104.1M
positions
22.1M
practically solved
384.06T
engine nodes
2.9M
analyses
71
in queue
active workers
32
active cores
25.8M
nodes / sec
6.1
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.2% of tree positions solved · last 24h: 193,864 closures, 2.38T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 202 open obligations, of which 37 (18.3%) 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 32.4d (median of 146) · measured at 2026-10-31 12:00 UTC
Closures by source, last 24h (193864 of 193864 labelled): USER 99.9% (193613) · FILL 0.1% (179) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (72) · last 7d (1339150 of 1339150): USER 98.0% (1312545) · FILL 0.7% (9817) · AUTO 1.2% (16257) · SOLVE 0.0% (0) · NONE 0.0% (531). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing all workers
- 1. Nf3 f6 2. e4 e6 … 12. Bxg5 Qf6 13. g3 Qf4 14. Qb1 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 d6 2. Ng5 f5 … Bg7 14. Bf6 Bb7 15. Bd8 a4 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. e4 e6 … 10. c4 Qa5 11. Kh1 Qc3 12. Ba3 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … 10. c4 Qa5 11. Kh1 Qc3 12. Bh6 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … Qf6 13. g3 Qf5 14. Qc1 h4 (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 | 1140 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 469 | 3 | |
| e2e4 | unsolved | 410 | 2 | |
| d2d4 | unsolved | 405 | 2 | |
| b1c3 | unsolved | 142 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | -59 | 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 68.3% of the fleet | 1.62T | 6,488 |
| 2 | RickEdinson 17.2% of the fleet | 409.03B | 2,538 |
| 3 | MoNiKaMaDnEsS 14.4% of the fleet | 341.52B | 2,679 |
| 4 | soothdest 0.2% of the fleet | 4.10B | 29 |
4 accounts · 2.38T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.5% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.2% of the fleet | 77.78T | 527,479 |
| 3 | Torom 13.2% of the fleet | 50.55T | 363,522 |
| 4 | tenzink 11.2% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.2% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 21.00T | 137,681 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.2% of the fleet | 12.44T | 86,151 |
| 9 | JackIV 2.6% of the fleet | 10.06T | 67,859 |
| 10 | gannet 1.9% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 384.14T 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 31 12:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Qa5 11. Bh6 Nxh6 12. Ne5 h4
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O h5 9. c4 axb5 10. Kh1 Qa5 11. Bh6 Nxh6 12. Ne5 h4 - Oct 31 12:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Qf5 14. exf5 Kd8 15. Qf7 d6
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O h5 9. c4 axb5 10. Kh1 Qa5 11. Bh6 Nxh6 12. Ne5 fxe5 13. Qf3 Qf5 14. exf5 Kd8 15. Qf7 d6 - Oct 31 12:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 13. Qf3 Qf5 14. exf5 Kd8 15. Qf7
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O h5 9. c4 axb5 10. Kh1 Qa5 11. Bh6 Nxh6 12. Ne5 fxe5 13. Qf3 Qf5 14. exf5 Kd8 15. Qf7 - Oct 31 12:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … fxe5 13. Qf3 Qf5 14. exf5 Kd8
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O h5 9. c4 axb5 10. Kh1 Qa5 11. Bh6 Nxh6 12. Ne5 fxe5 13. Qf3 Qf5 14. exf5 Kd8 - Oct 31 12:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 12. Ne5 fxe5 13. Qf3 Qf5 14. exf5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O h5 9. c4 axb5 10. Kh1 Qa5 11. Bh6 Nxh6 12. Ne5 fxe5 13. Qf3 Qf5 14. exf5 - Oct 31 12:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Nxh6 12. Ne5 fxe5 13. Qf3 Qf5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O h5 9. c4 axb5 10. Kh1 Qa5 11. Bh6 Nxh6 12. Ne5 fxe5 13. Qf3 Qf5 - Oct 31 12:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 11. Bh6 Nxh6 12. Ne5 fxe5 13. Qf3
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O h5 9. c4 axb5 10. Kh1 Qa5 11. Bh6 Nxh6 12. Ne5 fxe5 13. Qf3 - Oct 31 12:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Qa5 11. Bh6 Nxh6 12. Ne5 fxe5
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O h5 9. c4 axb5 10. Kh1 Qa5 11. Bh6 Nxh6 12. Ne5 fxe5 - Oct 31 12:51 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Bg7 14. Bf6 Bb7 15. Bd8 d5
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 b6 9. Bg5 g6 10. c4 Bh6 11. O-O a5 12. h3 Na6 13. a3 Bg7 14. Bf6 Bb7 15. Bd8 d5 - Oct 31 12:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rxf6 28. Qb8 Kg7 29. Qg8 Kf6
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 b6 9. Bg5 g6 10. c4 Bh6 11. O-O a5 12. h3 Na6 13. a3 Bg7 14. Bf6 Bb7 15. Bd8 d5 16. exf5 Bh6 17. Bxb6 Kf8 18. cxd5 Kg8 19. Kh1 Kh8 20. d5 Rd8 21. d6 Bf4 22. Re1 Bd2 23. Qb3 Rb8 24. d7 Rf8 25. d8=Q h4 26. Qe7 Rf7 27. Qf6 Rxf6 28. Qb8 Kg7 29. Qg8 Kf6 - Oct 31 12:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 27. Qf6 Rxf6 28. Qb8 Kg7 29. Qg8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 b6 9. Bg5 g6 10. c4 Bh6 11. O-O a5 12. h3 Na6 13. a3 Bg7 14. Bf6 Bb7 15. Bd8 d5 16. exf5 Bh6 17. Bxb6 Kf8 18. cxd5 Kg8 19. Kh1 Kh8 20. d5 Rd8 21. d6 Bf4 22. Re1 Bd2 23. Qb3 Rb8 24. d7 Rf8 25. d8=Q h4 26. Qe7 Rf7 27. Qf6 Rxf6 28. Qb8 Kg7 29. Qg8 - Oct 31 12:51 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rf7 27. Qf6 Rxf6 28. Qb8 Kg7
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 b6 9. Bg5 g6 10. c4 Bh6 11. O-O a5 12. h3 Na6 13. a3 Bg7 14. Bf6 Bb7 15. Bd8 d5 16. exf5 Bh6 17. Bxb6 Kf8 18. cxd5 Kg8 19. Kh1 Kh8 20. d5 Rd8 21. d6 Bf4 22. Re1 Bd2 23. Qb3 Rb8 24. d7 Rf8 25. d8=Q h4 26. Qe7 Rf7 27. Qf6 Rxf6 28. Qb8 Kg7