106.9M
positions
22.6M
practically solved
398.36T
engine nodes
3.0M
analyses
6,217
in queue
active workers
116
active cores
126.5M
nodes / sec
55.6
positions / min
118
proof number
4,004
disproof number
Root conquest: 0/20 first moves solved · 21.1% of tree positions solved · last 24h: 232,966 closures, 10.36T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 73 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 23s (median of 96) · measured at 2026-11-02 14:00 UTC
Closures by source, last 24h (232962 of 232966 labelled): USER 98.5% (229523) · FILL 1.0% (2446) · AUTO 0.4% (890) · SOLVE 0.0% (0) · NONE 0.0% (103) · last 7d (1274864 of 1274864): USER 98.2% (1251463) · FILL 0.8% (9950) · AUTO 1.0% (12927) · SOLVE 0.0% (0) · NONE 0.0% (524). 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. Nf3 d6 2. Ng5 f5 … 7. d5 g6 8. Nxd6 e6 9. Bb5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#0
- 1. e4 d6 2. Nh3 f5 … Kf8 11. Rc1 Kg8 12. O-O Bd7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. e4 d6 2. Nh3 f5 … Kf8 11. Rc1 Kg8 12. O-O Bb7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … 6. hxg4 h5 7. c3 g5 8. Bd3 (User) · 128.0M nodes · foxglove
- … (User) · 128.0M nodes · lavender
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 | 996 | 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 42.1% of the fleet | 4.36T | 32,343 |
| 2 | gannet 35.4% of the fleet | 3.67T | 26,857 |
| 3 | BManBJ 15.4% of the fleet | 1.59T | 6,604 |
| 4 | RickEdinson 4.3% of the fleet | 440.27B | 2,901 |
| 5 | MoNiKaMaDnEsS 2.7% of the fleet | 276.29B | 1,957 |
| 6 | soothdest 0.2% of the fleet | 17.20B | 117 |
6 accounts · 10.36T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 22.7% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.4% of the fleet | 81.13T | 541,284 |
| 3 | Torom 13.8% of the fleet | 54.91T | 395,865 |
| 4 | tenzink 10.7% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 7.9% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 21.93T | 143,906 |
| 7 | randomchampgamer 5.0% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.2% of the fleet | 12.88T | 89,080 |
| 9 | gannet 3.1% of the fleet | 12.52T | 85,493 |
| 10 | JackIV 2.5% of the fleet | 10.06T | 67,859 |
and 25 more.
35 accounts · 398.56T 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 14:33 SEEDEDview
…
… - Nov 02 14:33 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … g6 8. Nxd6 e6 9. Bb5 Nfd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 g6 8. Nxd6 e6 9. Bb5 Nfd7 - Nov 02 14:33 Solved: BLACK_WIN via MINIMAXview
…
… - Nov 02 14:33 Solved: WHITE_WIN via MATE_PVview
… Ke7
… Ke7 - Nov 02 14:33 Solved: WHITE_WIN via MATE_PVview
… Kg7
… Kg7 - Nov 02 14:33 SEEDEDview
…
… - Nov 02 14:33 SEEDEDview
…
… - Nov 02 14:33 SEEDEDview
…
… - Nov 02 14:33 SEEDEDview
…
… - Nov 02 14:33 SEEDEDview
…
… - Nov 02 14:33 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … g6 8. Nxd6 e6 9. Bb5 Bd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 g6 8. Nxd6 e6 9. Bb5 Bd7 - Nov 02 14:33 Solved: BLACK_WIN via MATE_PVview
… h5 Qa1 Qb1 Rf6 Qxa1 c5 e4 Ra6 Rxg4 Rf6 c4 Rf1 Ke2 d1=Q Ke3
… h5 Qa1 Qb1 Rf6 Qxa1 c5 e4 Ra6 Rxg4 Rf6 c4 Rf1 Ke2 d1=Q Ke3