80.4M
positions
15.5M
practically solved
290.96T
engine nodes
2.2M
analyses
3,222
in queue
7
active workers
42
active cores
5.5M
nodes / sec
13.3
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.3% of tree positions solved · last 24h: 262,583 closures, 4.52T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 219 open obligations, of which 41 (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 23.1m (median of 23) · measured at 2026-10-10 04:00 UTC
Closures by source, last 24h (262583 of 262583 labelled): USER 100.0% (262523) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (60) · last 7d (1669639 of 1669639): USER 99.0% (1652972) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.2% (2644). 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 … 22. g3 Kd7 23. Bd8 Kc8 24. f5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … 21. Rxa8 Rb8 22. b4 d6 23. g3 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. e4 e6 … 26. g4 Bg3 27. Kg2 Bc7 28. b4 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … Kh7 26. g4 Bb8 27. b4 Bc7 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … Kd7 23. Bd8 Kc8 24. e6 Nd6 (User) · 128.0M nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-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 | 1094 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 379 | 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 41.7% of the fleet | 1.89T | 12,733 |
| 2 | BManBJ 30.4% of the fleet | 1.37T | 8,453 |
| 3 | randomchampgamer 14.9% of the fleet | 675.93B | 4,512 |
| 4 | RickEdinson 9.8% of the fleet | 444.75B | 2,653 |
| 5 | MoNiKaMaDnEsS 3.1% of the fleet | 140.14B | 813 |
| 6 | soothdest <0.1% of the fleet | 8.0M | 17 |
6 accounts · 4.52T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 31.0% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.3% of the fleet | 44.67T | 311,853 |
| 3 | tenzink 14.7% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.8% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.9% of the fleet | 17.06T | 124,693 |
| 6 | RickEdinson 3.9% of the fleet | 11.33T | 75,355 |
| 7 | JackIV 3.5% of the fleet | 10.06T | 67,859 |
| 8 | Torom 3.2% of the fleet | 9.26T | 68,482 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.2% of the fleet | 6.34T | 42,821 |
and 25 more.
35 accounts · 291.09T 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 10 04:54 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … g6 8. Ne6 Bh6 9. Nxc7 a6
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 a6 - Oct 10 04:54 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … 8. Ne6 Bh6 9. Nxc7 a6 10. Bc4
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 a6 10. Bc4 - Oct 10 04:54 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Bh6 9. Nxc7 a6 10. Bc4 Rb8
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 a6 10. Bc4 Rb8 - Oct 10 04:54 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … 9. Nxc7 a6 10. Bc4 Rb8 11. Bf7
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 a6 10. Bc4 Rb8 11. Bf7 - Oct 10 04:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rc8 13. Qb4 Kd8 14. Qb6 Rc7
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 a6 10. Bc4 Rb8 11. Bf7 Kd7 12. Qd2 Rc8 13. Qb4 Kd8 14. Qb6 Rc7 - Oct 10 04:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. Qd2 Rc8 13. Qb4 Kd8 14. Qb6
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 a6 10. Bc4 Rb8 11. Bf7 Kd7 12. Qd2 Rc8 13. Qb4 Kd8 14. Qb6 - Oct 10 04:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kd7 12. Qd2 Rc8 13. Qb4 Kd8
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 a6 10. Bc4 Rb8 11. Bf7 Kd7 12. Qd2 Rc8 13. Qb4 Kd8 - Oct 10 04:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 10. Bc4 Rb8 11. Bf7 Kd7 12. Qd2
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 a6 10. Bc4 Rb8 11. Bf7 Kd7 12. Qd2 - Oct 10 04:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … a6 10. Bc4 Rb8 11. Bf7 Kd7
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 a6 10. Bc4 Rb8 11. Bf7 Kd7 - Oct 10 04:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Ne4 18. f3 Kb8 19. Qc7 Ka8
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 a6 10. Bc4 Rb8 11. Bf7 Kd8 12. Qd2 Rc8 13. Qa5 b6 14. Qa4 Rc6 15. e5 Kc8 16. exd6 b5 17. Qa5 Ne4 18. f3 Kb8 19. Qc7 Ka8 - Oct 10 04:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Qa5 Ne4 18. f3 Kb8 19. Qc7
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 a6 10. Bc4 Rb8 11. Bf7 Kd8 12. Qd2 Rc8 13. Qa5 b6 14. Qa4 Rc6 15. e5 Kc8 16. exd6 b5 17. Qa5 Ne4 18. f3 Kb8 19. Qc7 - Oct 10 04:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … b5 17. Qa5 Ne4 18. f3 Kb8
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 a6 10. Bc4 Rb8 11. Bf7 Kd8 12. Qd2 Rc8 13. Qa5 b6 14. Qa4 Rc6 15. e5 Kc8 16. exd6 b5 17. Qa5 Ne4 18. f3 Kb8