82.7M
positions
15.8M
practically solved
302.76T
engine nodes
2.3M
analyses
2,720
in queue
4
active workers
28
active cores
0
nodes / sec
8.1
positions / min
85
proof number
4,552
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 71,628 closures, 3.46T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 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 3.1m (median of 10) · measured at 2026-10-13 01:00 UTC
Closures by source, last 24h (71673 of 71674 labelled): USER 98.8% (70787) · FILL 0.3% (240) · AUTO 0.8% (598) · SOLVE 0.0% (0) · NONE 0.1% (48) · last 7d (1445242 of 1445242): USER 97.7% (1412597) · FILL 0.2% (2747) · AUTO 2.0% (29481) · SOLVE 0.0% (0) · NONE 0.0% (417). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nf3 d6 2. Ng5 f5 … b5 21. Qa6 Nf8 22. Nf3 Rb8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … b4 14. a3 Nb6 15. Be7 Bh6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … b5 21. Qa6 Nf8 22. Nf3 Nh7 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … 8. Nb5 cxb5 9. Nxh7 b5 10. Bh6 (User) · 128.0M 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 | 1128 | 2 | |
| g1h3 | unsolved | 753 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 393 | 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 44.5% of the fleet | 1.54T | 10,621 |
| 2 | BManBJ 37.9% of the fleet | 1.31T | 8,015 |
| 3 | RickEdinson 12.5% of the fleet | 431.84B | 2,702 |
| 4 | MoNiKaMaDnEsS 5.1% of the fleet | 177.64B | 1,215 |
4 accounts · 3.46T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.0% of the fleet | 48.34T | 335,613 |
| 3 | tenzink 14.1% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.4% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.0% of the fleet | 18.16T | 130,741 |
| 6 | Torom 4.8% of the fleet | 14.40T | 104,848 |
| 7 | RickEdinson 4.1% of the fleet | 12.51T | 82,708 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | gannet 2.4% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.3% of the fleet | 6.98T | 47,246 |
and 25 more.
35 accounts · 302.83T 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 13 02:04 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥40 · … Qa6 Nf8 Nf3 Nd7
deep line, ply ≥40 · … Qa6 Nf8 Nf3 Nd7 - Oct 13 02:04 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥40 · … Qa6 Nf8 Nf3 e6
deep line, ply ≥40 · … Qa6 Nf8 Nf3 e6 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥52 · … Qc7 Rf7 Nxf7 a5
deep line, ply ≥52 · … Qc7 Rf7 Nxf7 a5 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥51 · … Rf8 Qc7 Rf7 Nxf7
deep line, ply ≥51 · … Rf8 Qc7 Rf7 Nxf7 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥50 · … Qd6 Rf8 Qc7 Rf7
deep line, ply ≥50 · … Qd6 Rf8 Qc7 Rf7 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥49 · … Rc8 Qd6 Rf8 Qc7
deep line, ply ≥49 · … Rc8 Qd6 Rf8 Qc7 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥48 · … Ng5 Rc8 Qd6 Rf8
deep line, ply ≥48 · … Ng5 Rc8 Qd6 Rf8 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥47 · … Rd8 Ng5 Rc8 Qd6
deep line, ply ≥47 · … Rd8 Ng5 Rc8 Qd6 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥46 · … Bxd7 Rd8 Ng5 Rc8
deep line, ply ≥46 · … Bxd7 Rd8 Ng5 Rc8 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥45 · … Nd7 Bxd7 Rd8 Ng5
deep line, ply ≥45 · … Nd7 Bxd7 Rd8 Ng5 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥44 · … a4 Nd7 Bxd7 Rd8
deep line, ply ≥44 · … a4 Nd7 Bxd7 Rd8 - Oct 13 02:04 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥43 · … e6 a4 Nd7 Bxd7
deep line, ply ≥43 · … e6 a4 Nd7 Bxd7