85.2M
positions
16.3M
practically solved
312.22T
engine nodes
2.4M
analyses
144
in queue
5
active workers
28
active cores
15.9M
nodes / sec
28.9
positions / min
111
proof number
4,659
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 111,367 closures, 2.44T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 210 open obligations, of which 39 (18.6%) 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 3.1m (median of 6) · measured at 2026-10-16 12:00 UTC
Closures by source, last 24h (111367 of 111367 labelled): USER 72.1% (80245) · FILL 1.6% (1763) · AUTO 26.3% (29305) · SOLVE 0.0% (0) · NONE 0.0% (54) · last 7d (840743 of 840743): USER 91.1% (765943) · FILL 0.7% (5616) · AUTO 8.2% (68691) · SOLVE 0.0% (0) · NONE 0.1% (493). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nf3 d6 2. Ng5 f6 … 14. h4 b6 15. d4 O-O-O 16. b5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f6 … 14. h4 b6 15. d4 O-O-O 16. a5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f6 … 14. h4 b6 15. d4 O-O-O 16. c3 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f6 … 23. Ra2 b5 24. Re2 e5 25. Rd1 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nh3 d5 2. Nc3 h6 … exd4 13. axb4 Rad8 14. O-O Rd7 (User) · 512.0M 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 | 1144 | 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 58.2% of the fleet | 1.42T | 15,489 |
| 2 | RickEdinson 17.4% of the fleet | 426.26B | 4,232 |
| 3 | MoNiKaMaDnEsS 15.3% of the fleet | 374.70B | 3,503 |
| 4 | randomchampgamer 9.0% of the fleet | 219.97B | 1,386 |
| 5 | NeoArcturus <0.1% of the fleet | 144.9M | 4 |
5 accounts · 2.44T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 28.9% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.7% of the fleet | 52.13T | 369,568 |
| 3 | tenzink 13.7% 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 4.5% of the fleet | 13.93T | 93,897 |
| 8 | JackIV 3.2% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.6% of the fleet | 8.22T | 56,311 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 312.26T 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 16 12:46 VALUE_CASCADEview
1. g3 e6 2. e3 Qh4 3. Nc3 Ba3 4. Qh5 a5
1. g3 e6 2. e3 Qh4 3. Nc3 Ba3 4. Qh5 a5 - Oct 16 12:46 VALUE_CASCADEview
1. e3 Nf6 2. Qh5 g6 … 5. Bb5 gxh5 6. b4 Qg5 7. c3
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 - Oct 16 12:46 Solved: BLACK_WIN via MINIMAXview
1. e3 Nf6 2. Qh5 g6 … 5. Bb5 gxh5 6. b4 Qg5 7. c3
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … 10. Nh3 Qd1 11. Kf2 Qe2 12. Kg1
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4 Qb5 9. d3 Qa4 10. Nh3 Qd1 11. Kf2 Qe2 12. Kg1 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … Qa4 10. Nh3 Qd1 11. Kf2 Qe2
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4 Qb5 9. d3 Qa4 10. Nh3 Qd1 11. Kf2 Qe2 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … 9. d3 Qa4 10. Nh3 Qd1 11. Kf2
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4 Qb5 9. d3 Qa4 10. Nh3 Qd1 11. Kf2 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … Qb5 9. d3 Qa4 10. Nh3 Qd1
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4 Qb5 9. d3 Qa4 10. Nh3 Qd1 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … 8. f4 Qb5 9. d3 Qa4 10. Nh3
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4 Qb5 9. d3 Qa4 10. Nh3 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … Bxb4 8. f4 Qb5 9. d3 Qa4
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4 Qb5 9. d3 Qa4 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … 7. c3 Bxb4 8. f4 Qb5 9. d3
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4 Qb5 9. d3 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … Qg5 7. c3 Bxb4 8. f4 Qb5
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4 Qb5 - Oct 16 12:46 Solved: BLACK_WIN via MATE_PVview
1. e3 Nf6 2. Qh5 g6 … 6. b4 Qg5 7. c3 Bxb4 8. f4
1. e3 Nf6 2. Qh5 g6 3. e4 e6 4. Bd3 Ng8 5. Bb5 gxh5 6. b4 Qg5 7. c3 Bxb4 8. f4