86.3M
positions
16.4M
practically solved
318.14T
engine nodes
2.4M
analyses
364
in queue
13
active workers
60
active cores
12.5M
nodes / sec
34.4
positions / min
145
proof number
4,661
disproof number
Root conquest: 0/20 first moves solved · 19.0% of tree positions solved · last 24h: 78,196 closures, 4.40T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 208 open obligations, of which 38 (18.3%) 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 2.1m (median of 153) · measured at 2026-10-18 07:00 UTC
Closures by source, last 24h (78196 of 78196 labelled): USER 95.1% (74396) · FILL 0.7% (522) · AUTO 4.1% (3199) · SOLVE 0.0% (0) · NONE 0.1% (79) · last 7d (678339 of 678339): USER 88.0% (596640) · FILL 1.1% (7136) · AUTO 10.9% (74032) · SOLVE 0.0% (0) · NONE 0.1% (531). 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 ≥22 · … c3 Kg8 Nd2 f3 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- deep line, ply ≥22 · … c3 Kg8 Nd2 g5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- deep line, ply ≥22 · … c3 Kg8 Nd2 h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … Nh6 17. b4 h4 18. b5 Ng4 (User) · 128.0M nodes · Torom-torsten-pc-atomicdb#0
- 1. Nf3 f6 2. e4 e6 … Bd6 15. Kh1 Ra4 16. g3 Bf4 (User) · 128.0M nodes · Torom-torsten-pc-atomicdb#1
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 | 1114 | 2 | |
| g1h3 | unsolved | 821 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 400 | 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 50.5% of the fleet | 2.22T | 14,468 |
| 2 | BManBJ 37.3% of the fleet | 1.64T | 8,142 |
| 3 | RickEdinson 10.8% of the fleet | 476.85B | 2,432 |
| 4 | MoNiKaMaDnEsS 1.4% of the fleet | 61.81B | 458 |
| 5 | soothdest <0.1% of the fleet | 256.7M | 3 |
5 accounts · 4.40T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 28.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 17.2% of the fleet | 54.79T | 385,098 |
| 3 | tenzink 13.5% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 9.9% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.2% of the fleet | 19.85T | 140,897 |
| 6 | Torom 5.6% of the fleet | 17.91T | 127,822 |
| 7 | RickEdinson 4.6% of the fleet | 14.79T | 98,885 |
| 8 | JackIV 3.2% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.7% of the fleet | 8.54T | 58,659 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 318.31T 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 18 07:43 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥22 · … c3 Kg8 Nd2 Nxe4
deep line, ply ≥22 · … c3 Kg8 Nd2 Nxe4 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥32 · … Qe5 Kf8 Qg7 Ke8
deep line, ply ≥32 · … Qe5 Kf8 Qg7 Ke8 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥31 · … Kg7 Qe5 Kf8 Qg7
deep line, ply ≥31 · … Kg7 Qe5 Kf8 Qg7 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥30 · … Bxe8 Kg7 Qe5 Kf8
deep line, ply ≥30 · … Bxe8 Kg7 Qe5 Kf8 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥29 · … Re8 Bxe8 Kg7 Qe5
deep line, ply ≥29 · … Re8 Bxe8 Kg7 Qe5 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥28 · … dxe5 Re8 Bxe8 Kg7
deep line, ply ≥28 · … dxe5 Re8 Bxe8 Kg7 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥27 · … e5 dxe5 Re8 Bxe8
deep line, ply ≥27 · … e5 dxe5 Re8 Bxe8 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥26 · … Qe2 e5 dxe5 Re8
deep line, ply ≥26 · … Qe2 e5 dxe5 Re8 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥25 · … Nxe4 Qe2 e5 dxe5
deep line, ply ≥25 · … Nxe4 Qe2 e5 dxe5 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥24 · … Nd2 Nxe4 Qe2 e5
deep line, ply ≥24 · … Nd2 Nxe4 Qe2 e5 - Oct 18 07:43 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥23 · … Kg8 Nd2 Nxe4 Qe2
deep line, ply ≥23 · … Kg8 Nd2 Nxe4 Qe2 - Oct 18 07:43 Solved: BLACK_WIN via MATE_PVview
deep line, ply ≥23 · … Kg8 Nd2 Ng4 b3
deep line, ply ≥23 · … Kg8 Nd2 Ng4 b3