104.3M
positions
22.2M
practically solved
385.21T
engine nodes
2.9M
analyses
351
in queue
active workers
28
active cores
25.6M
nodes / sec
6.6
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.3% of tree positions solved · last 24h: 118,148 closures, 2.26T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 202 open obligations, of which 37 (18.3%) 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 2.9m (median of 97) · measured at 2026-11-01 00:00 UTC
Closures by source, last 24h (118148 of 118148 labelled): USER 99.6% (117711) · FILL 0.3% (410) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (27) · last 7d (1259404 of 1259404): USER 97.9% (1233134) · FILL 0.8% (9572) · AUTO 1.3% (16193) · SOLVE 0.0% (0) · NONE 0.0% (505). 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. e4 d6 2. Nh3 f5 … e5 10. c4 Rb8 11. a3 Nb4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#0
- 1. e4 d6 2. Nh3 f5 … e5 10. c4 Rb8 11. a3 Nxd4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. e4 d6 2. Nh3 f5 … e5 10. c4 Rb8 11. a3 Na5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. e4 d6 2. Nh3 f5 … e5 10. c4 Rb8 11. a3 fxe4 (User) · 128.0M nodes · BManBJ-Laptop-Blake-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 | 1107 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 469 | 3 | |
| e2e4 | unsolved | 410 | 2 | |
| d2d4 | unsolved | 405 | 2 | |
| b1c3 | unsolved | 142 | 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 | BManBJ 71.4% of the fleet | 1.62T | 6,599 |
| 2 | RickEdinson 19.0% of the fleet | 430.59B | 2,849 |
| 3 | MoNiKaMaDnEsS 9.1% of the fleet | 205.60B | 1,355 |
| 4 | soothdest 0.5% of the fleet | 10.22B | 64 |
4 accounts · 2.26T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.4% of the fleet | 78.58T | 530,569 |
| 3 | Torom 13.1% of the fleet | 50.55T | 363,522 |
| 4 | tenzink 11.1% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.2% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.5% of the fleet | 21.22T | 139,027 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.2% of the fleet | 12.51T | 86,478 |
| 9 | JackIV 2.6% of the fleet | 10.06T | 67,859 |
| 10 | gannet 1.9% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 385.24T 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
- Nov 01 00:27 Solved: WHITE_WIN via MINIMAXview
1. e4 d6 2. Nh3 f5 … e5 10. c4 Rb8 11. a3 Nd8
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … Rb5 16. Qa6 Rb7 17. Qc6 Rf7
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qa4 Nc6 13. c5 Be6 14. Bh6 Kd8 15. cxb6 Rb5 16. Qa6 Rb7 17. Qc6 Rf7 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 10. c4 Rb8 11. a3 Nd8 12. Qa4
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qa4 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … d5 15. exd5 Kd7 16. Qe6 Kc7
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6 13. c5 Be6 14. dxe5 d5 15. exd5 Kd7 16. Qe6 Kc7 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 14. dxe5 d5 15. exd5 Kd7 16. Qe6
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6 13. c5 Be6 14. dxe5 d5 15. exd5 Kd7 16. Qe6 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … Be6 14. dxe5 d5 15. exd5 Kd7
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6 13. c5 Be6 14. dxe5 d5 15. exd5 Kd7 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 13. c5 Be6 14. dxe5 d5 15. exd5
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6 13. c5 Be6 14. dxe5 d5 15. exd5 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … Nc6 13. c5 Be6 14. dxe5 d5
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6 13. c5 Be6 14. dxe5 d5 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 12. Qb3 Nc6 13. c5 Be6 14. dxe5
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6 13. c5 Be6 14. dxe5 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … Nd8 12. Qb3 Nc6 13. c5 Be6
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6 13. c5 Be6 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 11. a3 Nd8 12. Qb3 Nc6 13. c5
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6 13. c5 - Nov 01 00:27 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … Rb8 11. a3 Nd8 12. Qb3 Nc6
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 b6 8. Nxh8 Nc6 9. Bg5 e5 10. c4 Rb8 11. a3 Nd8 12. Qb3 Nc6