108.7M
positions
23.0M
practically solved
405.97T
engine nodes
3.0M
analyses
4,834
in queue
active workers
132
active cores
145.3M
nodes / sec
63.4
positions / min
118
proof number
4,004
disproof number
Root conquest: 0/20 first moves solved · 21.2% of tree positions solved · last 24h: 565,495 closures, 11.97T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 194 open obligations, of which 35 (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 1.9m (median of 19) · measured at 2026-11-03 05:00 UTC
Closures by source, last 24h (565495 of 565495 labelled): USER 100.0% (565310) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (185) · last 7d (1676787 of 1676787): USER 99.0% (1660512) · FILL 0.5% (9185) · AUTO 0.4% (6448) · SOLVE 0.0% (0) · NONE 0.0% (642). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing all workers
- … fxg5 Bg5 d5 Be7 Kd7 g4 Kc8 h4 a5 b4 (User) · 128.0M nodes · bluebird
- 1. e4 d6 2. Nh3 f5 … O-O 13. dxc6 Kh8 14. f4 Bg7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 f6 2. e4 e6 … Nh6 17. a4 g5 18. Ng6 hxg6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- … fxg5 Bg5 g6 Be7 Bg7 g4 Bd7 a4 Rc8 h4 h5 O-O d5 Bf8 Bf6 Rfe1 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- … fxg5 Bg5 g6 Be7 Bg7 g4 Bd7 a4 Rc8 h4 h5 O-O d5 Bf8 Bf6 Rfe1 Bd8 (User) · 128.0M 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 | 1261 | 2 | |
| g1h3 | unsolved | 749 | 2 | |
| d2d4 | unsolved | 443 | 2 | |
| e2e3 | unsolved | 437 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| b1c3 | unsolved | 159 | 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 46.0% of the fleet | 5.51T | 42,181 |
| 2 | gannet 33.6% of the fleet | 4.03T | 31,319 |
| 3 | BManBJ 13.2% of the fleet | 1.58T | 6,691 |
| 4 | RickEdinson 3.8% of the fleet | 458.99B | 3,238 |
| 5 | MoNiKaMaDnEsS 3.2% of the fleet | 382.00B | 2,850 |
| 6 | rookgamestrategy 0.1% of the fleet | 17.28B | 81 |
6 accounts · 11.97T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 22.2% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.2% of the fleet | 82.17T | 545,809 |
| 3 | Torom 14.4% of the fleet | 58.44T | 423,172 |
| 4 | tenzink 10.5% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 7.7% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 22.22T | 146,006 |
| 7 | randomchampgamer 4.9% of the fleet | 19.85T | 140,897 |
| 8 | gannet 3.7% of the fleet | 15.19T | 106,167 |
| 9 | MoNiKaMaDnEsS 3.2% of the fleet | 13.14T | 91,057 |
| 10 | JackIV 2.5% of the fleet | 10.06T | 67,859 |
and 26 more.
36 accounts · 406.37T 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 05:52 Solved: BLACK_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Be3 Kh1 Bf5 Rae1 Bf2 Re3 h5 a4 Rc8 c4 Be4 a5
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Be3 Kh1 Bf5 Rae1 Bf2 Re3 h5 a4 Rc8 c4 Be4 a5 - Nov 03 05:52 Solved: BLACK_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Be3 Kh1 Bf5 Rae1 Bf2 Re3 h5 a4 Rc8 c4 Be4 b4
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Be3 Kh1 Bf5 Rae1 Bf2 Re3 h5 a4 Rc8 c4 Be4 b4 - Nov 03 05:52 Solved: BLACK_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Be3 Kh1 Bf5 Rae1 Bf2 Re3 h5 a4 Rc8 c4 Be4 h3
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Be3 Kh1 Bf5 Rae1 Bf2 Re3 h5 a4 Rc8 c4 Be4 h3 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 Bb6 Kc8 Rd8 Kb7
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 Bb6 Kc8 Rd8 Kb7 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 Bb6 Kc8 Rd8
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 Bb6 Kc8 Rd8 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 Bb6 Kc8
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 Bb6 Kc8 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 Bb6
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 Bb6 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 Kb7 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 Rd7 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 Kc8 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8 Bc7 - Nov 03 05:52 Solved: WHITE_WIN via MATE_PVview
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8
… fxg5 Bg5 g6 Be7 Bh6 f4 exf4 O-O Bh3 gxh3 Be3 Kh1 Bg1 h3 Bf2 Rxf2 d5 Re1 Kd7 Bd6 b5 Re7 Kd8