83.6M
positions
16.0M
practically solved
307.24T
engine nodes
2.3M
analyses
322
in queue
3
active workers
20
active cores
0
nodes / sec
8.9
positions / min
85
proof number
4,551
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 116,258 closures, 3.88T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 217 open obligations, of which 41 (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 40s (median of 3) · measured at 2026-10-14 06:00 UTC
Closures by source, last 24h (116258 of 116258 labelled): USER 99.4% (115554) · FILL 0.5% (553) · AUTO 0.0% (16) · SOLVE 0.0% (0) · NONE 0.1% (135) · last 7d (1235627 of 1235627): USER 97.3% (1202584) · FILL 0.2% (3075) · AUTO 2.4% (29472) · SOLVE 0.0% (0) · NONE 0.0% (496). 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 f5 … d5 11. O-O Bb4 12. h3 Ba3 (User) · 128.0M nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-atomicdb
- 1. Nf3 f6 2. e4 e6 … fxe5 10. f4 Nh6 11. O-O O-O (User) · 128.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. Nf3 f6 2. e4 e6 … 9. Ne5 fxe5 10. f4 Nh6 11. O-O (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 | 1083 | 2 | |
| g1h3 | unsolved | 703 | 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 | -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 33.6% of the fleet | 1.30T | 6,805 |
| 2 | Torom 31.1% of the fleet | 1.21T | 7,835 |
| 3 | randomchampgamer 15.9% of the fleet | 615.02B | 2,618 |
| 4 | RickEdinson 10.6% of the fleet | 410.10B | 2,306 |
| 5 | MoNiKaMaDnEsS 8.9% of the fleet | 344.82B | 2,036 |
5 accounts · 3.88T 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 16.3% of the fleet | 49.94T | 344,541 |
| 3 | tenzink 13.9% 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 | 18.82T | 133,721 |
| 6 | Torom 5.1% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.2% of the fleet | 13.01T | 85,683 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.4% of the fleet | 7.40T | 49,824 |
| 10 | gannet 2.4% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 307.29T 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 06:52 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … d5 11. O-O Bb4 12. h3 Ne7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … a6 19. Qf4 Bd6 20. Nxd5 Kb7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8 Kb8 18. Qf1 a6 19. Qf4 Bd6 20. Nxd5 Kb7 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 18. Qf1 a6 19. Qf4 Bd6 20. Nxd5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8 Kb8 18. Qf1 a6 19. Qf4 Bd6 20. Nxd5 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kb8 18. Qf1 a6 19. Qf4 Bd6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8 Kb8 18. Qf1 a6 19. Qf4 Bd6 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Rf8 Kb8 18. Qf1 a6 19. Qf4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8 Kb8 18. Qf1 a6 19. Qf4 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … bxa6 17. Rf8 Kb8 18. Qf1 a6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8 Kb8 18. Qf1 a6 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Ba6 bxa6 17. Rf8 Kb8 18. Qf1
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8 Kb8 18. Qf1 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … O-O-O 16. Ba6 bxa6 17. Rf8 Kb8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8 Kb8 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 17. Rf8 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 bxa6 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O 16. Ba6 - Oct 14 06:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 e5 7. d4 e4 8. Nd8 Bg4 9. f3 h5 10. Nc3 d5 11. O-O Bb4 12. h3 Ne7 13. Ne6 Nd7 14. fxg4 Nf6 15. Nxg7 O-O-O