85.4M
positions
16.3M
practically solved
312.55T
engine nodes
2.4M
analyses
54
in queue
6
active workers
36
active cores
12.3M
nodes / sec
9.8
positions / min
154
proof number
4,668
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 96,780 closures, 2.31T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 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 15.0m (median of 3) · measured at 2026-10-16 16:00 UTC
Closures by source, last 24h (96780 of 96780 labelled): USER 67.1% (64929) · FILL 1.6% (1562) · AUTO 31.2% (30232) · SOLVE 0.0% (0) · NONE 0.1% (57) · last 7d (769038 of 769038): USER 89.6% (689240) · FILL 0.8% (5945) · AUTO 9.5% (73372) · SOLVE 0.0% (0) · NONE 0.1% (481). 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 … e6 10. fxe4 g6 11. Nc3 Bg7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nh3 d5 2. Nc3 e5 … 5. exd5 Bg4 6. f3 c6 7. Bd3 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … e6 10. fxe4 g6 11. Nc3 Be7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nh3 d5 2. Nc3 h6 … d3 15. h4 h5 16. Kh1 Rf7 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … e6 10. fxe4 g6 11. Nc3 Kd7 (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 | 1100 | 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 61.4% of the fleet | 1.42T | 16,240 |
| 2 | RickEdinson 18.2% of the fleet | 419.83B | 4,558 |
| 3 | MoNiKaMaDnEsS 15.6% of the fleet | 361.10B | 3,660 |
| 4 | randomchampgamer 4.8% of the fleet | 111.76B | 639 |
4 accounts · 2.31T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 28.9% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.8% of the fleet | 52.38T | 372,235 |
| 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 | 14.00T | 94,695 |
| 8 | JackIV 3.2% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.7% of the fleet | 8.29T | 57,055 |
| 10 | gannet 2.3% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 312.65T 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 16 16:54 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … g6 10. fxe4 e6 11. Nc3 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 g6 10. fxe4 e6 11. Nc3 Ng8 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Ne4 17. Nxe4 Kd8 18. Qe7 Kc8
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6 Nf6 16. Qe2 Ne4 17. Nxe4 Kd8 18. Qe7 Kc8 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Qe2 Ne4 17. Nxe4 Kd8 18. Qe7
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6 Nf6 16. Qe2 Ne4 17. Nxe4 Kd8 18. Qe7 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nf6 16. Qe2 Ne4 17. Nxe4 Kd8
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6 Nf6 16. Qe2 Ne4 17. Nxe4 Kd8 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Nxe6 Nf6 16. Qe2 Ne4 17. Nxe4
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6 Nf6 16. Qe2 Ne4 17. Nxe4 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Ndf6 15. Nxe6 Nf6 16. Qe2 Ne4
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6 Nf6 16. Qe2 Ne4 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. Nd8 Ndf6 15. Nxe6 Nf6 16. Qe2
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6 Nf6 16. Qe2 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Bh6 14. Nd8 Ndf6 15. Nxe6 Nf6
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6 Nf6 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 15. Nxe6 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nd7 13. Qf3 Bh6 14. Nd8 Ndf6
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 Ndf6 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. g5 Nd7 13. Qf3 Bh6 14. Nd8
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6 14. Nd8 - Oct 16 16:54 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Ng8 12. g5 Nd7 13. Qf3 Bh6
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 g6 10. fxe4 e6 11. Nc3 Ng8 12. g5 Nd7 13. Qf3 Bh6