104.2M
positions
22.1M
practically solved
384.44T
engine nodes
2.9M
analyses
12
in queue
active workers
36
active cores
32.8M
nodes / sec
6.7
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.3% of tree positions solved · last 24h: 151,165 closures, 2.28T 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 6.0m (median of 106) · measured at 2026-10-31 16:00 UTC
Closures by source, last 24h (151165 of 151165 labelled): USER 99.7% (150708) · FILL 0.3% (410) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (47) · last 7d (1329861 of 1329861): USER 98.0% (1303028) · FILL 0.8% (10048) · AUTO 1.2% (16257) · SOLVE 0.0% (0) · NONE 0.0% (528). 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 … a6 13. Qa4 a5 14. Qc6 Rf7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. e4 d6 2. Nh3 f5 … a6 13. Qa4 a5 14. Qc6 Rd8 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. e4 d6 2. Nh3 f5 … a6 13. Qa4 a5 14. Qc6 Kh8 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. e4 d6 2. Nh3 f5 … a6 13. Qa4 a5 14. Qc6 Re8 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. e4 d6 2. Nh3 f5 … a6 13. Qa4 a5 14. Qc6 Bb7 (User) · 512.0M 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 | 1110 | 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 71.1% of the fleet | 1.62T | 6,664 |
| 2 | RickEdinson 17.9% of the fleet | 407.25B | 2,483 |
| 3 | MoNiKaMaDnEsS 10.6% of the fleet | 242.14B | 1,813 |
| 4 | soothdest 0.4% of the fleet | 9.70B | 63 |
4 accounts · 2.28T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.5% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 20.3% of the fleet | 78.02T | 528,420 |
| 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 | 21.07T | 138,041 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.2% of the fleet | 12.46T | 86,225 |
| 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 · 384.46T 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 31 16:17 Solved: WHITE_WIN via MINIMAXview
1. e4 d6 2. Nh3 f5 … a6 13. Qa4 a5 14. Qc6 Nxe4
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … Kh8 25. Rg8 Kh7 26. Rh8 Kg7
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 23. h3 Rf8 24. Rg7 Kh8 25. Rg8 Kh7 26. Rh8 Kg7 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 24. Rg7 Kh8 25. Rg8 Kh7 26. Rh8
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 23. h3 Rf8 24. Rg7 Kh8 25. Rg8 Kh7 26. Rh8 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … Rf8 24. Rg7 Kh8 25. Rg8 Kh7
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 23. h3 Rf8 24. Rg7 Kh8 25. Rg8 Kh7 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 23. h3 Rf8 24. Rg7 Kh8 25. Rg8
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 23. h3 Rf8 24. Rg7 Kh8 25. Rg8 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … g3 23. h3 Rf8 24. Rg7 Kh8
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 23. h3 Rf8 24. Rg7 Kh8 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 22. Rae1 g3 23. h3 Rf8 24. Rg7
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 23. h3 Rf8 24. Rg7 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … g4 22. Rae1 g3 23. h3 Rf8
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 23. h3 Rf8 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 21. Re7 g4 22. Rae1 g3 23. h3
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 23. h3 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … g5 21. Re7 g4 22. Rae1 g3
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 g3 - Oct 31 16:17 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … 20. Rfe1 g5 21. Re7 g4 22. Rae1
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4 22. Rae1 - Oct 31 16:16 Solved: WHITE_WIN via MATE_PVview
1. e4 d6 2. Nh3 f5 … Ba4 20. Rfe1 g5 21. Re7 g4
1. e4 d6 2. Nh3 f5 3. Bb5 c6 4. Ng5 g6 5. Nf7 Qd7 6. d4 h5 7. Bxc6 Bh6 8. Bg5 Nf6 9. Nd8 Be6 10. c4 O-O 11. Nxb7 Bc8 12. f3 a6 13. Qa4 a5 14. Qc6 Nxe4 15. Qb6 Bxg5 16. Nc3 Ba6 17. Nd5 Rc8 18. O-O Bb5 19. Nxe7 Ba4 20. Rfe1 g5 21. Re7 g4