92.0M
positions
18.2M
practically solved
337.07T
engine nodes
2.5M
analyses
1,932
in queue
6
active workers
34
active cores
0
nodes / sec
17.2
positions / min
143
proof number
4,658
disproof number
Root conquest: 0/20 first moves solved · 19.8% of tree positions solved · last 24h: 836,400 closures, 7.40T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 206 open obligations, of which 37 (18.0%) 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 7.2m (median of 60) · measured at 2026-10-21 13:00 UTC
Closures by source, last 24h (836170 of 836324 labelled): USER 99.7% (833784) · FILL 0.2% (1963) · AUTO 0.0% (320) · SOLVE 0.0% (0) · NONE 0.0% (103) · last 7d (2062654 of 2062730): USER 96.0% (1981068) · FILL 0.5% (11166) · AUTO 3.3% (67528) · SOLVE 0.0% (0) · NONE 0.1% (2892). 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 ≥32 · … e5 dxe5 Bxd7 Ra7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- deep line, ply ≥32 · … e5 dxe5 Bxd7 e6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … 10. Bg5 e6 11. Qxb7 Kf8 12. h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- deep line, ply ≥32 · … e5 dxe5 Bxd7 Ra6 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … Rh8 24. Rhf1 Bh6 25. d5 Nd8 (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 | 1098 | 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 | 4.65T | 34,363 |
| 2 | BManBJ 25.6% of the fleet | 1.90T | 14,522 |
| 3 | RickEdinson 6.7% of the fleet | 494.60B | 2,810 |
| 4 | MoNiKaMaDnEsS 4.8% of the fleet | 353.34B | 2,440 |
4 accounts · 7.40T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 26.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 17.9% of the fleet | 60.49T | 427,980 |
| 3 | tenzink 12.7% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 9.3% of the fleet | 31.40T | 228,002 |
| 5 | Torom 8.5% of the fleet | 28.74T | 205,385 |
| 6 | randomchampgamer 5.9% of the fleet | 19.85T | 140,897 |
| 7 | RickEdinson 4.8% of the fleet | 16.28T | 107,851 |
| 8 | JackIV 3.0% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.8% of the fleet | 9.29T | 63,897 |
| 10 | gannet 2.1% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 337.13T 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 13:33 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥32 · … e5 dxe5 Bxd7 Rc8
deep line, ply ≥32 · … e5 dxe5 Bxd7 Rc8 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥48 · … Kd2 f3 Rc1 fxg2
deep line, ply ≥48 · … Kd2 f3 Rc1 fxg2 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥47 · … Kh8 Kd2 f3 Rc1
deep line, ply ≥47 · … Kh8 Kd2 f3 Rc1 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥46 · … Rg7 Kh8 Kd2 f3
deep line, ply ≥46 · … Rg7 Kh8 Kd2 f3 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥45 · … Kh7 Rg7 Kh8 Kd2
deep line, ply ≥45 · … Kh7 Rg7 Kh8 Kd2 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥44 · … Rg8 Kh7 Rg7 Kh8
deep line, ply ≥44 · … Rg8 Kh7 Rg7 Kh8 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥43 · … Kg7 Rg8 Kh7 Rg7
deep line, ply ≥43 · … Kg7 Rg8 Kh7 Rg7 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥42 · … Rc8 Kg7 Rg8 Kh7
deep line, ply ≥42 · … Rc8 Kg7 Rg8 Kh7 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥41 · … g5 Rc8 Kg7 Rg8
deep line, ply ≥41 · … g5 Rc8 Kg7 Rg8 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥40 · … Rc1 g5 Rc8 Kg7
deep line, ply ≥40 · … Rc1 g5 Rc8 Kg7 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥39 · … Rxc4 Rc1 g5 Rc8
deep line, ply ≥39 · … Rxc4 Rc1 g5 Rc8 - Oct 21 13:33 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥38 · … Nxb5 Rxc4 Rc1 g5
deep line, ply ≥38 · … Nxb5 Rxc4 Rc1 g5