81.3M
positions
15.6M
practically solved
296.55T
engine nodes
2.3M
analyses
0
in queue
7
active workers
42
active cores
0
nodes / sec
3.8
positions / min
109
proof number
4,316
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 94,635 closures, 5.21T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 218 open obligations, of which 41 (18.8%) sit at or below dn 2, one unanswered question from falling over · 0 open nodes on impossible numbers · measured at 2026-10-11 06:00 UTC
Closures by source, last 24h (94630 of 94630 labelled): USER 94.5% (89401) · FILL 0.0% (30) · AUTO 5.4% (5145) · SOLVE 0.0% (0) · NONE 0.1% (54) · last 7d (1650430 of 1650430): USER 98.7% (1629625) · FILL 0.1% (2101) · AUTO 1.0% (17102) · SOLVE 0.0% (0) · NONE 0.1% (1602). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. e4 c6 2. Qh5 g6 3. Bb5 Nf6 4. g4 Nxg4 (Fill) · 32.0M nodes · RickEdinson-MSI-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 | 1068 | 2 | |
| g1h3 | unsolved | 821 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 387 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | -73 | 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 50.4% of the fleet | 2.62T | 18,593 |
| 2 | BManBJ 23.1% of the fleet | 1.20T | 6,700 |
| 3 | randomchampgamer 11.7% of the fleet | 607.85B | 2,688 |
| 4 | RickEdinson 7.5% of the fleet | 392.33B | 1,981 |
| 5 | MoNiKaMaDnEsS 7.3% of the fleet | 378.56B | 1,942 |
| 6 | soothdest <0.1% of the fleet | 25.3M | 4 |
6 accounts · 5.21T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 30.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.5% of the fleet | 46.00T | 319,123 |
| 3 | tenzink 14.4% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.6% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.0% of the fleet | 17.72T | 127,632 |
| 6 | Torom 4.0% of the fleet | 11.88T | 87,075 |
| 7 | RickEdinson 4.0% of the fleet | 11.76T | 77,514 |
| 8 | JackIV 3.4% of the fleet | 10.06T | 67,859 |
| 9 | gannet 2.4% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.3% of the fleet | 6.77T | 45,010 |
and 25 more.
35 accounts · 296.57T 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 · 17 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 11 06:49 Solved: BLACK_WIN via MINIMAXview
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. h3
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. h3 - Oct 11 06:49 Solved: BLACK_WIN via MINIMAXview
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. e5
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. e5 - Oct 11 06:49 Solved: BLACK_WIN via MATE_PVview
1. e3 c6 2. e4 g6 … 5. e5 Nf6 6. b4 Ne4 7. bxa5
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. e5 Nf6 6. b4 Ne4 7. bxa5 - Oct 11 06:49 Solved: BLACK_WIN via MATE_PVview
1. e3 c6 2. e4 g6 … Qa5 5. e5 Nf6 6. b4 Ne4
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. e5 Nf6 6. b4 Ne4 - Oct 11 06:49 Solved: BLACK_WIN via MATE_PVview
1. e3 c6 2. e4 g6 … 4. Nf3 Qa5 5. e5 Nf6 6. b4
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. e5 Nf6 6. b4 - Oct 11 06:49 Solved: BLACK_WIN via MATE_PVview
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. e5 Nf6
1. e3 c6 2. e4 g6 3. Qh5 gxh5 4. Nf3 Qa5 5. e5 Nf6 - Oct 11 06:49 Solved: WHITE_WIN via MINIMAXview
1. e4 e6 2. Qf3 Nf6 … c6 6. Qd4 d5 7. Qg7 Nh6
1. e4 e6 2. Qf3 Nf6 3. Qd1 g6 4. Qh5 Ng8 5. Qe5 c6 6. Qd4 d5 7. Qg7 Nh6 - Oct 11 06:49 Solved: BLACK_WIN via MATE_PVview
1. Nh3 e6 2. e3 Qg5 … 4. Ng1 Nh6 5. g4 Bb4 6. b3
1. Nh3 e6 2. e3 Qg5 3. Qh5 Qxh5 4. Ng1 Nh6 5. g4 Bb4 6. b3 - Oct 11 06:49 Solved: BLACK_WIN via MATE_PVview
1. Nh3 e6 2. e3 Qg5 … 4. Ng1 Nh6 5. g4 Bb4 6. a3
1. Nh3 e6 2. e3 Qg5 3. Qh5 Qxh5 4. Ng1 Nh6 5. g4 Bb4 6. a3 - Oct 11 06:49 Solved: WHITE_WIN via MINIMAXview
1. e3 d5 2. Bc4 f5 … g6 5. Qh4 Nf6 6. Qb4 Nd7
1. e3 d5 2. Bc4 f5 3. Bb5 Nc6 4. Qg4 g6 5. Qh4 Nf6 6. Qb4 Nd7 - Oct 11 06:49 Solved: WHITE_WIN via MATE_PVview
1. e3 d5 2. Bc4 f5 … Nf6 6. Qb4 Nd7 7. Qd6 Nb4
1. e3 d5 2. Bc4 f5 3. Bb5 Nc6 4. Qg4 g6 5. Qh4 Nf6 6. Qb4 Nd7 7. Qd6 Nb4 - Oct 11 06:49 Solved: WHITE_WIN via MATE_PVview
1. e3 d5 2. Bc4 f5 … 5. Qh4 Nf6 6. Qb4 Nd7 7. Qd6
1. e3 d5 2. Bc4 f5 3. Bb5 Nc6 4. Qg4 g6 5. Qh4 Nf6 6. Qb4 Nd7 7. Qd6