72.4M
positions
13.4M
practically solved
259.12T
engine nodes
2.0M
analyses
8,957
in queue
11
active workers
72
active cores
7.1M
nodes / sec
23.0
positions / min
82
proof number
3,797
disproof number
Root conquest: 0/20 first moves solved · 18.5% of tree positions solved · last 24h: 488,472 closures, 5.03T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 79 over 203 open obligations, of which 33 (16.3%) 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 2.4m (median of 144) · measured at 2026-10-02 07:00 UTC
Closures by source, last 24h (488376 of 488376 labelled): USER 99.8% (487421) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.2% (955) · last 7d (2994026 of 2994122): USER 98.5% (2949167) · FILL 0.3% (8795) · AUTO 1.1% (32065) · SOLVE 0.0% (0) · NONE 0.1% (3999). 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 … 20. Ne6 Nc5 21. Nf8 Na4 22. Rg1 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nh3 e6 2. e3 g6 … 20. Ne6 Nc5 21. Nf8 Na4 22. Rd1 (User) · 128.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Rc8 14. Bc4 Kh8 15. Nc7 d5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Rc8 14. Bc4 Kh8 15. Nc7 a6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Rc8 14. Bc4 Kh8 15. Nc7 b5 (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 | 1101 | 2 | |
| g1h3 | unsolved | 746 | 2 | |
| e2e3 | unsolved | 488 | 3 | |
| d2d4 | unsolved | 439 | 2 | |
| e2e4 | unsolved | 417 | 2 | |
| b1c3 | unsolved | 131 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | 0 | 3 | |
| b1a3 | unsolved | 0 | 3 | |
| h2h3 | unsolved | -97 | 2 | |
| d2d3 | unsolved | -98 | 2 | |
| a2a3 | unsolved | -100 | 2 | |
| f2f3 | unsolved | -117 | 3 | |
| b2b3 | unsolved | -144 | 1 | |
| f2f4 | unsolved | -305 | 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 30.3% of the fleet | 1.52T | 12,060 |
| 2 | auranvesdranor 20.9% of the fleet | 1.05T | 8,025 |
| 3 | tenzink 13.0% of the fleet | 651.79B | 4,737 |
| 4 | randomchampgamer 12.4% of the fleet | 625.23B | 4,881 |
| 5 | MoNiKaMaDnEsS 9.0% of the fleet | 450.57B | 3,446 |
| 6 | RickEdinson 8.9% of the fleet | 448.43B | 3,256 |
| 7 | gannet 3.2% of the fleet | 159.45B | 1,237 |
| 8 | quasa 2.4% of the fleet | 120.64B | 937 |
8 accounts · 5.03T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 34.8% of the fleet | 90.30T | 751,082 |
| 2 | tenzink 15.0% of the fleet | 38.98T | 323,174 |
| 3 | BManBJ 12.8% of the fleet | 33.10T | 232,682 |
| 4 | auranvesdranor 11.9% of the fleet | 30.82T | 223,551 |
| 5 | randomchampgamer 4.6% of the fleet | 11.81T | 87,721 |
| 6 | JackIV 3.9% of the fleet | 10.06T | 67,859 |
| 7 | RickEdinson 3.0% of the fleet | 7.67T | 51,294 |
| 8 | gannet 2.8% of the fleet | 7.24T | 46,848 |
| 9 | MoNiKaMaDnEsS 2.0% of the fleet | 5.17T | 34,516 |
| 10 | NeoArcturus 1.6% of the fleet | 4.09T | 16,758 |
and 25 more.
35 accounts · 259.13T 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
- 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 02 07:08 Solved: WHITE_WIN via MINIMAXview
1. Na3 e5 2. Nf3 Qg5 … f5 7. axb5 Rc8 8. e4 Nh6
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 f5 7. axb5 Rc8 8. e4 Nh6 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … d5 17. Qa4 Ke7 18. Qd7 Kf6
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 15. dxc4 Bh4 16. g3 d5 17. Qa4 Ke7 18. Qd7 Kf6 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 16. g3 d5 17. Qa4 Ke7 18. Qd7
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 15. dxc4 Bh4 16. g3 d5 17. Qa4 Ke7 18. Qd7 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Bh4 16. g3 d5 17. Qa4 Ke7
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 15. dxc4 Bh4 16. g3 d5 17. Qa4 Ke7 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 15. dxc4 Bh4 16. g3 d5 17. Qa4
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 15. dxc4 Bh4 16. g3 d5 17. Qa4 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Be7 15. dxc4 Bh4 16. g3 d5
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 15. dxc4 Bh4 16. g3 d5 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 14. d3 Be7 15. dxc4 Bh4 16. g3
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 15. dxc4 Bh4 16. g3 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Rc4 14. d3 Be7 15. dxc4 Bh4
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 15. dxc4 Bh4 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 13. Bxd3 Rc4 14. d3 Be7 15. dxc4
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 15. dxc4 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Nd3 13. Bxd3 Rc4 14. d3 Be7
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 Be7 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4 14. d3 - Oct 02 07:08 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Nf2 12. Qa2 Nd3 13. Bxd3 Rc4
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 b5 6. a4 Rc8 7. c3 f5 8. axb5 Nh6 9. e4 Ng4 10. f4 Rc6 11. Qa4 Nf2 12. Qa2 Nd3 13. Bxd3 Rc4