4 b5 11. Qa5 h5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. d4 Na6 3. e4 e6 4. Bxa6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Kf7 11. Nxb5 d5 12. O-O Bd7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … 28. Rc1 Ba4 29. b3 Bd7 30. a3 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f6 … Rb8 10. Qa4 b5 11. Qa5 g5 (User) · 128.0M nodes · randomchampgamer-2026PC-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 | 1044 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 364 | 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 47.0% of the fleet | 2.48T | 19,792 |
| 2 | BManBJ 28.5% of the fleet | 1.50T | 10,523 |
| 3 | randomchampgamer 12.5% of the fleet | 660.49B | 4,643 |
| 4 | RickEdinson 8.2% of the fleet | 434.00B | 2,903 |
| 5 | MoNiKaMaDnEsS 3.7% of the fleet | 193.30B | 1,673 |
| 6 | soothdest 0.1% of the fleet | 2.73B | 31 |
| 7 | NeoArcturus <0.1% of the fleet | 546.0M | 5 |
7 accounts · 5.27T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 31.6% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.0% of the fleet | 43.05T | 301,666 |
| 3 | tenzink 15.0% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 11.0% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.7% of the fleet | 16.28T | 119,284 |
| 6 | RickEdinson 3.8% of the fleet | 10.82T | 72,212 |
| 7 | JackIV 3.5% of the fleet | 10.06T | 67,859 |
| 8 | Torom 2.6% of the fleet | 7.37T | 55,749 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.2% of the fleet | 6.20T | 42,008 |
and 25 more.
35 accounts · 286.14T 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 22 proposals · see every proposal
Milestones
- Oct 09 00:57 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. Nc3 Na6 … Rb8 10. Qa4 b5 11. Qa5 g6
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 g6 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … b5 11. Qa5 g6 12. Qc7 Nd5
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 g6 12. Qc7 Nd5 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 10. Qa4 b5 11. Qa5 g6 12. Qc7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 g6 12. Qc7 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … b5 11. Qa5 g6 12. Bh6 Bxh6
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 g6 12. Bh6 Bxh6 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 10. Qa4 b5 11. Qa5 g6 12. Bh6
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 g6 12. Bh6 - Oct 09 00:57 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. Nc3 Na6 … Rb8 10. Qa4 b5 11. Qa5 b4
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 b4 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … Kd7 20. Rd8 Ke7 21. d6 Kf7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 Rb6 12. c5 b4 13. cxd6 b3 14. Nd6 Kd8 15. a3 g5 16. Be3 e5 17. Rc1 Bxd6 18. d5 g4 19. Rc8 Kd7 20. Rd8 Ke7 21. d6 Kf7 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 19. Rc8 Kd7 20. Rd8 Ke7 21. d6
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 Rb6 12. c5 b4 13. cxd6 b3 14. Nd6 Kd8 15. a3 g5 16. Be3 e5 17. Rc1 Bxd6 18. d5 g4 19. Rc8 Kd7 20. Rd8 Ke7 21. d6 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … g4 19. Rc8 Kd7 20. Rd8 Ke7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 Rb6 12. c5 b4 13. cxd6 b3 14. Nd6 Kd8 15. a3 g5 16. Be3 e5 17. Rc1 Bxd6 18. d5 g4 19. Rc8 Kd7 20. Rd8 Ke7 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 18. d5 g4 19. Rc8 Kd7 20. Rd8
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 Rb6 12. c5 b4 13. cxd6 b3 14. Nd6 Kd8 15. a3 g5 16. Be3 e5 17. Rc1 Bxd6 18. d5 g4 19. Rc8 Kd7 20. Rd8 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … Bxd6 18. d5 g4 19. Rc8 Kd7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 Rb6 12. c5 b4 13. cxd6 b3 14. Nd6 Kd8 15. a3 g5 16. Be3 e5 17. Rc1 Bxd6 18. d5 g4 19. Rc8 Kd7 - Oct 09 00:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 17. Rc1 Bxd6 18. d5 g4 19. Rc8
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 Ne7 7. e4 a6 8. d4 Rg8 9. c4 Rb8 10. Qa4 b5 11. Qa5 Rb6 12. c5 b4 13. cxd6 b3 14. Nd6 Kd8 15. a3 g5 16. Be3 e5 17. Rc1 Bxd6 18. d5 g4 19. Rc8