109.4M
positions
23.3M
practically solved
408.60T
engine nodes
3.0M
analyses
2,783
in queue
active workers
132
active cores
143.0M
nodes / sec
65.9
positions / min
118
proof number
4,004
disproof number
Root conquest: 0/20 first moves solved · 21.3% of tree positions solved · last 24h: 698,170 closures, 12.07T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 69 over 195 open obligations, of which 36 (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 9.1m (median of 3) · measured at 2026-11-03 10:00 UTC
Closures by source, last 24h (698145 of 698170 labelled): USER 100.0% (697960) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (185) · last 7d (1825436 of 1825436): USER 99.1% (1809656) · FILL 0.5% (8983) · AUTO 0.3% (6149) · SOLVE 0.0% (0) · NONE 0.0% (648). 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. Nh3 f6 2. Nc3 h6 … O-O-O 9. a3 Na2 10. Bb5 Nc1 (User) · 128.0M nodes · bluebird
- 1. Nf3 d6 2. Ng5 f5 … b6 11. O-O a5 12. d5 Bh6 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 d6 2. Ng5 f5 … b6 11. O-O a5 12. d5 Ra7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … b6 11. O-O a5 12. d5 Ba6 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … b6 11. O-O a5 12. d5 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 | |
|---|---|---|---|---|
| Nf3 | unsolved | 1261 | 2 | |
| Nh3 | unsolved | 749 | 2 | |
| d4 | unsolved | 443 | 2 | |
| e3 | unsolved | 437 | 3 | |
| e4 | unsolved | 400 | 2 | |
| Nc3 | unsolved | 154 | 2 | |
| Na3 | unsolved | 0 | 3 | |
| c3 | unsolved | 0 | 2 | |
| g3 | unsolved | 0 | 3 | |
| b4 | unsolved | -59 | 3 | |
| h3 | unsolved | -97 | 3 | |
| d3 | unsolved | -98 | 2 | |
| a3 | unsolved | -100 | 2 | |
| f3 | unsolved | -117 | 3 | |
| b3 | unsolved | -144 | 1 | |
| f4 | unsolved | -260 | 3 | |
| h4 | unsolved | -500 | 3 | |
| a4 | unsolved | -514 | 2 | |
| g4 | unsolved | -604 | 3 | |
| c4 | 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 | Torom 44.9% of the fleet | 5.42T | 41,364 |
| 2 | gannet 34.5% of the fleet | 4.17T | 32,416 |
| 3 | BManBJ 13.2% of the fleet | 1.59T | 6,746 |
| 4 | RickEdinson 3.9% of the fleet | 466.29B | 3,366 |
| 5 | MoNiKaMaDnEsS 3.4% of the fleet | 406.16B | 3,107 |
| 6 | rookgamestrategy 0.1% of the fleet | 17.28B | 81 |
6 accounts · 12.07T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 22.1% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.2% of the fleet | 82.49T | 547,156 |
| 3 | Torom 14.5% of the fleet | 59.40T | 430,588 |
| 4 | tenzink 10.5% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 7.7% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 22.32T | 146,707 |
| 7 | randomchampgamer 4.9% of the fleet | 19.85T | 140,897 |
| 8 | gannet 3.9% of the fleet | 16.00T | 112,549 |
| 9 | MoNiKaMaDnEsS 3.3% of the fleet | 13.28T | 92,187 |
| 10 | JackIV 2.5% of the fleet | 10.06T | 67,859 |
and 26 more.
36 accounts · 408.70T 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 03 10:17 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … e6 8. f3 h6 9. d4 Ng4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … d5 18. Qf6 Bf5 19. Qf8 Kd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 16. Qe4 e5 17. Qh4 d5 18. Qf6 Bf5 19. Qf8 Kd7 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Qh4 d5 18. Qf6 Bf5 19. Qf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 16. Qe4 e5 17. Qh4 d5 18. Qf6 Bf5 19. Qf8 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e5 17. Qh4 d5 18. Qf6 Bf5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 16. Qe4 e5 17. Qh4 d5 18. Qf6 Bf5 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Qe4 e5 17. Qh4 d5 18. Qf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 16. Qe4 e5 17. Qh4 d5 18. Qf6 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … a6 16. Qe4 e5 17. Qh4 d5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 16. Qe4 e5 17. Qh4 d5 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Nxh8 a6 16. Qe4 e5 17. Qh4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 16. Qe4 e5 17. Qh4 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bg7 15. Nxh8 a6 16. Qe4 e5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 16. Qe4 e5 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. Be7 Bg7 15. Nxh8 a6 16. Qe4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 16. Qe4 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nxd5 14. Be7 Bg7 15. Nxh8 a6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 a6 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7 15. Nxh8 - Nov 03 10:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … g6 13. Bxa6 Nxd5 14. Be7 Bg7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e6 8. f3 h6 9. d4 Ng4 10. Bg5 Nf6 11. Nd5 Na6 12. Qd3 g6 13. Bxa6 Nxd5 14. Be7 Bg7