92.7M
positions
18.5M
practically solved
339.36T
engine nodes
2.6M
analyses
988
in queue
7
active workers
28
active cores
0
nodes / sec
29.2
positions / min
143
proof number
4,658
disproof number
Root conquest: 0/20 first moves solved · 20.0% of tree positions solved · last 24h: 944,109 closures, 7.45T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 207 open obligations, of which 38 (18.4%) 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 9.2m (median of 107) · measured at 2026-10-21 21:00 UTC
Closures by source, last 24h (944109 of 944109 labelled): USER 99.9% (943259) · FILL 0.0% (441) · AUTO 0.0% (320) · SOLVE 0.0% (0) · NONE 0.0% (89) · last 7d (2351657 of 2351657): USER 96.5% (2270314) · FILL 0.5% (10933) · AUTO 2.9% (67528) · SOLVE 0.0% (0) · NONE 0.1% (2882). 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 ≥24 · … Ba6 Rd8 Qe2 Nh7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- deep line, ply ≥24 · … Ba6 Rd8 Qe2 Ng8 (User) · 128.0M nodes · Torom-torsten-pc-atomicdb#0
- deep line, ply ≥47 · … Ra1 Nc6 Rb1 e5 (User) · 128.0M nodes · Torom-torsten-pc-atomicdb#1
- deep line, ply ≥24 · … Ba6 Rd8 Qe2 Ne8 (User) · 128.0M nodes · Torom-torsten-pc-atomicdb#3
- deep line, ply ≥24 · … Ba6 Rd8 Qe2 Kf7 (User) · 128.0M nodes · Torom-torsten-pc-atomicdb#5
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 | 1184 | 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 62.5% of the fleet | 4.65T | 34,899 |
| 2 | BManBJ 26.0% of the fleet | 1.94T | 15,196 |
| 3 | RickEdinson 6.6% of the fleet | 488.62B | 2,867 |
| 4 | MoNiKaMaDnEsS 4.5% of the fleet | 338.42B | 2,306 |
| 5 | soothdest 0.4% of the fleet | 33.49B | 199 |
5 accounts · 7.45T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 26.6% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 18.0% of the fleet | 61.18T | 433,493 |
| 3 | tenzink 12.6% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 9.2% of the fleet | 31.40T | 228,002 |
| 5 | Torom 8.9% of the fleet | 30.25T | 216,513 |
| 6 | randomchampgamer 5.8% of the fleet | 19.85T | 140,897 |
| 7 | RickEdinson 4.8% of the fleet | 16.45T | 108,681 |
| 8 | JackIV 3.0% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.8% of the fleet | 9.38T | 64,473 |
| 10 | gannet 2.1% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 339.63T 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 21 22:01 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥24 · … Ba6 Rd8 Qe2 Kg7
deep line, ply ≥24 · … Ba6 Rd8 Qe2 Kg7 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥48 · … Qg5 Rxe6 Qf6 Kg8
deep line, ply ≥48 · … Qg5 Rxe6 Qf6 Kg8 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥47 · … Re8 Qg5 Rxe6 Qf6
deep line, ply ≥47 · … Re8 Qg5 Rxe6 Qf6 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥46 · … Qd8 Re8 Qg5 Rxe6
deep line, ply ≥46 · … Qd8 Re8 Qg5 Rxe6 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥45 · … Re7 Qd8 Re8 Qg5
deep line, ply ≥45 · … Re7 Qd8 Re8 Qg5 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥44 · … Qc7 Re7 Qd8 Re8
deep line, ply ≥44 · … Qc7 Re7 Qd8 Re8 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥43 · … Re8 Qc7 Re7 Qd8
deep line, ply ≥43 · … Re8 Qc7 Re7 Qd8 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥42 · … Qc8 Re8 Qc7 Re7
deep line, ply ≥42 · … Qc8 Re8 Qc7 Re7 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥41 · … Re7 Qc8 Re8 Qc7
deep line, ply ≥41 · … Re7 Qc8 Re8 Qc7 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥40 · … Qb7 Re7 Qc8 Re8
deep line, ply ≥40 · … Qb7 Re7 Qc8 Re8 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥39 · … Re8 Qb7 Re7 Qc8
deep line, ply ≥39 · … Re8 Qb7 Re7 Qc8 - Oct 21 22:01 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥38 · … g3 Re8 Qb7 Re7
deep line, ply ≥38 · … g3 Re8 Qb7 Re7