59.2M
positions
9.9M
practically solved
213.17T
engine nodes
1.7M
analyses
5,024
in queue
13
active workers
89
active cores
37.3M
nodes / sec
30.0
positions / min
131
proof number
3,777
disproof number
Root conquest: 0/20 first moves solved · 16.8% of tree positions solved · last 24h: 571,383 closures, 5.99T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 79 over 168 open obligations, of which 28 (16.7%) 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 1.8m (median of 89) · measured at 2026-09-20 03:00 UTC
Closures by source, last 24h (571061 of 571147 labelled): USER 99.9% (570610) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.1% (451) · last 7d (2255015 of 2255226): USER 98.7% (2226674) · FILL 0.2% (3501) · AUTO 0.9% (21080) · SOLVE 0.0% (0) · NONE 0.2% (3760). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nh3 e6 2. e3 g6 … 16. Bxa3 Nc5 17. a4 Ba6 18. Nf4 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nh3 e6 2. e3 g6 … 16. Bxa3 Nc5 17. a4 Ba6 18. Ng5 (User) · 128.0M nodes · auranvesdranor-j-002-atomicdb
- 1. Nh3 e6 2. e3 g6 … 16. Bxa3 Nc5 17. a4 Ba6 18. d4 (User) · 128.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Kg8 19. Rb1 Rb8 20. Re1 Kf8 (User) · 512.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Kg8 19. Rb1 Rb8 20. Re1 c5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
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 | 1081 | 2 | |
| g1h3 | unsolved | 717 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 435 | 2 | |
| e2e4 | unsolved | 417 | 2 | |
| b1c3 | unsolved | 72 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | 0 | 3 | |
| b1a3 | unsolved | 0 | 3 | |
| h2h3 | unsolved | -100 | 2 | |
| a2a3 | unsolved | -103 | 2 | |
| f2f3 | unsolved | -110 | 2 | |
| d2d3 | unsolved | -116 | 2 | |
| b2b3 | unsolved | -119 | 1 | |
| f2f4 | unsolved | -223 | 3 | |
| h2h4 | unsolved | -500 | 2 | |
| a2a4 | unsolved | -502 | 2 | |
| g2g4 | unsolved | -600 | 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 26.0% of the fleet | 1.56T | 11,400 |
| 2 | auranvesdranor 20.9% of the fleet | 1.25T | 9,557 |
| 3 | JackIV 16.8% of the fleet | 1.00T | 4,983 |
| 4 | Torom 13.8% of the fleet | 825.66B | 5,792 |
| 5 | tenzink 10.2% of the fleet | 609.70B | 4,184 |
| 6 | randomchampgamer 8.6% of the fleet | 517.13B | 4,193 |
| 7 | quasa 2.4% of the fleet | 143.45B | 1,057 |
| 8 | MoNiKaMaDnEsS 1.2% of the fleet | 70.22B | 488 |
| 9 | soothdest 0.2% of the fleet | 10.29B | 79 |
| 10 | NeoArcturus <0.1% of the fleet | 640.0M | 5 |
10 accounts · 5.99T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 37.3% of the fleet | 79.65T | 677,611 |
| 2 | tenzink 16.3% of the fleet | 34.79T | 294,711 |
| 3 | auranvesdranor 11.3% of the fleet | 24.13T | 173,829 |
| 4 | BManBJ 11.1% of the fleet | 23.77T | 162,123 |
| 5 | JackIV 4.4% of the fleet | 9.49T | 64,360 |
| 6 | randomchampgamer 3.7% of the fleet | 8.00T | 57,606 |
| 7 | RickEdinson 3.0% of the fleet | 6.32T | 41,667 |
| 8 | NeoArcturus 1.9% of the fleet | 4.09T | 16,756 |
| 9 | MoNiKaMaDnEsS 1.8% of the fleet | 3.88T | 24,661 |
| 10 | ijh 1.7% of the fleet | 3.57T | 37,348 |
and 22 more.
32 accounts · 213.36T 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 · 16 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
- 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
- Is Nh3 h6 e3 e6 Nc3 a draw?1. Nh3 e6 2. e3 h6 3. Nc3proposed by soothdest · 3 votes
Showing the 6 most voted of 19 proposals · see every proposal
Milestones
- Sep 20 03:59 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. Nc3 g6 … Rb8 8. Bb5 Kf7 9. Qf3 a6
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … g3 14. f4 gxh2 15. Qg6 Kh8
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 12. Qh3 g4 13. Qh5 g3 14. f4 gxh2 15. Qg6 Kh8 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … 13. Qh5 g3 14. f4 gxh2 15. Qg6
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 12. Qh3 g4 13. Qh5 g3 14. f4 gxh2 15. Qg6 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … g4 13. Qh5 g3 14. f4 gxh2
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 12. Qh3 g4 13. Qh5 g3 14. f4 gxh2 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … 12. Qh3 g4 13. Qh5 g3 14. f4
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 12. Qh3 g4 13. Qh5 g3 14. f4 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … g5 12. Qh3 g4 13. Qh5 g3
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 12. Qh3 g4 13. Qh5 g3 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … 11. Be8 g5 12. Qh3 g4 13. Qh5
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 12. Qh3 g4 13. Qh5 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … Kg8 11. Be8 g5 12. Qh3 g4
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 12. Qh3 g4 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … 10. Qg3 Kg8 11. Be8 g5 12. Qh3
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 12. Qh3 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … a6 10. Qg3 Kg8 11. Be8 g5
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 g5 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … 9. Qf3 a6 10. Qg3 Kg8 11. Be8
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8 11. Be8 - Sep 20 03:59 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 g6 … Kf7 9. Qf3 a6 10. Qg3 Kg8
1. Nf3 f6 2. Nc3 g6 3. Nd5 e6 4. Nxc7 d6 5. Ng5 h6 6. Nh7 Rxh7 7. e3 Rb8 8. Bb5 Kf7 9. Qf3 a6 10. Qg3 Kg8