84.6M
positions
16.2M
practically solved
310.74T
engine nodes
2.4M
analyses
0
in queue
5
active workers
28
active cores
0
nodes / sec
52.6
positions / min
134
proof number
4,616
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 148,880 closures, 2.59T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 212 open obligations, of which 40 (18.9%) 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 1.8m (median of 11) · measured at 2026-10-15 20:00 UTC
Closures by source, last 24h (148875 of 148875 labelled): USER 79.8% (118796) · FILL 2.0% (2925) · AUTO 18.2% (27088) · SOLVE 0.0% (0) · NONE 0.0% (66) · last 7d (917426 of 917428): USER 94.6% (867728) · FILL 0.5% (4583) · AUTO 4.9% (44636) · SOLVE 0.0% (0) · NONE 0.1% (479). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. e3 c6 2. Qg4 e6 … 4. Qh6 Bxh6 5. Nh3 Qh4 6. c4 (Auto) · 8.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … 10. d4 Qf8 11. h3 Nh6 12. b3 (User) · 128.0M 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 | 1130 | 2 | |
| g1h3 | unsolved | 763 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 400 | 2 | |
| e2e4 | unsolved | 400 | 2 | |
| b1c3 | unsolved | 138 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -65 | 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 | BManBJ 48.8% of the fleet | 1.26T | 13,183 |
| 2 | randomchampgamer 23.1% of the fleet | 598.37B | 5,286 |
| 3 | RickEdinson 16.3% of the fleet | 421.85B | 4,033 |
| 4 | MoNiKaMaDnEsS 11.8% of the fleet | 305.10B | 2,484 |
| 5 | NeoArcturus <0.1% of the fleet | 144.9M | 4 |
5 accounts · 2.59T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.0% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.5% of the fleet | 51.20T | 357,722 |
| 3 | tenzink 13.8% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.1% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.4% of the fleet | 19.85T | 140,897 |
| 6 | Torom 5.0% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.4% of the fleet | 13.66T | 90,595 |
| 8 | JackIV 3.2% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.6% of the fleet | 8.02T | 53,934 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 310.85T 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
- Oct 15 21:03 Solved: WHITE_WIN via MINIMAXview
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … Qa3 6. Qb5 Nc6 7. Ne5 Nxe5
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Qb5 Nc6 7. Ne5 Nxe5 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … 5. Nc3 Qa3 6. Qb5 Nc6 7. Ne5
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Qb5 Nc6 7. Ne5 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … Qb4 5. Nc3 Qa3 6. Qb5 Nc6
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Qb5 Nc6 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … 4. g3 Qb4 5. Nc3 Qa3 6. Qb5
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Qb5 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … Qa3 6. Bb5 c6 7. Ne5 gxh5
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Bb5 c6 7. Ne5 gxh5 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … 5. Nc3 Qa3 6. Bb5 c6 7. Ne5
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Bb5 c6 7. Ne5 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … Qb4 5. Nc3 Qa3 6. Bb5 c6
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Bb5 c6 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … 4. g3 Qb4 5. Nc3 Qa3 6. Bb5
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Bb5 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … Qb4 5. Nc3 Qa3 6. Ne5 gxh5
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Ne5 gxh5 - Oct 15 21:03 Solved: WHITE_WIN via MATE_PVview
1. e3 e6 2. Qh5 g6 … 4. g3 Qb4 5. Nc3 Qa3 6. Ne5
1. e3 e6 2. Qh5 g6 3. Nf3 Qh4 4. g3 Qb4 5. Nc3 Qa3 6. Ne5 - Oct 15 21:03 Solved: BLACK_WIN via MATE_PVview
1. b3 e6 2. e4 g6 3. Qh5 gxh5 4. d4 Bb4 5. Bd2
1. b3 e6 2. e4 g6 3. Qh5 gxh5 4. d4 Bb4 5. Bd2