54.3M
positions
8.5M
practically solved
197.00T
engine nodes
1.6M
analyses
4,137
in queue
11
active workers
72
active cores
19.9M
nodes / sec
22.9
positions / min
131
proof number
3,716
disproof number
Root conquest: 0/20 first moves solved · 15.6% of tree positions solved · last 24h: 317,048 closures, 4.30T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 75 over 166 open obligations, of which 29 (17.5%) 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 15.9m (median of 200) · measured at 2026-09-17 07:00 UTC
Closures by source, last 24h (317045 of 317045 labelled): USER 99.8% (316386) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.2% (659) · last 7d (1312803 of 1312806): USER 92.9% (1219753) · FILL 1.0% (12889) · AUTO 5.8% (76135) · SOLVE 0.0% (0) · NONE 0.3% (4026). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nh3 e6 2. e3 g6 … d6 10. d5 h5 11. dxe6 Nb8 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nh3 e6 2. e3 g6 … d6 10. d5 h5 11. dxe6 Bxa3 (User) · 128.0M nodes · auranvesdranor-j-002-atomicdb
- 1. Nh3 e6 2. e3 g6 … d6 10. d5 h5 11. dxe6 Bxc3 (User) · 128.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … b5 8. Nxh8 f4 9. h3 h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … b5 8. Nxh8 f4 9. h3 f3 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
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 | 1083 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 502 | 3 | |
| e2e4 | unsolved | 409 | 2 | |
| d2d4 | unsolved | 408 | 2 | |
| b1c3 | unsolved | 74 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | 0 | 3 | |
| b1a3 | unsolved | 0 | 3 | |
| h2h3 | unsolved | -100 | 2 | |
| a2a3 | unsolved | -103 | 2 | |
| f2f3 | unsolved | -110 | 2 | |
| d2d3 | unsolved | -116 | 2 | |
| b2b3 | unsolved | -119 | 1 | |
| f2f4 | unsolved | -223 | 3 | |
| h2h4 | unsolved | -500 | 2 | |
| a2a4 | unsolved | -502 | 2 | |
| g2g4 | unsolved | -600 | 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 | auranvesdranor 33.4% of the fleet | 1.43T | 11,014 |
| 2 | BManBJ 32.5% of the fleet | 1.40T | 10,754 |
| 3 | tenzink 14.3% of the fleet | 614.80B | 3,508 |
| 4 | randomchampgamer 13.7% of the fleet | 587.22B | 4,638 |
| 5 | MoNiKaMaDnEsS 4.1% of the fleet | 177.25B | 1,078 |
| 6 | NeoArcturus 2.0% of the fleet | 85.13B | 244 |
6 accounts · 4.30T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 40.4% of the fleet | 79.65T | 677,611 |
| 2 | tenzink 16.8% of the fleet | 33.10T | 284,025 |
| 3 | auranvesdranor 10.4% of the fleet | 20.43T | 145,630 |
| 4 | BManBJ 10.0% of the fleet | 19.74T | 132,139 |
| 5 | JackIV 4.0% of the fleet | 7.94T | 56,572 |
| 6 | randomchampgamer 3.2% of the fleet | 6.38T | 44,966 |
| 7 | RickEdinson 3.2% of the fleet | 6.32T | 41,667 |
| 8 | NeoArcturus 2.1% of the fleet | 4.09T | 16,751 |
| 9 | ijh 1.8% of the fleet | 3.57T | 37,348 |
| 10 | MoNiKaMaDnEsS 1.8% of the fleet | 3.45T | 21,978 |
and 22 more.
32 accounts · 197.16T 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 · 15 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
- Refuting 1... d61. Nf3 d6 2. Nc3proposed by randomchampgamer · 3 votes
- The weaker of the two f-pawn advances for 1. ...d61. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4proposed by MoNiKaMaDnEsS · 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
- Is Nh3 h6 e3 e6 Nc3 a draw?1. Nh3 e6 2. e3 h6 3. Nc3proposed by soothdest · 3 votes
Showing the 6 most voted of 18 proposals · see every proposal
Milestones
- Sep 17 07:55 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … b5 8. Nxh8 f4 9. h3 g5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nxd4 19. Qd5 Rf8 20. Qb7 Ka5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3 b4 18. Nd5 Nxd4 19. Qd5 Rf8 20. Qb7 Ka5 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 18. Nd5 Nxd4 19. Qd5 Rf8 20. Qb7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3 b4 18. Nd5 Nxd4 19. Qd5 Rf8 20. Qb7 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … b4 18. Nd5 Nxd4 19. Qd5 Rf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3 b4 18. Nd5 Nxd4 19. Qd5 Rf8 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Nc3 b4 18. Nd5 Nxd4 19. Qd5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3 b4 18. Nd5 Nxd4 19. Qd5 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rd8 17. Nc3 b4 18. Nd5 Nxd4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3 b4 18. Nd5 Nxd4 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Qe6 Rd8 17. Nc3 b4 18. Nd5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3 b4 18. Nd5 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kb6 16. Qe6 Rd8 17. Nc3 b4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3 b4 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 17. Nc3 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nc6 15. Qf7 Kb6 16. Qe6 Rd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 Rd8 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6 16. Qe6 - Sep 17 07:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kc7 14. exf7 Nc6 15. Qf7 Kb6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 g6 6. d4 h5 7. Bxc6 b5 8. Nxh8 f4 9. h3 g5 10. e5 Be6 11. Qd3 Bf7 12. Qh7 Kd8 13. e6 Kc7 14. exf7 Nc6 15. Qf7 Kb6