92.2M
positions
18.3M
practically solved
337.65T
engine nodes
2.6M
analyses
851
in queue
14
active workers
66
active cores
14.6M
nodes / sec
44.0
positions / min
143
proof number
4,658
disproof number
Root conquest: 0/20 first moves solved · 19.9% of tree positions solved · last 24h: 871,312 closures, 7.67T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 205 open obligations, of which 37 (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 6.3m (median of 116) · measured at 2026-10-21 15:00 UTC
Closures by source, last 24h (872309 of 872309 labelled): USER 99.8% (870657) · FILL 0.1% (1235) · AUTO 0.0% (320) · SOLVE 0.0% (0) · NONE 0.0% (97) · last 7d (2143896 of 2144048): USER 96.2% (2062490) · FILL 0.5% (10992) · AUTO 3.1% (67528) · SOLVE 0.0% (0) · NONE 0.1% (2886). 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 … g5 12. Qd2 Rb8 13. Nd5 a6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … g5 12. Qd2 Rb8 13. Nd5 a5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … g5 12. Qd2 Rb8 13. Nd5 h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- deep line, ply ≥48 · … c6 Nd3 Kd2 Rc7 (User) · 128.0M nodes · RickEdinson-MSI-atomicdb
- deep line, ply ≥27 · … f5 Rd3 Re8 b4 (User) · 128.0M nodes · Torom-torsten-pc-atomicdb#0
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 | 1180 | 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 63.2% of the fleet | 4.85T | 36,228 |
| 2 | BManBJ 24.9% of the fleet | 1.91T | 14,714 |
| 3 | RickEdinson 6.5% of the fleet | 499.55B | 2,852 |
| 4 | MoNiKaMaDnEsS 5.4% of the fleet | 412.88B | 2,832 |
4 accounts · 7.67T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 26.7% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 18.0% of the fleet | 60.67T | 429,393 |
| 3 | tenzink 12.7% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 9.3% of the fleet | 31.40T | 228,002 |
| 5 | Torom 8.6% of the fleet | 29.20T | 208,680 |
| 6 | randomchampgamer 5.9% of the fleet | 19.85T | 140,897 |
| 7 | RickEdinson 4.8% of the fleet | 16.33T | 108,107 |
| 8 | JackIV 3.0% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.8% of the fleet | 9.34T | 64,290 |
| 10 | gannet 2.1% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 337.87T 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 21 15:46 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … g5 12. Qd2 Rb8 13. Nd5 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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rd8 18. Qe8 Kg7 19. Qf7 Kh6
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 Nh7 11. Nc3 Kg8 12. Qd2 g5 13. Nd5 Kf8 14. exf5 e5 15. Qe2 e4 16. Qb5 e3 17. fxe3 Rd8 18. Qe8 Kg7 19. Qf7 Kh6 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. fxe3 Rd8 18. Qe8 Kg7 19. Qf7
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 Nh7 11. Nc3 Kg8 12. Qd2 g5 13. Nd5 Kf8 14. exf5 e5 15. Qe2 e4 16. Qb5 e3 17. fxe3 Rd8 18. Qe8 Kg7 19. Qf7 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 15. Qe2 e4 16. Qb5 e3 17. fxe3
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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. exf5 e5 15. Qe2 e4 16. Qb5 e3 17. fxe3 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e5 15. Qe2 e4 16. Qb5 e3
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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. exf5 e5 15. Qe2 e4 16. Qb5 e3 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. exf5 e5 15. Qe2 e4 16. Qb5
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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. exf5 e5 15. Qe2 e4 16. Qb5 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kf7 14. exf5 e5 15. Qe2 e4
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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. exf5 e5 15. Qe2 e4 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. Nd5 Kf7 14. exf5 e5 15. Qe2
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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. exf5 e5 15. Qe2 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rb8 13. Nd5 Kf7 14. exf5 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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. exf5 e5 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. Qd2 Rb8 13. Nd5 Kf7 14. exf5
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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. exf5 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rb8 13. Nd5 Kf7 14. Qc3 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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. Qc3 Kg7 - Oct 21 15:46 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. Qd2 Rb8 13. Nd5 Kf7 14. Qc3
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 Nh7 11. Nc3 g5 12. Qd2 Rb8 13. Nd5 Kf7 14. Qc3