103.0M
positions
21.7M
practically solved
378.63T
engine nodes
2.8M
analyses
0
in queue
active workers
68
active cores
90.1M
nodes / sec
22.9
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.1% of tree positions solved · last 24h: 168,248 closures, 5.25T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 200 open obligations, of which 36 (18.0%) 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 2.0m (median of 103) · measured at 2026-10-29 15:00 UTC
Closures by source, last 24h (168248 of 168248 labelled): USER 96.9% (163050) · FILL 2.0% (3327) · AUTO 1.0% (1755) · SOLVE 0.0% (0) · NONE 0.1% (116) · last 7d (1984378 of 1984378): USER 98.7% (1958953) · FILL 0.4% (8695) · AUTO 0.8% (16188) · SOLVE 0.0% (0) · NONE 0.0% (542). 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 d6 2. Ng5 f5 … h5 7. d4 b5 8. Nxh8 d5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- deep line, ply ≥36 · … Kc1 a4 Rh3 Rc8 (Fill) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. e4 e6 … exd4 19. f6 Be6 20. f7 Rc8 (Fill) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … h5 7. d4 b5 8. Nxh8 f4 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … h5 7. d4 b5 8. Nxh8 g5 (User) · 512.0M 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 | 1241 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 469 | 3 | |
| d2d4 | unsolved | 405 | 2 | |
| e2e4 | unsolved | 401 | 2 | |
| b1c3 | unsolved | 138 | 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 | Torom 56.9% of the fleet | 2.99T | 19,429 |
| 2 | BManBJ 32.0% of the fleet | 1.68T | 5,639 |
| 3 | RickEdinson 9.1% of the fleet | 479.44B | 3,171 |
| 4 | MoNiKaMaDnEsS 2.1% of the fleet | 108.48B | 711 |
4 accounts · 5.25T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 19.7% of the fleet | 74.68T | 515,844 |
| 3 | Torom 13.1% of the fleet | 49.81T | 358,821 |
| 4 | tenzink 11.3% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.3% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.3% of the fleet | 20.19T | 132,440 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.1% of the fleet | 11.77T | 80,989 |
| 9 | JackIV 2.7% of the fleet | 10.06T | 67,859 |
| 10 | gannet 1.9% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 378.83T 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 29 15:41 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … h5 7. d4 b5 8. Nxh8 e5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kg7 20. Qd7 Kh6 21. Qe8 fxe4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 18. Ne2 Kf8 19. Nxd4 Kg7 20. Qd7 Kh6 21. Qe8 fxe4 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 19. Nxd4 Kg7 20. Qd7 Kh6 21. Qe8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 18. Ne2 Kf8 19. Nxd4 Kg7 20. Qd7 Kh6 21. Qe8 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kf8 19. Nxd4 Kg7 20. Qd7 Kh6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 18. Ne2 Kf8 19. Nxd4 Kg7 20. Qd7 Kh6 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 18. Ne2 Kf8 19. Nxd4 Kg7 20. Qd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 18. Ne2 Kf8 19. Nxd4 Kg7 20. Qd7 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … g6 18. Ne2 Kf8 19. Nxd4 Kg7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 18. Ne2 Kf8 19. Nxd4 Kg7 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. g3 g6 18. Ne2 Kf8 19. Nxd4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 18. Ne2 Kf8 19. Nxd4 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … h3 17. g3 g6 18. Ne2 Kf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 18. Ne2 Kf8 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Nc3 h3 17. g3 g6 18. Ne2
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 18. Ne2 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … h4 16. Nc3 h3 17. g3 g6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 g6 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Bxb8 h4 16. Nc3 h3 17. g3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3 17. g3 - Oct 29 15:41 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bd4 15. Bxb8 h4 16. Nc3 h3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 e6 6. Bxc6 h5 7. d4 b5 8. Nxh8 e5 9. c3 d5 10. dxe5 d4 11. Bf4 Bd6 12. cxd4 Bc5 13. f3 Bf2 14. Kf1 Bd4 15. Bxb8 h4 16. Nc3 h3