74.2M
positions
13.8M
practically solved
266.12T
engine nodes
2.1M
analyses
823
in queue
8
active workers
48
active cores
0
nodes / sec
21.3
positions / min
82
proof number
3,797
disproof number
Root conquest: 0/20 first moves solved · 18.6% of tree positions solved · last 24h: 104,262 closures, 3.58T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 68 over 212 open obligations, of which 40 (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 2.8m (median of 8) · measured at 2026-10-04 05:00 UTC
Closures by source, last 24h (104226 of 104226 labelled): USER 99.0% (103213) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 1.0% (1013) · last 7d (2241049 of 2241085): USER 99.8% (2236725) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.2% (4324). 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. Ne5 fxe5 … 27. b5 Ke8 28. Bh6 a6 29. b6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. Ne5 fxe5 … 29. d6 Kd7 30. Kb2 Ng6 31. h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. Ne5 fxe5 … 26. f5 Ke8 27. Bg7 h5 28. Bh6 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. Ne5 fxe5 … 27. b5 Be4 28. h3 Nb4 29. Bxd6 (User) · 128.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. Nf3 f6 2. Ne5 fxe5 … 27. Bf6 Ke8 28. h4 Bd3 29. Be7 (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 | 1101 | 2 | |
| g1h3 | unsolved | 724 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 440 | 2 | |
| e2e4 | unsolved | 418 | 2 | |
| b1c3 | unsolved | 114 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| 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 | BManBJ 46.7% of the fleet | 1.67T | 12,447 |
| 2 | randomchampgamer 19.9% of the fleet | 712.85B | 5,094 |
| 3 | tenzink 19.3% of the fleet | 691.78B | 4,785 |
| 4 | RickEdinson 13.8% of the fleet | 493.08B | 3,190 |
| 5 | MoNiKaMaDnEsS 0.3% of the fleet | 11.63B | 92 |
5 accounts · 3.58T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 33.9% of the fleet | 90.30T | 751,082 |
| 2 | tenzink 15.1% of the fleet | 40.28T | 332,551 |
| 3 | BManBJ 13.5% of the fleet | 36.00T | 254,335 |
| 4 | auranvesdranor 11.8% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 4.9% of the fleet | 13.13T | 97,616 |
| 6 | JackIV 3.8% of the fleet | 10.06T | 67,859 |
| 7 | RickEdinson 3.2% of the fleet | 8.59T | 57,602 |
| 8 | gannet 2.7% of the fleet | 7.24T | 46,848 |
| 9 | MoNiKaMaDnEsS 2.0% of the fleet | 5.21T | 34,838 |
| 10 | NeoArcturus 1.5% of the fleet | 4.09T | 16,758 |
and 25 more.
35 accounts · 266.21T 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 · 4 votes
- Refuting 1... d61. Nf3 d6 2. Nc3proposed by randomchampgamer · 3 votes
- The weaker of the two f-pawn advances for 1. ...d61. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4proposed by MoNiKaMaDnEsS · 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 21 proposals · see every proposal
Milestones
- Oct 04 05:38 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … b5 13. f4 Rc8 14. Bf7 Kg7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Kg7 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Be5 19. dxe5 g5 20. Qe8 Kg7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Kg7 15. h4 Kf8 16. exf5 Rc3 17. Nxc3 Bg7 18. Bxe6 Be5 19. dxe5 g5 20. Qe8 Kg7 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 18. Bxe6 Be5 19. dxe5 g5 20. Qe8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Kg7 15. h4 Kf8 16. exf5 Rc3 17. Nxc3 Bg7 18. Bxe6 Be5 19. dxe5 g5 20. Qe8 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bg7 18. Bxe6 Be5 19. dxe5 g5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Kg7 15. h4 Kf8 16. exf5 Rc3 17. Nxc3 Bg7 18. Bxe6 Be5 19. dxe5 g5 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Nxc3 Bg7 18. Bxe6 Be5 19. dxe5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Kg7 15. h4 Kf8 16. exf5 Rc3 17. Nxc3 Bg7 18. Bxe6 Be5 19. dxe5 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. f4 Rc8 14. Bf7 Kg7 15. h4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Kg7 15. h4 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. f4 Rc8 14. Bf7 Kg7 15. e5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Kg7 15. e5 - Oct 04 05:38 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … b5 13. f4 Rc8 14. Bf7 Rg8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Rg8 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. e5 Rg7 16. exd6 Rc6 17. Nc3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Rg8 15. e5 Rg7 16. exd6 Rc6 17. Nc3 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rg8 15. e5 Rg7 16. exd6 Rc6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Rg8 15. e5 Rg7 16. exd6 Rc6 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. Bf7 Rg8 15. e5 Rg7 16. exd6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Rg8 15. e5 Rg7 16. exd6 - Oct 04 05:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rc8 14. Bf7 Rg8 15. e5 Rg7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Rh8 10. Bb5 Kf8 11. Be8 e6 12. Qe2 b5 13. f4 Rc8 14. Bf7 Rg8 15. e5 Rg7