89.1M
positions
17.1M
practically solved
328.12T
engine nodes
2.5M
analyses
275
in queue
6
active workers
32
active cores
0
nodes / sec
15.2
positions / min
143
proof number
4,658
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 376,175 closures, 4.47T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 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 2.4m (median of 108) · measured at 2026-10-20 05:00 UTC
Closures by source, last 24h (376124 of 376124 labelled): USER 98.9% (372144) · FILL 0.1% (533) · AUTO 0.3% (1002) · SOLVE 0.0% (0) · NONE 0.7% (2445) · last 7d (1170868 of 1170919): USER 93.4% (1093123) · FILL 0.7% (7648) · AUTO 5.7% (67149) · SOLVE 0.0% (0) · NONE 0.3% (2948). 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 … Kh7 13. Bd7 e6 14. Qd2 h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Kh7 13. Bd7 e6 14. Qd2 b6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Kh7 13. Bd7 e6 14. Qd2 e5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … Kh7 13. Bd7 e6 14. Qd2 d5 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … d5 11. O-O g6 12. Bh6 Na6 (User) · 128.0M nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-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 | 1158 | 2 | |
| g1h3 | unsolved | 821 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 401 | 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 49.7% of the fleet | 2.22T | 15,791 |
| 2 | BManBJ 37.2% of the fleet | 1.66T | 12,474 |
| 3 | RickEdinson 9.1% of the fleet | 407.73B | 2,494 |
| 4 | MoNiKaMaDnEsS 4.0% of the fleet | 177.50B | 1,348 |
4 accounts · 4.47T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 27.5% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 17.7% of the fleet | 57.98T | 408,974 |
| 3 | tenzink 13.1% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 9.6% of the fleet | 31.40T | 228,002 |
| 5 | Torom 7.2% of the fleet | 23.48T | 167,251 |
| 6 | randomchampgamer 6.0% of the fleet | 19.85T | 140,897 |
| 7 | RickEdinson 4.8% of the fleet | 15.62T | 104,130 |
| 8 | JackIV 3.1% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.7% of the fleet | 8.80T | 60,612 |
| 10 | gannet 2.2% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 328.18T 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 20 05:39 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Kh7 13. Bd7 e6 14. Qd2 Rb8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kg7 20. Qh6 Kf7 21. Qg7 Ke6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 18. Bxc8 e5 19. fxg5 Kg7 20. Qh6 Kf7 21. Qg7 Ke6 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 19. fxg5 Kg7 20. Qh6 Kf7 21. Qg7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 18. Bxc8 e5 19. fxg5 Kg7 20. Qh6 Kf7 21. Qg7 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e5 19. fxg5 Kg7 20. Qh6 Kf7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 18. Bxc8 e5 19. fxg5 Kg7 20. Qh6 Kf7 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 18. Bxc8 e5 19. fxg5 Kg7 20. Qh6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 18. Bxc8 e5 19. fxg5 Kg7 20. Qh6 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rc8 18. Bxc8 e5 19. fxg5 Kg7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 18. Bxc8 e5 19. fxg5 Kg7 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. f4 Rc8 18. Bxc8 e5 19. fxg5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 18. Bxc8 e5 19. fxg5 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … g5 17. f4 Rc8 18. Bxc8 e5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 18. Bxc8 e5 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Nxf4 g5 17. f4 Rc8 18. Bxc8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 18. Bxc8 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … f4 16. Nxf4 g5 17. f4 Rc8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 Rc8 - Oct 20 05:39 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Ne2 f4 16. Nxf4 g5 17. f4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 Rh7 6. Bg5 Nf6 7. Nd8 g6 8. Ne6 Bh6 9. Nxc7 Kf8 10. Bxh6 Ne8 11. Nc3 Kg7 12. Bb5 Kh7 13. Bd7 e6 14. Qd2 Rb8 15. Ne2 f4 16. Nxf4 g5 17. f4 - Oct 20 05:39 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … e6 11. fxe4 g6 12. Bh6 Ng8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 Be4 9. f3 d5 10. O-O e6 11. fxe4 g6 12. Bh6 Ng8