84.1M
positions
16.1M
practically solved
308.82T
engine nodes
2.3M
analyses
74
in queue
6
active workers
34
active cores
15.0M
nodes / sec
8.5
positions / min
124
proof number
4,475
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 91,924 closures, 1.76T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 216 open obligations, of which 40 (18.5%) 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 4.4m (median of 17) · measured at 2026-10-15 04:00 UTC
Closures by source, last 24h (91924 of 91924 labelled): USER 87.6% (80482) · FILL 1.4% (1332) · AUTO 10.9% (9994) · SOLVE 0.0% (0) · NONE 0.1% (116) · last 7d (906231 of 906231): USER 95.2% (862613) · FILL 0.4% (3658) · AUTO 4.4% (39466) · SOLVE 0.0% (0) · NONE 0.1% (494). 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. e4 e6 … Nf6 16. a5 dxe4 17. Bb2 h5 (User) · 2.00B nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Kh8 21. c4 Ng5 22. c5 a5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Kh8 21. c4 Ng5 22. c5 Nf7 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Kh8 21. c4 Ng5 22. c5 f3 (User) · 512.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. d4 Nh6 2. f3 d5 … Qd7 8. e4 Qg4 9. Qxg4 e6 (User) · 10.00B 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 | 1084 | 2 | |
| g1h3 | unsolved | 703 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 395 | 2 | |
| b1c3 | unsolved | 127 | 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 | randomchampgamer 38.1% of the fleet | 669.58B | 4,242 |
| 2 | RickEdinson 21.8% of the fleet | 382.99B | 2,734 |
| 3 | MoNiKaMaDnEsS 20.4% of the fleet | 358.65B | 1,901 |
| 4 | BManBJ 19.7% of the fleet | 346.75B | 4,743 |
4 accounts · 1.76T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.2% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.3% of the fleet | 50.26T | 349,227 |
| 3 | tenzink 13.9% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.2% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.3% of the fleet | 19.44T | 137,629 |
| 6 | Torom 5.1% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.3% of the fleet | 13.36T | 88,141 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.5% of the fleet | 7.71T | 51,450 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 308.89T 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 15 04:44 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥40 · … c4 Ng5 c5 Kg7
deep line, ply ≥40 · … c4 Ng5 c5 Kg7 - Oct 15 04:44 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥40 · … c4 Ng5 c5 Re8
deep line, ply ≥40 · … c4 Ng5 c5 Re8 - Oct 15 04:44 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥40 · … c4 Ng5 c5 Rc8
deep line, ply ≥40 · … c4 Ng5 c5 Rc8 - Oct 15 04:44 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥40 · … c4 Ng5 c5 Rxd7
deep line, ply ≥40 · … c4 Ng5 c5 Rxd7 - Oct 15 04:44 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥54 · … Qh4 Nxd4 Qh7 Kf8
deep line, ply ≥54 · … Qh4 Nxd4 Qh7 Kf8 - Oct 15 04:44 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥53 · … Kg8 Qh4 Nxd4 Qh7
deep line, ply ≥53 · … Kg8 Qh4 Nxd4 Qh7 - Oct 15 04:44 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥52 · … Qg4 Kg8 Qh4 Nxd4
deep line, ply ≥52 · … Qg4 Kg8 Qh4 Nxd4 - Oct 15 04:44 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥51 · … Ne6 Qg4 Kg8 Qh4
deep line, ply ≥51 · … Ne6 Qg4 Kg8 Qh4 - Oct 15 04:44 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥50 · … Nxf3 Ne6 Qg4 Kg8
deep line, ply ≥50 · … Nxf3 Ne6 Qg4 Kg8 - Oct 15 04:44 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥49 · … f3 Nxf3 Ne6 Qg4
deep line, ply ≥49 · … f3 Nxf3 Ne6 Qg4 - Oct 15 04:44 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥48 · … gxh5 f3 Nxf3 Ne6
deep line, ply ≥48 · … gxh5 f3 Nxf3 Ne6 - Oct 15 04:44 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥47 · … Nc7 gxh5 f3 Nxf3
deep line, ply ≥47 · … Nc7 gxh5 f3 Nxf3