104.7M
positions
22.3M
practically solved
387.29T
engine nodes
2.9M
analyses
12
in queue
active workers
96
active cores
72.8M
nodes / sec
32.0
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.3% of tree positions solved · last 24h: 142,466 closures, 3.34T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 201 open obligations, of which 37 (18.4%) 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 6.2m (median of 50) · measured at 2026-11-01 11:00 UTC
Closures by source, last 24h (142466 of 142466 labelled): USER 99.8% (142198) · FILL 0.2% (231) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (37) · last 7d (1264996 of 1264996): USER 97.9% (1238752) · FILL 0.8% (9572) · AUTO 1.3% (16193) · SOLVE 0.0% (0) · NONE 0.0% (479). 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. Nc3 c6 3. Nd4 Nh6 4. e3 g6 (User) · 128.0M nodes · acornwood
- 1. e4 Nf6 2. f3 c6 … Qa5 7. b4 Ng4 8. Ba6 b6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 f6 2. Nc3 Nh6 … e6 9. h4 Bg7 10. Bxh6 Qb6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. d4 d5 2. Nc3 Bg4 … Bd7 14. h4 Bb5 15. g4 a5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nc3 e5 2. e3 d5 … a5 9. Rb1 Be6 10. c3 a4 (User) · 128.0M 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 | 1062 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 437 | 3 | |
| d2d4 | unsolved | 411 | 2 | |
| e2e4 | unsolved | 410 | 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 49.3% of the fleet | 1.65T | 6,738 |
| 2 | gannet 33.4% of the fleet | 1.11T | 8,298 |
| 3 | RickEdinson 13.8% of the fleet | 459.57B | 3,143 |
| 4 | MoNiKaMaDnEsS 3.1% of the fleet | 102.68B | 589 |
| 5 | soothdest 0.4% of the fleet | 14.70B | 99 |
5 accounts · 3.34T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.3% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.5% of the fleet | 79.31T | 533,778 |
| 3 | Torom 13.1% of the fleet | 50.55T | 363,522 |
| 4 | tenzink 11.1% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.1% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 21.43T | 140,602 |
| 7 | randomchampgamer 5.1% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.2% of the fleet | 12.54T | 86,740 |
| 9 | JackIV 2.6% of the fleet | 10.06T | 67,859 |
| 10 | gannet 2.2% of the fleet | 8.35T | 55,146 |
and 25 more.
35 accounts · 387.32T 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
- Nov 01 11:12 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. e4 c6 … Qe7 10. Nd6 Qxd6 11. a4 Nd7
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Kd7 21. Qe7 Kc6 22. Qc7 Kb5
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4 Nc5 20. dxc5 Kd7 21. Qe7 Kc6 22. Qc7 Kb5 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 20. dxc5 Kd7 21. Qe7 Kc6 22. Qc7
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4 Nc5 20. dxc5 Kd7 21. Qe7 Kc6 22. Qc7 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Nc5 20. dxc5 Kd7 21. Qe7 Kc6
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4 Nc5 20. dxc5 Kd7 21. Qe7 Kc6 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 19. Bxc4 Nc5 20. dxc5 Kd7 21. Qe7
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4 Nc5 20. dxc5 Kd7 21. Qe7 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Rc5 19. Bxc4 Nc5 20. dxc5 Kd7
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4 Nc5 20. dxc5 Kd7 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 18. Qa3 Rc5 19. Bxc4 Nc5 20. dxc5
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4 Nc5 20. dxc5 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Bc4 18. Qa3 Rc5 19. Bxc4 Nc5
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4 Nc5 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 19. Bxc4 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Bb5 17. Bd3 Bc4 18. Qa3 Rc5
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 Rc5 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4 18. Qa3 - Nov 01 11:12 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Bc6 16. Qa2 Bb5 17. Bd3 Bc4
1. Nf3 f6 2. e4 c6 3. Nc3 e5 4. g4 Nh6 5. Nb5 cxb5 6. d4 d6 7. c3 b5 8. Ng5 d5 9. Nf7 Qe7 10. Nd6 Qxd6 11. a4 Nd7 12. exd5 Bb7 13. axb5 Ba3 14. bxa3 Rc8 15. Qa4 Bc6 16. Qa2 Bb5 17. Bd3 Bc4