83.8M
positions
16.0M
practically solved
308.31T
engine nodes
2.3M
analyses
79
in queue
2
active workers
14
active cores
7.1M
nodes / sec
4.4
positions / min
85
proof number
4,538
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 98,776 closures, 1.83T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 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 4.6m (median of 16) · measured at 2026-10-14 22:00 UTC
Closures by source, last 24h (98776 of 98776 labelled): USER 99.6% (98399) · FILL 0.2% (240) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.1% (137) · last 7d (1059332 of 1059332): USER 96.9% (1026144) · FILL 0.3% (3207) · AUTO 2.8% (29472) · SOLVE 0.0% (0) · NONE 0.0% (509). 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 … 12. c3 Ne5 13. Bxe5 b6 14. g4 (User) · 512.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Bg4 8. f3 Bf5 9. O-O e5 (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 | 1134 | 2 | |
| g1h3 | unsolved | 703 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 395 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -65 | 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 | randomchampgamer 37.4% of the fleet | 684.18B | 2,933 |
| 2 | MoNiKaMaDnEsS 22.7% of the fleet | 415.09B | 2,360 |
| 3 | RickEdinson 21.4% of the fleet | 391.53B | 2,003 |
| 4 | BManBJ 18.5% of the fleet | 338.24B | 1,868 |
4 accounts · 1.83T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.3% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.2% of the fleet | 49.94T | 344,541 |
| 3 | tenzink 13.9% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.2% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.3% of the fleet | 19.30T | 135,807 |
| 6 | Torom 5.1% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.3% of the fleet | 13.27T | 86,751 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.5% of the fleet | 7.71T | 51,450 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 308.34T 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 14 22:46 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Ng8 8. d3 Bf5 9. O-O b6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kd7 19. Re7 Kc8 20. Rc7 Kb8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8 Ke7 18. Re8 Kd7 19. Re7 Kc8 20. Rc7 Kb8 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 18. Re8 Kd7 19. Re7 Kc8 20. Rc7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8 Ke7 18. Re8 Kd7 19. Re7 Kc8 20. Rc7 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Ke7 18. Re8 Kd7 19. Re7 Kc8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8 Ke7 18. Re8 Kd7 19. Re7 Kc8 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Rf8 Ke7 18. Re8 Kd7 19. Re7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8 Ke7 18. Re8 Kd7 19. Re7 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Ne5 17. Rf8 Ke7 18. Re8 Kd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8 Ke7 18. Re8 Kd7 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. fxe5 Ne5 17. Rf8 Ke7 18. Re8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8 Ke7 18. Re8 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nc6 16. fxe5 Ne5 17. Rf8 Ke7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8 Ke7 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 17. Rf8 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … c5 15. Bxg8 Nc6 16. fxe5 Ne5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 Ne5 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6 16. fxe5 - Oct 14 22:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bg7 14. Bc4 c5 15. Bxg8 Nc6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. f3 Ng8 8. d3 Bf5 9. O-O b6 10. Nd8 Bh3 11. gxh3 g6 12. Qe1 e5 13. f4 Bg7 14. Bc4 c5 15. Bxg8 Nc6