103.8M
positions
22.0M
practically solved
382.52T
engine nodes
2.9M
analyses
346
in queue
active workers
28
active cores
25.6M
nodes / sec
6.6
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.2% of tree positions solved · last 24h: 244,669 closures, 2.58T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 72 over 203 open obligations, of which 37 (18.2%) 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 2.8h (median of 90) · measured at 2026-10-30 19:00 UTC
Closures by source, last 24h (244606 of 244606 labelled): USER 100.0% (244526) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (80) · last 7d (1414074 of 1414137): USER 98.1% (1387611) · FILL 0.7% (9638) · AUTO 1.1% (16257) · SOLVE 0.0% (0) · NONE 0.0% (568). 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 d6 2. Ng5 f5 … Bc8 11. b4 f4 12. h3 Kf7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 d6 2. Ng5 f5 … Bc8 11. b4 f4 12. h3 Bd7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Bc8 11. b4 f4 12. h3 a5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … Bc8 11. b4 f4 12. h3 Bg7 (User) · 512.0M nodes · BManBJ-Laptop-Blake-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 | 1169 | 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 65.0% of the fleet | 1.68T | 5,940 |
| 2 | MoNiKaMaDnEsS 17.6% of the fleet | 453.09B | 3,594 |
| 3 | RickEdinson 17.3% of the fleet | 446.75B | 2,893 |
| 4 | soothdest <0.1% of the fleet | 896.0M | 7 |
| 5 | NeoArcturus <0.1% of the fleet | 384.4M | 3 |
5 accounts · 2.58T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.6% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.0% of the fleet | 76.64T | 522,695 |
| 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 5.4% of the fleet | 20.72T | 135,795 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.2% of the fleet | 12.30T | 85,123 |
| 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 · 382.58T 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 30 19:44 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Bc8 11. b4 f4 12. h3 f3
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kf8 24. Qd8 Kg7 25. Qg8 Kh6
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6 Ke7 23. Qg5 Kf8 24. Qd8 Kg7 25. Qg8 Kh6 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 23. Qg5 Kf8 24. Qd8 Kg7 25. Qg8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6 Ke7 23. Qg5 Kf8 24. Qd8 Kg7 25. Qg8 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Ke7 23. Qg5 Kf8 24. Qd8 Kg7
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6 Ke7 23. Qg5 Kf8 24. Qd8 Kg7 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 22. bxc6 Ke7 23. Qg5 Kf8 24. Qd8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6 Ke7 23. Qg5 Kf8 24. Qd8 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kd8 22. bxc6 Ke7 23. Qg5 Kf8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6 Ke7 23. Qg5 Kf8 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 21. Bxf8 Kd8 22. bxc6 Ke7 23. Qg5
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6 Ke7 23. Qg5 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rf8 21. Bxf8 Kd8 22. bxc6 Ke7
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6 Ke7 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 22. bxc6 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … b6 20. b5 Rf8 21. Bxf8 Kd8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 Kd8 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 19. Qc1 b6 20. b5 Rf8 21. Bxf8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8 21. Bxf8 - Oct 30 19:44 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … O-O-O 19. Qc1 b6 20. b5 Rf8
1. Nf3 d6 2. Ng5 f5 3. e3 Qd7 4. Nf7 Qb5 5. Bxb5 c6 6. e4 h5 7. d4 e6 8. Nxh8 Bd7 9. Bg5 g6 10. c4 Bc8 11. b4 f4 12. h3 f3 13. c5 d5 14. e5 Nd7 15. gxf3 Nf6 16. Bh6 Bd6 17. exf6 Bd7 18. cxd6 O-O-O 19. Qc1 b6 20. b5 Rf8