106.0M
positions
22.5M
practically solved
393.48T
engine nodes
2.9M
analyses
4,917
in queue
active workers
132
active cores
148.3M
nodes / sec
64.6
positions / min
120
proof number
4,012
disproof number
Root conquest: 0/20 first moves solved · 21.2% of tree positions solved · last 24h: 226,340 closures, 8.14T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 72 over 198 open obligations, of which 37 (18.7%) 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 2.5h (median of 44) · measured at 2026-11-02 04:00 UTC
Closures by source, last 24h (226291 of 226291 labelled): USER 98.1% (222025) · FILL 1.5% (3304) · AUTO 0.4% (890) · SOLVE 0.0% (0) · NONE 0.0% (72) · last 7d (1270704 of 1270753): USER 98.1% (1246865) · FILL 0.8% (10420) · AUTO 1.0% (12927) · SOLVE 0.0% (0) · NONE 0.0% (492). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing all workers
- 1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 Kf7 13. Be7 Bd7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 Kf7 13. Be7 Rb8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 Kf7 13. Be7 Bg7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … Na6 12. a3 Kf7 13. Be7 Bh6 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- … (User) · 128.0M nodes · foxglove
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 | 991 | 2 | |
| g1h3 | unsolved | 748 | 2 | |
| d2d4 | unsolved | 443 | 2 | |
| e2e3 | unsolved | 437 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| b1c3 | unsolved | 142 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -59 | 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 | 3 | |
| a2a4 | unsolved | -514 | 2 | |
| g2g4 | unsolved | -604 | 3 | |
| 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 | gannet 44.9% of the fleet | 3.65T | 25,854 |
| 2 | Torom 26.3% of the fleet | 2.14T | 15,548 |
| 3 | BManBJ 20.5% of the fleet | 1.67T | 7,024 |
| 4 | RickEdinson 5.5% of the fleet | 448.13B | 3,006 |
| 5 | MoNiKaMaDnEsS 2.3% of the fleet | 185.28B | 1,249 |
| 6 | soothdest 0.6% of the fleet | 45.48B | 271 |
6 accounts · 8.14T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 22.9% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.4% of the fleet | 80.53T | 538,823 |
| 3 | Torom 13.4% of the fleet | 52.69T | 379,069 |
| 4 | tenzink 10.9% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.0% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 21.75T | 142,662 |
| 7 | randomchampgamer 5.0% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.2% of the fleet | 12.73T | 87,989 |
| 9 | gannet 2.8% of the fleet | 11.02T | 73,733 |
| 10 | JackIV 2.6% of the fleet | 10.06T | 67,859 |
and 25 more.
35 accounts · 393.90T 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
- Nov 02 04:55 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. e4 c6 … Nh6 11. e5 fxe5 12. h5 Kf7
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Bxe6 19. Qf3 d5 20. Qf7 Kd8
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6 Ke8 18. Re6 Bxe6 19. Qf3 d5 20. Qf7 Kd8 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 18. Re6 Bxe6 19. Qf3 d5 20. Qf7
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6 Ke8 18. Re6 Bxe6 19. Qf3 d5 20. Qf7 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Ke8 18. Re6 Bxe6 19. Qf3 d5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6 Ke8 18. Re6 Bxe6 19. Qf3 d5 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 17. Rf6 Ke8 18. Re6 Bxe6 19. Qf3
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6 Ke8 18. Re6 Bxe6 19. Qf3 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … e5 17. Rf6 Ke8 18. Re6 Bxe6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6 Ke8 18. Re6 Bxe6 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 16. Bxa4 e5 17. Rf6 Ke8 18. Re6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6 Ke8 18. Re6 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Qa4 16. Bxa4 e5 17. Rf6 Ke8
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6 Ke8 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 17. Rf6 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Kf8 15. Rh6 Qa4 16. Bxa4 e5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 e5 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4 16. Bxa4 - Nov 02 04:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Kg8 14. hxg6 Kf8 15. Rh6 Qa4
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 Nc6 6. Bb5 Qa5 7. c3 Bh6 8. Ng5 Bxg5 9. h4 d6 10. g4 Nh6 11. e5 fxe5 12. h5 Kf7 13. Bg5 Kg8 14. hxg6 Kf8 15. Rh6 Qa4