79.7M
positions
15.3M
practically solved
287.68T
engine nodes
2.2M
analyses
4,580
in queue
15
active workers
74
active cores
14.5M
nodes / sec
36.8
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 180,957 closures, 3.30T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 219 open obligations, of which 40 (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 20.3h (median of 3) · measured at 2026-10-09 13:00 UTC
Closures by source, last 24h (180957 of 180957 labelled): USER 100.0% (180918) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (39) · last 7d (1659121 of 1659121): USER 99.0% (1641889) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.2% (3209). 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 … Re8 24. Bxd6 e5 25. g4 Kg8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nh3 d5 2. Nc3 h6 … 14. Qh7 Rxh7 15. h5 f3 16. gxf3 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. Nc3 c6 … h6 10. Ba6 b6 11. a4 d6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. Nc3 c6 … h6 10. Ba6 b6 11. a4 e5 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Bxe7 13. O-O Nb4 14. Qe1 a6 (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 | 1108 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 379 | 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 | BManBJ 45.8% of the fleet | 1.51T | 9,972 |
| 2 | randomchampgamer 20.0% of the fleet | 660.53B | 4,629 |
| 3 | Torom 17.7% of the fleet | 584.68B | 3,911 |
| 4 | RickEdinson 13.5% of the fleet | 444.95B | 2,758 |
| 5 | MoNiKaMaDnEsS 2.9% of the fleet | 95.36B | 703 |
5 accounts · 3.30T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 31.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.2% of the fleet | 43.88T | 307,307 |
| 3 | tenzink 14.9% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.9% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.8% of the fleet | 16.64T | 121,982 |
| 6 | RickEdinson 3.8% of the fleet | 11.06T | 73,747 |
| 7 | JackIV 3.5% of the fleet | 10.06T | 67,859 |
| 8 | Torom 2.7% of the fleet | 7.74T | 58,125 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.2% of the fleet | 6.20T | 42,043 |
and 25 more.
35 accounts · 287.95T 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 14:00 Solved: WHITE_WIN via MINIMAXview
1. Nh3 d5 2. Ng5 f6 … Bg4 8. f3 Nd4 9. Nxe5 a6
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … Ka8 20. Rb8 Ka7 21. Ra8 Kb7
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5 Nd6 19. Rb7 Ka8 20. Rb8 Ka7 21. Ra8 Kb7 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … 19. Rb7 Ka8 20. Rb8 Ka7 21. Ra8
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5 Nd6 19. Rb7 Ka8 20. Rb8 Ka7 21. Ra8 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … Nd6 19. Rb7 Ka8 20. Rb8 Ka7
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5 Nd6 19. Rb7 Ka8 20. Rb8 Ka7 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … 18. Qe5 Nd6 19. Rb7 Ka8 20. Rb8
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5 Nd6 19. Rb7 Ka8 20. Rb8 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … b5 18. Qe5 Nd6 19. Rb7 Ka8
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5 Nd6 19. Rb7 Ka8 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … 17. Bxc6 b5 18. Qe5 Nd6 19. Rb7
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5 Nd6 19. Rb7 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … Kb8 17. Bxc6 b5 18. Qe5 Nd6
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5 Nd6 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 18. Qe5 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … Rd7 16. Rf7 Kb8 17. Bxc6 b5
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 b5 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8 17. Bxc6 - Oct 09 14:00 Solved: WHITE_WIN via MATE_PVview
1. Nh3 d5 2. Ng5 f6 … Bc5 15. d4 Rd7 16. Rf7 Kb8
1. Nh3 d5 2. Ng5 f6 3. e3 f5 4. Nf7 e5 5. e4 Nc6 6. g3 Qf6 7. exf5 Bg4 8. f3 Nd4 9. Nxe5 a6 10. Bb5 c6 11. fxg4 Nf6 12. Qe2 Ne4 13. O-O O-O-O 14. Qh5 Bc5 15. d4 Rd7 16. Rf7 Kb8