59.4M
positions
10.0M
practically solved
214.11T
engine nodes
1.7M
analyses
6,288
in queue
13
active workers
89
active cores
20.0M
nodes / sec
31.5
positions / min
131
proof number
3,777
disproof number
Root conquest: 0/20 first moves solved · 16.8% of tree positions solved · last 24h: 502,440 closures, 5.56T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 78 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 1.9h (median of 201) · measured at 2026-09-20 07:00 UTC
Closures by source, last 24h (502364 of 502367 labelled): USER 99.9% (501940) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.1% (424) · last 7d (2297017 of 2297087): USER 99.1% (2276529) · FILL 0.1% (2909) · AUTO 0.6% (13833) · SOLVE 0.0% (0) · NONE 0.2% (3746). 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 … Na6 10. f3 Bd6 11. h3 b6 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nh3 e6 2. e3 g6 … Na6 10. f3 Bd6 11. h3 h5 (User) · 128.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Bg7 13. Qa5 Kf7 14. Bxf4 Re8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nh3 h6 2. d4 e6 … Bh6 16. Ne6 Ke8 17. f4 Nge7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nh3 e6 2. e3 g6 … Na6 10. f3 Bd6 11. h3 d4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
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 | 1087 | 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 27.7% of the fleet | 1.54T | 11,369 |
| 2 | auranvesdranor 22.5% of the fleet | 1.25T | 9,590 |
| 3 | JackIV 18.2% of the fleet | 1.01T | 4,625 |
| 4 | tenzink 10.8% of the fleet | 602.96B | 4,181 |
| 5 | randomchampgamer 9.3% of the fleet | 516.61B | 4,187 |
| 6 | Torom 8.3% of the fleet | 464.11B | 3,174 |
| 7 | MoNiKaMaDnEsS 2.0% of the fleet | 108.81B | 802 |
| 8 | quasa 1.0% of the fleet | 58.38B | 451 |
| 9 | soothdest 0.2% of the fleet | 10.29B | 79 |
| 10 | NeoArcturus <0.1% of the fleet | 640.0M | 5 |
10 accounts · 5.56T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 37.2% of the fleet | 79.65T | 677,611 |
| 2 | tenzink 16.3% of the fleet | 34.88T | 295,396 |
| 3 | auranvesdranor 11.4% of the fleet | 24.40T | 175,836 |
| 4 | BManBJ 11.2% of the fleet | 23.99T | 163,815 |
| 5 | JackIV 4.5% of the fleet | 9.65T | 65,062 |
| 6 | randomchampgamer 3.8% of the fleet | 8.08T | 58,242 |
| 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 | 3.95T | 25,179 |
| 10 | ijh 1.7% of the fleet | 3.57T | 37,348 |
and 22 more.
32 accounts · 214.23T 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 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Rd8 10. e5 f5 11. Be8 Ke7
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 h5 8. Bb5 d5 9. d4 Rd8 10. e5 f5 11. Be8 Ke7 - Sep 20 07:36 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. Nc3 d6 … dxe4 10. O-O b6 11. Kh1 Kf7
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Kf8 16. Qd5 Ke8 17. Qf7 Kd8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 14. h3 Re8 15. Bxe8 Kf8 16. Qd5 Ke8 17. Qf7 Kd8 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … 15. Bxe8 Kf8 16. Qd5 Ke8 17. Qf7
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 14. h3 Re8 15. Bxe8 Kf8 16. Qd5 Ke8 17. Qf7 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Re8 15. Bxe8 Kf8 16. Qd5 Ke8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 14. h3 Re8 15. Bxe8 Kf8 16. Qd5 Ke8 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … 14. h3 Re8 15. Bxe8 Kf8 16. Qd5
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 14. h3 Re8 15. Bxe8 Kf8 16. Qd5 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Bd6 14. h3 Re8 15. Bxe8 Kf8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 14. h3 Re8 15. Bxe8 Kf8 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … 13. dxe6 Bd6 14. h3 Re8 15. Bxe8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 14. h3 Re8 15. Bxe8 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Kg8 13. dxe6 Bd6 14. h3 Re8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 14. h3 Re8 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … 12. d5 Kg8 13. dxe6 Bd6 14. h3
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 14. h3 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Kf7 12. d5 Kg8 13. dxe6 Bd6
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6 Bd6 - Sep 20 07:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … 11. Kh1 Kf7 12. d5 Kg8 13. dxe6
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Kf7 7. e4 Kg8 8. Bb5 d5 9. d4 dxe4 10. O-O b6 11. Kh1 Kf7 12. d5 Kg8 13. dxe6