88.7M
positions
16.9M
practically solved
327.28T
engine nodes
2.5M
analyses
93
in queue
5
active workers
28
active cores
0
nodes / sec
10.2
positions / min
143
proof number
4,658
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 372,191 closures, 6.25T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 203 open obligations, of which 37 (18.2%) 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 153) · measured at 2026-10-19 20:00 UTC
Closures by source, last 24h (372191 of 372191 labelled): USER 98.9% (367992) · FILL 0.2% (754) · AUTO 0.3% (1002) · SOLVE 0.0% (0) · NONE 0.7% (2443) · last 7d (1049308 of 1049308): USER 92.6% (971558) · FILL 0.7% (7648) · AUTO 6.4% (67149) · SOLVE 0.0% (0) · NONE 0.3% (2953). 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 ≥30 · … Nc3 a4 e5 Ra5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … g5 12. a4 c5 13. d5 f4 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- deep line, ply ≥30 · … Nc3 a4 e5 Ra7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- deep line, ply ≥30 · … Nc3 a4 e5 Ra6 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nh3 d5 2. Nc3 h6 … 12. Nf7 O-O 13. h3 Bh5 14. Bxh6 (User) · 512.0M nodes · RickEdinson-MSI-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 | 1161 | 2 | |
| g1h3 | unsolved | 821 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 401 | 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 63.8% of the fleet | 3.99T | 28,805 |
| 2 | BManBJ 25.9% of the fleet | 1.62T | 12,126 |
| 3 | RickEdinson 6.6% of the fleet | 410.87B | 2,535 |
| 4 | MoNiKaMaDnEsS 3.7% of the fleet | 230.93B | 1,758 |
4 accounts · 6.25T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 27.6% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 17.5% of the fleet | 57.31T | 403,928 |
| 3 | tenzink 13.1% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 9.6% of the fleet | 31.40T | 228,002 |
| 5 | Torom 7.2% of the fleet | 23.48T | 167,251 |
| 6 | randomchampgamer 6.1% of the fleet | 19.85T | 140,897 |
| 7 | RickEdinson 4.7% of the fleet | 15.46T | 103,024 |
| 8 | JackIV 3.1% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.7% of the fleet | 8.77T | 60,417 |
| 10 | gannet 2.2% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 327.33T 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 19 20:34 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥30 · … Nc3 a4 e5 Kf7
deep line, ply ≥30 · … Nc3 a4 e5 Kf7 - Oct 19 20:34 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥30 · … Nc3 a4 e5 Kg7
deep line, ply ≥30 · … Nc3 a4 e5 Kg7 - Oct 19 20:32 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥30 · … Nc3 Ne8 Bc6 f3
deep line, ply ≥30 · … Nc3 Ne8 Bc6 f3 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥36 · … Qc2 fxg2 Qh7 Kf8
deep line, ply ≥36 · … Qc2 fxg2 Qh7 Kf8 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥35 · … g5 Qc2 fxg2 Qh7
deep line, ply ≥35 · … g5 Qc2 fxg2 Qh7 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥34 · … e5 g5 Qc2 fxg2
deep line, ply ≥34 · … e5 g5 Qc2 fxg2 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥33 · … f3 e5 g5 Qc2
deep line, ply ≥33 · … f3 e5 g5 Qc2 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥32 · … Bc6 f3 e5 g5
deep line, ply ≥32 · … Bc6 f3 e5 g5 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥31 · … Ne8 Bc6 f3 e5
deep line, ply ≥31 · … Ne8 Bc6 f3 e5 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥32 · … Bc6 f3 Qg5 Nf6
deep line, ply ≥32 · … Bc6 f3 Qg5 Nf6 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥31 · … Ne8 Bc6 f3 Qg5
deep line, ply ≥31 · … Ne8 Bc6 f3 Qg5 - Oct 19 20:32 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥36 · … hxg5 fxg2 Qg5 Kf8
deep line, ply ≥36 · … hxg5 fxg2 Qg5 Kf8