93.3M
positions
18.8M
practically solved
340.88T
engine nodes
2.6M
analyses
21
in queue
11
active workers
52
active cores
74.4M
nodes / sec
33.1
positions / min
143
proof number
4,658
disproof number
Root conquest: 0/20 first moves solved · 20.1% of tree positions solved · last 24h: 997,647 closures, 7.31T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 209 open obligations, of which 39 (18.7%) 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 1.9m (median of 110) · measured at 2026-10-22 02:00 UTC
Closures by source, last 24h (997616 of 997646 labelled): USER 100.0% (997570) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (46) · last 7d (2542818 of 2542819): USER 97.1% (2469412) · FILL 0.4% (9927) · AUTO 2.4% (60605) · SOLVE 0.0% (0) · NONE 0.1% (2874). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nf3 d6 2. Ng5 f5 … 10. Nxh8 Be7 11. d4 Bh4 12. Bd3 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … 10. Nxh8 Be7 11. d4 Bh4 12. Be2 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … 10. Nxh8 Be7 11. d4 Bh4 12. Bf1 (User) · 128.0M nodes · RickEdinson-MSI-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … 10. Nxh8 Be7 11. d4 Bh4 12. Ba4 (User) · 128.0M nodes · Torom-torsten-pc-atomicdb#0
- 1. Nf3 f6 2. e4 e6 … Rc8 19. Rd1 a6 20. Ra1 a5 (Fill) · 2.00B nodes · Torom-torsten-pc-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 | 1104 | 2 | |
| g1h3 | unsolved | 630 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 402 | 2 | |
| e2e4 | unsolved | 400 | 2 | |
| b1c3 | unsolved | 138 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -65 | 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 | Torom 62.9% of the fleet | 4.60T | 34,667 |
| 2 | BManBJ 26.6% of the fleet | 1.94T | 15,427 |
| 3 | RickEdinson 6.7% of the fleet | 488.65B | 2,949 |
| 4 | MoNiKaMaDnEsS 3.3% of the fleet | 243.59B | 1,653 |
| 5 | soothdest 0.5% of the fleet | 33.49B | 199 |
5 accounts · 7.31T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 26.5% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 18.0% of the fleet | 61.56T | 436,478 |
| 3 | tenzink 12.6% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 9.2% of the fleet | 31.40T | 228,002 |
| 5 | Torom 9.2% of the fleet | 31.25T | 223,999 |
| 6 | randomchampgamer 5.8% of the fleet | 19.85T | 140,897 |
| 7 | RickEdinson 4.9% of the fleet | 16.55T | 109,361 |
| 8 | JackIV 2.9% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.8% of the fleet | 9.38T | 64,473 |
| 10 | gannet 2.1% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 341.10T 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 22 02:52 Solved: BLACK_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … 10. Nxh8 Be7 11. d4 Bh4 12. Bh6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. Bh6 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rf8 19. Qb5 Kc8 20. Qd7 Kb8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2 b4 18. Qe2 Rf8 19. Qb5 Kc8 20. Qd7 Kb8 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 18. Qe2 Rf8 19. Qb5 Kc8 20. Qd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2 b4 18. Qe2 Rf8 19. Qb5 Kc8 20. Qd7 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … b4 18. Qe2 Rf8 19. Qb5 Kc8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2 b4 18. Qe2 Rf8 19. Qb5 Kc8 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Qd2 b4 18. Qe2 Rf8 19. Qb5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2 b4 18. Qe2 Rf8 19. Qb5 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … b5 17. Qd2 b4 18. Qe2 Rf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2 b4 18. Qe2 Rf8 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Bxc6 b5 17. Qd2 b4 18. Qe2
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2 b4 18. Qe2 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kd8 16. Bxc6 b5 17. Qd2 b4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2 b4 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 17. Qd2 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Re8 15. Qe2 Kd8 16. Bxc6 b5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 b5 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. f4 Re8 15. Qe2 Kd8 16. Bxc6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8 16. Bxc6 - Oct 22 02:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bg5 14. f4 Re8 15. Qe2 Kd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 g6 7. Nc3 e6 8. Nd5 Na6 9. Nc7 Nxc7 10. Nxh8 Be7 11. d4 Bh4 12. g3 Ke7 13. Bh6 Bg5 14. f4 Re8 15. Qe2 Kd8