79.4M
positions
15.3M
practically solved
286.69T
engine nodes
2.2M
analyses
6,528
in queue
6
active workers
34
active cores
5.8M
nodes / sec
12.5
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 171,355 closures, 4.05T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 69 over 216 open obligations, of which 40 (18.5%) 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 1.4h (median of 153) · measured at 2026-10-09 06:00 UTC
Closures by source, last 24h (171355 of 171355 labelled): USER 92.9% (159153) · FILL 0.2% (283) · AUTO 6.9% (11853) · SOLVE 0.0% (0) · NONE 0.0% (66) · last 7d (1694566 of 1694566): USER 99.0% (1677050) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.2% (3493). 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. Nc3 Na6 … d5 8. d4 h6 9. Bf4 g5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. Nc3 c6 … Be4 29. c4 Rd8 30. Rd1 Bh7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. e4 e6 … 26. g4 d4 27. c5 Bc6 28. Rd1 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … 9. c4 Na6 10. b4 Rb8 11. O-O (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. Nc3 Na6 … d5 8. d4 h6 9. Bf4 b6 (User) · 128.0M nodes · randomchampgamer-2026PC-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 | 1057 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 364 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | -73 | 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 36.3% of the fleet | 1.47T | 10,525 |
| 2 | Torom 34.3% of the fleet | 1.39T | 12,650 |
| 3 | randomchampgamer 16.0% of the fleet | 649.96B | 4,606 |
| 4 | RickEdinson 10.6% of the fleet | 428.06B | 2,950 |
| 5 | MoNiKaMaDnEsS 2.7% of the fleet | 110.48B | 1,137 |
| 6 | soothdest 0.1% of the fleet | 2.73B | 31 |
| 7 | NeoArcturus <0.1% of the fleet | 546.0M | 5 |
7 accounts · 4.05T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 31.5% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.1% of the fleet | 43.42T | 304,250 |
| 3 | tenzink 14.9% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.9% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.7% of the fleet | 16.44T | 120,624 |
| 6 | RickEdinson 3.8% of the fleet | 10.92T | 72,942 |
| 7 | JackIV 3.5% of the fleet | 10.06T | 67,859 |
| 8 | Torom 2.6% of the fleet | 7.37T | 55,749 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.2% of the fleet | 6.20T | 42,008 |
and 25 more.
35 accounts · 286.78T 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 · 17 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 22 proposals · see every proposal
Milestones
- Oct 09 06:57 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. Nc3 Na6 … d5 8. d4 h6 9. Bf4 b5
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … Bc7 24. Qc8 Kg7 25. Qg8 Kf6
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8 Bd8 23. Qb7 Bc7 24. Qc8 Kg7 25. Qg8 Kf6 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 23. Qb7 Bc7 24. Qc8 Kg7 25. Qg8
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8 Bd8 23. Qb7 Bc7 24. Qc8 Kg7 25. Qg8 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … Bd8 23. Qb7 Bc7 24. Qc8 Kg7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8 Bd8 23. Qb7 Bc7 24. Qc8 Kg7 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 22. Qa8 Bd8 23. Qb7 Bc7 24. Qc8
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8 Bd8 23. Qb7 Bc7 24. Qc8 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … Bc7 22. Qa8 Bd8 23. Qb7 Bc7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8 Bd8 23. Qb7 Bc7 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 21. Bxc7 Bc7 22. Qa8 Bd8 23. Qb7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8 Bd8 23. Qb7 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … Rc7 21. Bxc7 Bc7 22. Qa8 Bd8
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8 Bd8 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 22. Qa8 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … Rc8 20. Qa7 Rc7 21. Bxc7 Bc7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 Bc7 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7 21. Bxc7 - Oct 09 06:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 Na6 … Be5 19. Qb8 Rc8 20. Qa7 Rc7
1. Nf3 f6 2. Nc3 Na6 3. Ng5 d6 4. Nf7 e6 5. Nb5 Nb8 6. Nxc7 g6 7. Nxh8 d5 8. d4 h6 9. Bf4 b5 10. Bd6 Bg7 11. Qd2 a5 12. Qc3 Rc8 13. Qa3 Rc4 14. Bc7 b4 15. Qa4 Rc6 16. e3 Kf7 17. Bd6 f5 18. Qb5 Be5 19. Qb8 Rc8 20. Qa7 Rc7