107.3M
positions
22.7M
practically solved
399.83T
engine nodes
3.0M
analyses
5,597
in queue
active workers
132
active cores
143.4M
nodes / sec
71.7
positions / min
118
proof number
4,004
disproof number
Root conquest: 0/20 first moves solved · 21.1% of tree positions solved · last 24h: 308,392 closures, 11.09T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 72 over 198 open obligations, of which 35 (17.7%) 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 2.8m (median of 37) · measured at 2026-11-02 17:00 UTC
Closures by source, last 24h (308329 of 308329 labelled): USER 98.9% (305053) · FILL 0.7% (2262) · AUTO 0.3% (890) · SOLVE 0.0% (0) · NONE 0.0% (124) · last 7d (1369427 of 1369490): USER 98.3% (1346001) · FILL 0.7% (9950) · AUTO 0.9% (12927) · SOLVE 0.0% (0) · NONE 0.0% (549). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing all workers
- 1. e4 d6 2. Nh3 f5 … Bh6 13. c4 Ng4 14. Bxf4 Bc1 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. e4 d6 2. Nh3 f5 … Bh6 13. c4 Ng4 14. Bxf4 dxe5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. e4 d6 2. Nh3 f5 … Bh6 13. c4 Ng4 14. Bxf4 e6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. e4 d6 2. Nh3 f5 … Bh6 13. c4 Ng4 14. Bxf4 bxc4 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … b4 14. g3 Ba6 15. Bd2 g5 (User) · 128.0M nodes · daybreak
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 | 1111 | 2 | |
| g1h3 | unsolved | 748 | 2 | |
| d2d4 | unsolved | 443 | 2 | |
| e2e3 | unsolved | 437 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| b1c3 | unsolved | 142 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -59 | 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 | 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 46.0% of the fleet | 5.10T | 37,910 |
| 2 | gannet 33.5% of the fleet | 3.72T | 27,511 |
| 3 | BManBJ 14.0% of the fleet | 1.56T | 6,455 |
| 4 | RickEdinson 4.0% of the fleet | 447.50B | 3,056 |
| 5 | MoNiKaMaDnEsS 2.5% of the fleet | 275.62B | 2,031 |
5 accounts · 11.09T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 22.6% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.3% of the fleet | 81.31T | 542,041 |
| 3 | Torom 13.9% of the fleet | 55.64T | 401,430 |
| 4 | tenzink 10.7% 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 | 22.00T | 144,391 |
| 7 | randomchampgamer 5.0% of the fleet | 19.85T | 140,897 |
| 8 | gannet 3.3% of the fleet | 13.05T | 89,300 |
| 9 | MoNiKaMaDnEsS 3.2% of the fleet | 12.96T | 89,719 |
| 10 | JackIV 2.5% of the fleet | 10.06T | 67,859 |
and 25 more.
35 accounts · 400.16T 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 02 17:43 Solved: DRAW via TBview
…
… - Nov 02 17:43 SEEDEDview
…
… - Nov 02 17:43 Solved: WHITE_WIN via TBview
…
… - Nov 02 17:43 Solved: BLACK_WIN via TBview
…
… - Nov 02 17:43 Solved: BLACK_WIN via TBview
…
… - Nov 02 17:43 SEEDEDview
…
… - Nov 02 17:43 Solved: BLACK_WIN via MATE_PVview
… Bg5 Bxg5 Qh4 Kd2 Qf2 Kc1
… Bg5 Bxg5 Qh4 Kd2 Qf2 Kc1 - Nov 02 17:43 Solved: BLACK_WIN via MATE_PVview
… Bg5 Bxg5 Qh4 Kd2 Qf2
… Bg5 Bxg5 Qh4 Kd2 Qf2 - Nov 02 17:43 Solved: BLACK_WIN via MATE_PVview
… Bg5 Bxg5 Qh4 Kd2
… Bg5 Bxg5 Qh4 Kd2 - Nov 02 17:43 Solved: BLACK_WIN via MATE_PVview
… Bg5 Bxg5 Qh4 Kc1 Qe1 Nd1
… Bg5 Bxg5 Qh4 Kc1 Qe1 Nd1 - Nov 02 17:43 Solved: BLACK_WIN via MATE_PVview
… Bg5 Bxg5 Qh4 Kc1 Qe1
… Bg5 Bxg5 Qh4 Kc1 Qe1 - Nov 02 17:43 Solved: BLACK_WIN via MATE_PVview
… Bg5 Bxg5 Qh4 Kc1
… Bg5 Bxg5 Qh4 Kc1