79.1M
positions
15.2M
practically solved
285.62T
engine nodes
2.2M
analyses
6,146
in queue
6
active workers
34
active cores
15.7M
nodes / sec
10.2
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 328,121 closures, 6.04T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 69 over 218 open obligations, of which 41 (18.8%) 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 2.3m (median of 8) · measured at 2026-10-08 20:00 UTC
Closures by source, last 24h (328121 of 328121 labelled): USER 95.8% (314449) · FILL 0.5% (1651) · AUTO 3.6% (11927) · SOLVE 0.0% (0) · NONE 0.0% (94) · last 7d (1771949 of 1771949): USER 99.0% (1753989) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.2% (3937). 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. Nc3 Nh6 … Bd6 9. Nc7 Kf8 10. Nxh7 Nb4 (User) · 512.0M nodes · BManBJ-Blake-atomicdb
- 1. e4 d6 2. Nh3 f5 … 12. Qg5 Ng4 13. f3 Nf6 14. Nd8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. d4 Nh6 2. f3 d5 … Nc5 22. b6 a3 23. O-O Ne4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nh3 d5 2. Nc3 h6 … e5 14. h4 b6 15. e4 f4 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. d4 Nh6 2. f3 d5 … 21. d7 Nc5 22. b6 a3 23. O-O (User) · 128.0M nodes · randomchampgamer-2026PC-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 | 999 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 364 | 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 52.6% of the fleet | 3.18T | 24,045 |
| 2 | BManBJ 25.2% of the fleet | 1.52T | 10,438 |
| 3 | randomchampgamer 10.9% of the fleet | 661.32B | 4,629 |
| 4 | RickEdinson 7.2% of the fleet | 438.16B | 2,933 |
| 5 | MoNiKaMaDnEsS 3.2% of the fleet | 193.30B | 1,673 |
| 6 | tenzink 0.7% of the fleet | 44.85B | 238 |
| 7 | soothdest <0.1% of the fleet | 2.73B | 31 |
| 8 | NeoArcturus <0.1% of the fleet | 546.0M | 5 |
8 accounts · 6.04T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 31.6% of the fleet | 90.30T | 751,082 |
| 2 | tenzink 15.0% of the fleet | 42.83T | 349,427 |
| 3 | BManBJ 15.0% of the fleet | 42.80T | 300,009 |
| 4 | auranvesdranor 11.0% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.7% of the fleet | 16.17T | 118,529 |
| 6 | RickEdinson 3.8% of the fleet | 10.75T | 71,784 |
| 7 | JackIV 3.5% of the fleet | 10.06T | 67,859 |
| 8 | Torom 2.6% of the fleet | 7.37T | 55,749 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.2% of the fleet | 6.20T | 42,008 |
and 25 more.
35 accounts · 285.71T 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 21 proposals · see every proposal
Milestones
- Oct 08 20:57 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. e4 e6 … Ke7 30. Kf1 a5 31. a4 h5
1. Nf3 f6 2. e4 e6 3. Na3 c6 4. Nb5 cxb5 5. Bb5 Nc6 6. O-O Bd6 7. e5 Bb4 8. h3 Nh6 9. c3 Ng4 10. Kh1 O-O 11. Ng5 h6 12. Nh7 Kh8 13. hxg4 f5 14. g3 d5 15. d4 f4 16. Nxf8 f3 17. Kh2 Be7 18. Bg5 Bxg5 19. Qd2 Kg8 20. Rh1 Nxd4 21. Kg1 Qb6 22. Qe3 Qxe3 23. Bd3 g5 24. Bh7 Kf8 25. c4 Bd7 26. g4 Rc8 27. c5 d4 28. Rc1 Bc6 29. Bd3 Ke7 30. Kf1 a5 31. a4 h5 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Kg3 Kf2 Kh3 Kg2
deep line, ply ≥96 · … Kg3 Kf2 Kh3 Kg2 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Ke1 Kg3 Kf2 Kh3
deep line, ply ≥96 · … Ke1 Kg3 Kf2 Kh3 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Qf4 Ke1 Kg3 Kf2
deep line, ply ≥96 · … Qf4 Ke1 Kg3 Kf2 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Kf1 Qf4 Ke1 Kg3
deep line, ply ≥96 · … Kf1 Qf4 Ke1 Kg3 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Rc7 Kf1 Qf4 Ke1
deep line, ply ≥96 · … Rc7 Kf1 Qf4 Ke1 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Kg2 Rc7 Kf1 Qf4
deep line, ply ≥96 · … Kg2 Rc7 Kf1 Qf4 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Qb1 Kg2 Rc7 Kf1
deep line, ply ≥96 · … Qb1 Kg2 Rc7 Kf1 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Kg1 Qb1 Kg2 Rc7
deep line, ply ≥96 · … Kg1 Qb1 Kg2 Rc7 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … b8=Q Kg1 Qb1 Kg2
deep line, ply ≥96 · … b8=Q Kg1 Qb1 Kg2 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … Kg2 b8=Q Kg1 Qb1
deep line, ply ≥96 · … Kg2 b8=Q Kg1 Qb1 - Oct 08 20:57 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥96 · … b7 Kg2 b8=Q Kg1
deep line, ply ≥96 · … b7 Kg2 b8=Q Kg1