79.3M
positions
15.2M
practically solved
286.16T
engine nodes
2.2M
analyses
6,258
in queue
6
active workers
34
active cores
0
nodes / sec
13.0
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 253,829 closures, 5.06T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 69 over 217 open obligations, of which 41 (18.9%) 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 11.9h (median of 12) · measured at 2026-10-09 01:00 UTC
Closures by source, last 24h (253809 of 253816 labelled): USER 94.8% (240724) · FILL 0.4% (1068) · AUTO 4.7% (11927) · SOLVE 0.0% (0) · NONE 0.0% (90) · last 7d (1748866 of 1748879): USER 99.0% (1731126) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.2% (3717). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nf3 f6 2. e4 e6 … 29. Kf1 a6 30. Ke1 Kf7 31. Be4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. d4 Na6 … g6 9. Qh6 Qh4 10. Kd1 Be7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. e4 d6 2. Nh3 f5 … 12. Nc7 Rxc7 13. Nxh8 g5 14. O-O (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. d4 Na6 … g6 9. Qh6 Qh4 10. Kd1 Bf8 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f6 … g5 10. a4 b4 11. a5 Be7 (User) · 128.0M nodes · randomchampgamer-2026PC-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 | 1044 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 364 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | -73 | 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 44.9% of the fleet | 2.27T | 18,528 |
| 2 | BManBJ 29.5% of the fleet | 1.49T | 10,544 |
| 3 | randomchampgamer 13.1% of the fleet | 661.99B | 4,686 |
| 4 | RickEdinson 8.6% of the fleet | 434.15B | 2,926 |
| 5 | MoNiKaMaDnEsS 3.8% of the fleet | 193.30B | 1,673 |
| 6 | soothdest 0.1% of the fleet | 2.73B | 31 |
| 7 | NeoArcturus <0.1% of the fleet | 546.0M | 5 |
7 accounts · 5.06T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 31.5% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.1% of the fleet | 43.12T | 302,166 |
| 3 | tenzink 15.0% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 11.0% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.7% of the fleet | 16.31T | 119,568 |
| 6 | RickEdinson 3.8% of the fleet | 10.84T | 72,354 |
| 7 | JackIV 3.5% of the fleet | 10.06T | 67,859 |
| 8 | Torom 2.6% of the fleet | 7.37T | 55,749 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.2% of the fleet | 6.20T | 42,008 |
and 25 more.
35 accounts · 286.27T 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 · 17 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 22 proposals · see every proposal
Milestones
- Oct 09 02:02 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f6 … g5 9. a4 b4 10. a5 Bc5
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … g3 20. fxg3 a6 21. Qb7 f4
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7 g4 19. Qb3 g3 20. fxg3 a6 21. Qb7 f4 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 19. Qb3 g3 20. fxg3 a6 21. Qb7
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7 g4 19. Qb3 g3 20. fxg3 a6 21. Qb7 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … g4 19. Qb3 g3 20. fxg3 a6
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7 g4 19. Qb3 g3 20. fxg3 a6 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 18. Rxb7 g4 19. Qb3 g3 20. fxg3
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7 g4 19. Qb3 g3 20. fxg3 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … Kg8 18. Rxb7 g4 19. Qb3 g3
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7 g4 19. Qb3 g3 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 17. Rc7 Kg8 18. Rxb7 g4 19. Qb3
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7 g4 19. Qb3 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … Kf7 17. Rc7 Kg8 18. Rxb7 g4
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7 g4 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 18. Rxb7 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … Rb7 16. Rc8 Kf7 17. Rc7 Kg8
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 Kg8 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7 17. Rc7 - Oct 09 02:02 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … Rb3 15. Rc3 Rb7 16. Rc8 Kf7
1. Nf3 d6 2. Ng5 f6 3. Na3 e6 4. Nb5 h5 5. Nh7 Rxh7 6. Nxc7 d5 7. d4 b5 8. c3 g5 9. a4 b4 10. a5 Bc5 11. cxb4 Rb8 12. Bd2 f5 13. Rc1 Rb5 14. e3 Rb3 15. Rc3 Rb7 16. Rc8 Kf7