85.6M
positions
16.3M
practically solved
313.43T
engine nodes
2.4M
analyses
97
in queue
2
active workers
16
active cores
0
nodes / sec
3.4
positions / min
151
proof number
4,667
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 102,170 closures, 2.24T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 210 open obligations, of which 39 (18.6%) 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 5.0h (median of 4) · measured at 2026-10-17 01:00 UTC
Closures by source, last 24h (102170 of 102170 labelled): USER 65.7% (67166) · FILL 1.7% (1758) · AUTO 32.5% (33184) · SOLVE 0.0% (0) · NONE 0.1% (62) · last 7d (699739 of 699739): USER 87.5% (612044) · FILL 1.0% (6725) · AUTO 11.5% (80477) · SOLVE 0.0% (0) · NONE 0.1% (493). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- … Nh4 Bxh4 Ne4 fxe4 Qc2 Bf5 e4 Re8 g4 Qc7 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Bf6 11. Nc3 h6 12. d4 Rg8 (User) · 128.0M nodes · RickEdinson-MSI-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 | 1153 | 2 | |
| g1h3 | unsolved | 763 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 400 | 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 | BManBJ 65.5% of the fleet | 1.47T | 15,709 |
| 2 | RickEdinson 19.9% of the fleet | 445.79B | 4,527 |
| 3 | MoNiKaMaDnEsS 14.7% of the fleet | 328.43B | 3,676 |
3 accounts · 2.24T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 28.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.9% of the fleet | 52.94T | 376,017 |
| 3 | tenzink 13.7% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.0% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.3% of the fleet | 19.85T | 140,897 |
| 6 | Torom 5.0% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.5% of the fleet | 14.19T | 95,900 |
| 8 | JackIV 3.2% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.7% of the fleet | 8.35T | 57,610 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 313.45T 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 17 01:38 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Bf6 11. Nc3 h6 12. d4 Bd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 11. Nc3 h6 12. d4 Bd8 13. Nxh8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Nxh8 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nd7 15. Nd8 Nf6 16. Bxf6 cxb5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Be7 Bc7 14. Qf3 Nd7 15. Nd8 Nf6 16. Bxf6 cxb5 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. Qf3 Nd7 15. Nd8 Nf6 16. Bxf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Be7 Bc7 14. Qf3 Nd7 15. Nd8 Nf6 16. Bxf6 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bc7 14. Qf3 Nd7 15. Nd8 Nf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Be7 Bc7 14. Qf3 Nd7 15. Nd8 Nf6 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. Be7 Bc7 14. Qf3 Nd7 15. Nd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Be7 Bc7 14. Qf3 Nd7 15. Nd8 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bd8 13. Be7 Bc7 14. Qf3 Nd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Be7 Bc7 14. Qf3 Nd7 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. d4 Bd8 13. Be7 Bc7 14. Qf3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Be7 Bc7 14. Qf3 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … h6 12. d4 Bd8 13. Be7 Bc7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Be7 Bc7 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 11. Nc3 h6 12. d4 Bd8 13. Be7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Be7 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kf7 15. Qh5 Kg8 16. Qf7 Kh8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Bf6 Bc7 14. Bxg7 Kf7 15. Qh5 Kg8 16. Qf7 Kh8 - Oct 17 01:38 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. Bxg7 Kf7 15. Qh5 Kg8 16. Qf7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Bf5 7. d3 Nf6 8. g4 e6 9. gxf5 Be7 10. Bg5 Bf6 11. Nc3 h6 12. d4 Bd8 13. Bf6 Bc7 14. Bxg7 Kf7 15. Qh5 Kg8 16. Qf7