85.0M
positions
16.2M
practically solved
311.91T
engine nodes
2.4M
analyses
0
in queue
6
active workers
36
active cores
15.4M
nodes / sec
11.2
positions / min
139
proof number
4,659
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 133,251 closures, 2.61T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 211 open obligations, of which 40 (19.0%) sit at or below dn 2, one unanswered question from falling over · 0 open nodes on impossible numbers · measured at 2026-10-16 08:00 UTC
Closures by source, last 24h (133251 of 133251 labelled): USER 79.9% (106484) · FILL 1.7% (2209) · AUTO 18.4% (24497) · SOLVE 0.0% (0) · NONE 0.0% (61) · last 7d (852862 of 852862): USER 92.7% (790740) · FILL 0.6% (5400) · AUTO 6.6% (56232) · SOLVE 0.0% (0) · NONE 0.1% (490). 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 e6 … d6 8. h3 b6 9. Bh6 Nxh6 (Auto) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … d6 8. h3 a5 9. e5 fxe5 (Auto) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. Ne5 fxe5 … Nf6 11. h4 a6 12. Qe2 Kd8 (Fill) · 2.00B nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … 9. Kh1 Ne7 10. c3 Qa5 11. Nh4 (Auto) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … d6 8. h3 a5 9. e5 dxe5 (Auto) · 128.0M nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-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 | 1125 | 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 54.9% of the fleet | 1.43T | 13,451 |
| 2 | RickEdinson 16.4% of the fleet | 428.72B | 3,890 |
| 3 | MoNiKaMaDnEsS 16.4% of the fleet | 426.37B | 3,575 |
| 4 | randomchampgamer 12.3% of the fleet | 319.47B | 2,490 |
| 5 | NeoArcturus <0.1% of the fleet | 144.9M | 4 |
5 accounts · 2.61T 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 16.6% of the fleet | 51.91T | 364,743 |
| 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 4.4% of the fleet | 13.86T | 92,693 |
| 8 | JackIV 3.2% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.6% of the fleet | 8.20T | 55,532 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 311.94T 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 08:32 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Nf6 12. d7 Ke7 13. Qd6 Kf7
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Nf6 12. d7 Ke7 13. Qd6 Kf7 - Oct 16 08:32 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 11. d6 Nf6 12. d7 Ke7 13. Qd6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Nf6 12. d7 Ke7 13. Qd6 - Oct 16 08:32 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … e6 11. d6 Nf6 12. d7 Ke7
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 e6 11. d6 Nf6 12. d7 Ke7 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … dxe5 10. d5 Nf6 11. d6 b6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 b6 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … dxe5 10. d5 Nf6 11. d6 a6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 a6 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … dxe5 10. d5 Nf6 11. d6 g5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 g5 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Kc5 17. Rd5 Kb4 18. Rb5 Ka4
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 e5 12. d7 Kf7 13. Qd5 Nxd5 14. Bc4 Ke7 15. Bg5 Kd6 16. Rd1 Kc5 17. Rd5 Kb4 18. Rb5 Ka4 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 16. Rd1 Kc5 17. Rd5 Kb4 18. Rb5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 e5 12. d7 Kf7 13. Qd5 Nxd5 14. Bc4 Ke7 15. Bg5 Kd6 16. Rd1 Kc5 17. Rd5 Kb4 18. Rb5 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Kd6 16. Rd1 Kc5 17. Rd5 Kb4
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 e5 12. d7 Kf7 13. Qd5 Nxd5 14. Bc4 Ke7 15. Bg5 Kd6 16. Rd1 Kc5 17. Rd5 Kb4 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 15. Bg5 Kd6 16. Rd1 Kc5 17. Rd5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 e5 12. d7 Kf7 13. Qd5 Nxd5 14. Bc4 Ke7 15. Bg5 Kd6 16. Rd1 Kc5 17. Rd5 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Ke7 15. Bg5 Kd6 16. Rd1 Kc5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 e5 12. d7 Kf7 13. Qd5 Nxd5 14. Bc4 Ke7 15. Bg5 Kd6 16. Rd1 Kc5 - Oct 16 08:31 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 14. Bc4 Ke7 15. Bg5 Kd6 16. Rd1
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. Nd5 cxd5 5. d4 d6 6. Ng5 Nc6 7. Bb5 fxg5 8. f3 Bg4 9. e5 dxe5 10. d5 Nf6 11. d6 e5 12. d7 Kf7 13. Qd5 Nxd5 14. Bc4 Ke7 15. Bg5 Kd6 16. Rd1