108.0M
positions
22.8M
practically solved
403.39T
engine nodes
3.0M
analyses
6,098
in queue
active workers
132
active cores
133.2M
nodes / sec
60.9
positions / min
118
proof number
4,004
disproof number
Root conquest: 0/20 first moves solved · 21.2% of tree positions solved · last 24h: 406,311 closures, 11.73T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 196 open obligations, of which 35 (17.9%) 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 10.7h (median of 103) · measured at 2026-11-03 00:00 UTC
Closures by source, last 24h (406252 of 406274 labelled): USER 100.0% (406107) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (145) · last 7d (1498388 of 1498425): USER 98.9% (1482170) · FILL 0.6% (9185) · AUTO 0.4% (6448) · SOLVE 0.0% (0) · NONE 0.0% (585). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing all workers
- … b5 Qa5 Ba6 Qb4 c5 (User) · 128.0M nodes · bluebird
- 1. Nf3 d6 2. Ng5 f5 … Nd7 14. d5 Bg7 15. dxc6 Bh8 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 d6 2. Ng5 f5 … Nd7 14. d5 Bg7 15. dxc6 Ra7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Nd7 14. d5 Bg7 15. dxc6 Bb7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … Nd7 14. d5 Bg7 15. dxc6 Rb8 (User) · 512.0M nodes · BManBJ-Laptop-Blake-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 | 1239 | 2 | |
| g1h3 | unsolved | 749 | 2 | |
| d2d4 | unsolved | 443 | 2 | |
| e2e3 | unsolved | 437 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| b1c3 | unsolved | 167 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -59 | 3 | |
| h2h3 | unsolved | -97 | 3 | |
| d2d3 | unsolved | -98 | 2 | |
| a2a3 | unsolved | -100 | 2 | |
| f2f3 | unsolved | -117 | 3 | |
| b2b3 | unsolved | -144 | 1 | |
| f2f4 | unsolved | -260 | 3 | |
| h2h4 | unsolved | -500 | 3 | |
| a2a4 | unsolved | -514 | 2 | |
| g2g4 | unsolved | -604 | 3 | |
| 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 47.2% of the fleet | 5.54T | 42,214 |
| 2 | gannet 33.2% of the fleet | 3.89T | 29,934 |
| 3 | BManBJ 13.3% of the fleet | 1.56T | 6,511 |
| 4 | RickEdinson 3.8% of the fleet | 444.47B | 3,129 |
| 5 | MoNiKaMaDnEsS 2.4% of the fleet | 285.78B | 2,111 |
| 6 | rookgamestrategy 0.1% of the fleet | 12.67B | 72 |
6 accounts · 11.73T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 22.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.3% of the fleet | 81.81T | 544,162 |
| 3 | Torom 14.2% of the fleet | 57.35T | 414,699 |
| 4 | tenzink 10.6% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 7.8% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 22.13T | 145,294 |
| 7 | randomchampgamer 4.9% of the fleet | 19.85T | 140,897 |
| 8 | gannet 3.5% of the fleet | 14.29T | 98,800 |
| 9 | MoNiKaMaDnEsS 3.2% of the fleet | 12.97T | 89,799 |
| 10 | JackIV 2.5% of the fleet | 10.06T | 67,859 |
and 26 more.
36 accounts · 403.75T 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
- Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… Rc1 Qd1 Kf2
… Rc1 Qd1 Kf2 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… Rc1 Qd1
… Rc1 Qd1 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… Rc1
… Rc1 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… Kf1 Qc2 Ke1
… Kf1 Qc2 Ke1 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… Kf1 Qc2
… Kf1 Qc2 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… Kf1
… Kf1 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… O-O Qc2 exd6
… O-O Qc2 exd6 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… O-O Qc2
… O-O Qc2 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… O-O
… O-O - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… f4 Qc2 Bxd6
… f4 Qc2 Bxd6 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… f4 Qc2
… f4 Qc2 - Nov 03 00:48 Solved: BLACK_WIN via MATE_PVview
… f4
… f4