93.8M
positions
19.0M
practically solved
342.19T
engine nodes
2.6M
analyses
51
in queue
14
active workers
68
active cores
98.7M
nodes / sec
44.9
positions / min
108
proof number
4,747
disproof number
Root conquest: 0/20 first moves solved · 20.2% of tree positions solved · last 24h: 1.0M closures, 7.32T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 208 open obligations, of which 39 (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 1.3m (median of 80) · measured at 2026-10-22 06:00 UTC
Closures by source, last 24h (1039344 of 1039344 labelled): USER 99.5% (1033724) · FILL 0.2% (2160) · AUTO 0.3% (3413) · SOLVE 0.0% (0) · NONE 0.0% (47) · last 7d (2733897 of 2733978): USER 97.2% (2658107) · FILL 0.4% (11976) · AUTO 2.2% (60947) · SOLVE 0.0% (0) · NONE 0.1% (2867). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- deep line, ply ≥25 · … Nd2 Kh8 e5 g5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- deep line, ply ≥25 · … Nd2 Kh8 e5 Nd5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- deep line, ply ≥25 · … Nd2 Kh8 e5 e6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- deep line, ply ≥25 · … Nd2 Kh8 e5 Ng4 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- deep line, ply ≥25 · … Nd2 Kh8 e5 bxc4 (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 | 1162 | 2 | |
| g1h3 | unsolved | 630 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 402 | 2 | |
| e2e4 | unsolved | 400 | 2 | |
| b1c3 | unsolved | 138 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -65 | 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 62.9% of the fleet | 4.60T | 34,513 |
| 2 | BManBJ 26.0% of the fleet | 1.90T | 14,961 |
| 3 | RickEdinson 6.7% of the fleet | 493.98B | 2,998 |
| 4 | MoNiKaMaDnEsS 4.0% of the fleet | 290.03B | 2,066 |
| 5 | soothdest 0.5% of the fleet | 33.49B | 199 |
5 accounts · 7.32T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 26.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 18.1% of the fleet | 61.83T | 438,493 |
| 3 | tenzink 12.5% of the fleet | 42.83T | 349,427 |
| 4 | Torom 9.4% of the fleet | 32.09T | 230,241 |
| 5 | auranvesdranor 9.2% of the fleet | 31.40T | 228,002 |
| 6 | randomchampgamer 5.8% of the fleet | 19.85T | 140,897 |
| 7 | RickEdinson 4.9% of the fleet | 16.63T | 109,922 |
| 8 | JackIV 2.9% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.8% of the fleet | 9.49T | 65,312 |
| 10 | gannet 2.1% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 342.41T 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 · 18 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 23 proposals · see every proposal
Milestones
- Oct 22 06:42 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥25 · … Nd2 Kh8 e5 Rb8
deep line, ply ≥25 · … Nd2 Kh8 e5 Rb8 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥45 · … Qh7 Kf6 Qe7 Kg6
deep line, ply ≥45 · … Qh7 Kf6 Qe7 Kg6 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥44 · … d5 Qh7 Kf6 Qe7
deep line, ply ≥44 · … d5 Qh7 Kf6 Qe7 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥43 · … Qc2 d5 Qh7 Kf6
deep line, ply ≥43 · … Qc2 d5 Qh7 Kf6 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥42 · … Kg7 Qc2 d5 Qh7
deep line, ply ≥42 · … Kg7 Qc2 d5 Qh7 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥41 · … Bxe8 Kg7 Qc2 d5
deep line, ply ≥41 · … Bxe8 Kg7 Qc2 d5 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥40 · … Re8 Bxe8 Kg7 Qc2
deep line, ply ≥40 · … Re8 Bxe8 Kg7 Qc2 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥39 · … b4 Re8 Bxe8 Kg7
deep line, ply ≥39 · … b4 Re8 Bxe8 Kg7 - Oct 22 06:42 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥25 · … Nd2 Kh8 e5 Nxd7
deep line, ply ≥25 · … Nd2 Kh8 e5 Nxd7 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥38 · … g5 b4 Re8 Bxe8
deep line, ply ≥38 · … g5 b4 Re8 Bxe8 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥37 · … O-O g5 b4 Re8
deep line, ply ≥37 · … O-O g5 b4 Re8 - Oct 22 06:42 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥36 · … Rb8 O-O g5 b4
deep line, ply ≥36 · … Rb8 O-O g5 b4