103.4M
positions
21.8M
practically solved
381.08T
engine nodes
2.8M
analyses
206
in queue
active workers
36
active cores
34.6M
nodes / sec
10.2
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.1% of tree positions solved · last 24h: 217,568 closures, 4.59T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 71 over 200 open obligations, of which 36 (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 11.7m (median of 83) · measured at 2026-10-30 07:00 UTC
Closures by source, last 24h (217568 of 217568 labelled): USER 97.2% (211524) · FILL 1.9% (4167) · AUTO 0.8% (1824) · SOLVE 0.0% (0) · NONE 0.0% (53) · last 7d (1464764 of 1464764): USER 98.2% (1438331) · FILL 0.7% (9638) · AUTO 1.1% (16257) · SOLVE 0.0% (0) · NONE 0.0% (538). 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. Nf3 f6 2. e4 e6 … 13. g4 Nh6 14. Qd5 d6 15. a5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 f6 2. e4 e6 … gxh4 15. g4 Qxc4 16. Rg1 Ba3 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. e4 e6 … 13. g4 Nh6 14. Qd5 d6 15. Qc6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … 13. g4 Nh6 14. Qd5 d6 15. Nh2 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … g4 13. g3 Qxc4 14. b4 h5 (User) · 128.0M nodes · RickEdinson-MSI-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 | 1165 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 469 | 3 | |
| e2e4 | unsolved | 410 | 2 | |
| d2d4 | unsolved | 405 | 2 | |
| b1c3 | unsolved | 141 | 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 | Torom 48.1% of the fleet | 2.21T | 13,525 |
| 2 | BManBJ 36.5% of the fleet | 1.68T | 5,655 |
| 3 | RickEdinson 10.2% of the fleet | 466.95B | 3,110 |
| 4 | MoNiKaMaDnEsS 5.2% of the fleet | 240.55B | 1,743 |
4 accounts · 4.59T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.7% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 19.9% of the fleet | 75.80T | 519,638 |
| 3 | Torom 13.3% of the fleet | 50.55T | 363,522 |
| 4 | tenzink 11.2% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.2% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.4% of the fleet | 20.50T | 134,546 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.1% of the fleet | 11.95T | 82,351 |
| 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 · 381.17T 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 30 07:48 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Nc7 10. d4 g6 11. Nxc7 Be7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 Be7 - Oct 30 07:48 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … 10. d4 g6 11. Nxc7 Be7 12. Bh6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 Be7 12. Bh6 - Oct 30 07:48 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … g6 11. Nxc7 Be7 12. Bh6 Ng8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 Be7 12. Bh6 Ng8 - Oct 30 07:48 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … 11. Nxc7 Be7 12. Bh6 Ng8 13. Nxd6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 Be7 12. Bh6 Ng8 13. Nxd6 - Oct 30 07:48 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … h6 12. Qe2 Be7 13. Nxh8 a6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 Be7 13. Nxh8 a6 - Oct 30 07:48 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … 12. Qe2 Be7 13. Nxh8 a6 14. O-O
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 Be7 13. Nxh8 a6 14. O-O - Oct 30 07:48 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … g6 11. Nxc7 h6 12. Qe2 d5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 d5 - Oct 30 07:48 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … 11. Nxc7 h6 12. Qe2 d5 13. Nd6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 d5 13. Nd6 - Oct 30 07:48 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Ke8 30. Rd8 Kf7 31. Rf8 Kg6
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O axb5 9. Qd3 Qb6 10. Qa6 Qxa6 11. a4 g5 12. Kh1 d6 13. b4 d5 14. a5 dxe4 15. c4 g4 16. d5 b6 17. g3 e5 18. d6 Bb7 19. axb6 Kf7 20. Ra7 Rxa7 21. d7 Be7 22. Rd1 Nh6 23. d8=R Bxd8 24. Rd7 Ke8 25. Rd8 Ke7 26. b5 f5 27. Ba3 Ke6 28. Rd6 Ke7 29. Rd7 Ke8 30. Rd8 Kf7 31. Rf8 Kg6 - Oct 30 07:48 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 29. Rd7 Ke8 30. Rd8 Kf7 31. Rf8
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O axb5 9. Qd3 Qb6 10. Qa6 Qxa6 11. a4 g5 12. Kh1 d6 13. b4 d5 14. a5 dxe4 15. c4 g4 16. d5 b6 17. g3 e5 18. d6 Bb7 19. axb6 Kf7 20. Ra7 Rxa7 21. d7 Be7 22. Rd1 Nh6 23. d8=R Bxd8 24. Rd7 Ke8 25. Rd8 Ke7 26. b5 f5 27. Ba3 Ke6 28. Rd6 Ke7 29. Rd7 Ke8 30. Rd8 Kf7 31. Rf8 - Oct 30 07:48 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … Ke7 29. Rd7 Ke8 30. Rd8 Kf7
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O axb5 9. Qd3 Qb6 10. Qa6 Qxa6 11. a4 g5 12. Kh1 d6 13. b4 d5 14. a5 dxe4 15. c4 g4 16. d5 b6 17. g3 e5 18. d6 Bb7 19. axb6 Kf7 20. Ra7 Rxa7 21. d7 Be7 22. Rd1 Nh6 23. d8=R Bxd8 24. Rd7 Ke8 25. Rd8 Ke7 26. b5 f5 27. Ba3 Ke6 28. Rd6 Ke7 29. Rd7 Ke8 30. Rd8 Kf7 - Oct 30 07:48 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 e6 … 28. Rd6 Ke7 29. Rd7 Ke8 30. Rd8
1. Nf3 f6 2. e4 e6 3. d4 c6 4. Na3 g6 5. Nb5 cxb5 6. Bb5 Nc6 7. h3 a6 8. O-O axb5 9. Qd3 Qb6 10. Qa6 Qxa6 11. a4 g5 12. Kh1 d6 13. b4 d5 14. a5 dxe4 15. c4 g4 16. d5 b6 17. g3 e5 18. d6 Bb7 19. axb6 Kf7 20. Ra7 Rxa7 21. d7 Be7 22. Rd1 Nh6 23. d8=R Bxd8 24. Rd7 Ke8 25. Rd8 Ke7 26. b5 f5 27. Ba3 Ke6 28. Rd6 Ke7 29. Rd7 Ke8 30. Rd8