83.5M
positions
15.9M
practically solved
306.72T
engine nodes
2.3M
analyses
371
in queue
4
active workers
26
active cores
5.0M
nodes / sec
5.0
positions / min
85
proof number
4,551
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 118,019 closures, 3.97T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 216 open obligations, of which 41 (19.0%) 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 7.3m (median of 12) · measured at 2026-10-14 01:00 UTC
Closures by source, last 24h (118019 of 118019 labelled): USER 99.4% (117355) · FILL 0.5% (553) · AUTO 0.0% (16) · SOLVE 0.0% (0) · NONE 0.1% (95) · last 7d (1307339 of 1307339): USER 97.5% (1274340) · FILL 0.2% (3075) · AUTO 2.3% (29472) · SOLVE 0.0% (0) · NONE 0.0% (452). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nf3 f6 2. e4 d5 3. Nc3 Bg4 4. d4 g5 (User) · 10.00B nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Ne8 25. c5 Nc7 26. Rg1 h4 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … Ba6 12. Kh1 Nh6 13. Bg7 Qe7 (User) · 128.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. Nf3 f6 2. Nc3 c6 … 12. gxh3 Qf4 13. Qxf4 Nf6 14. Bxa5 (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 | 1111 | 2 | |
| g1h3 | unsolved | 753 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 395 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -78 | 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 35.5% of the fleet | 1.41T | 7,846 |
| 2 | Torom 32.6% of the fleet | 1.29T | 8,506 |
| 3 | randomchampgamer 13.5% of the fleet | 536.52B | 2,501 |
| 4 | RickEdinson 10.5% of the fleet | 414.54B | 2,368 |
| 5 | MoNiKaMaDnEsS 7.9% of the fleet | 314.75B | 1,844 |
5 accounts · 3.97T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.2% of the fleet | 49.74T | 343,403 |
| 3 | tenzink 14.0% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.2% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.1% of the fleet | 18.70T | 133,242 |
| 6 | Torom 5.1% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.2% of the fleet | 12.93T | 85,057 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.4% of the fleet | 7.30T | 49,090 |
| 10 | gannet 2.4% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 306.78T 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 14 01:54 Solved: WHITE_WIN via MINIMAXview
deep line, ply ≥48 · … Rg1 Nc7 c5 a4
deep line, ply ≥48 · … Rg1 Nc7 c5 a4 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥50 · … c5 a4 Nf3 b4
deep line, ply ≥50 · … c5 a4 Nf3 b4 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥49 · … Nc7 c5 a4 Nf3
deep line, ply ≥49 · … Nc7 c5 a4 Nf3 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥70 · … g3 Rxc8 Rc8 Kg7
deep line, ply ≥70 · … g3 Rxc8 Rc8 Kg7 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥69 · … f3 g3 Rxc8 Rc8
deep line, ply ≥69 · … f3 g3 Rxc8 Rc8 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥68 · … Bh7 f3 g3 Rxc8
deep line, ply ≥68 · … Bh7 f3 g3 Rxc8 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥67 · … Nxd4 Bh7 f3 g3
deep line, ply ≥67 · … Nxd4 Bh7 f3 g3 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥66 · … Qd3 Nxd4 Bh7 f3
deep line, ply ≥66 · … Qd3 Nxd4 Bh7 f3 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥65 · … e6 Qd3 Nxd4 Bh7
deep line, ply ≥65 · … e6 Qd3 Nxd4 Bh7 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥64 · … Bg8 e6 Qd3 Nxd4
deep line, ply ≥64 · … Bg8 e6 Qd3 Nxd4 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥63 · … Rd8 Bg8 e6 Qd3
deep line, ply ≥63 · … Rd8 Bg8 e6 Qd3 - Oct 14 01:54 Solved: WHITE_WIN via MATE_PVview
deep line, ply ≥62 · … c8=Q Rd8 Bg8 e6
deep line, ply ≥62 · … c8=Q Rd8 Bg8 e6