103.1M
positions
21.7M
practically solved
379.31T
engine nodes
2.8M
analyses
60
in queue
active workers
68
active cores
92.8M
nodes / sec
33.2
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.1% of tree positions solved · last 24h: 180,443 closures, 5.25T 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 7.2m (median of 46) · measured at 2026-10-29 17:00 UTC
Closures by source, last 24h (182575 of 182650 labelled): USER 96.9% (176941) · FILL 2.0% (3697) · AUTO 1.0% (1824) · SOLVE 0.0% (0) · NONE 0.1% (113) · last 7d (1944905 of 1944907): USER 98.7% (1918937) · FILL 0.5% (9168) · AUTO 0.8% (16257) · SOLVE 0.0% (0) · NONE 0.0% (543). 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 d6 2. Ng5 f5 … Na6 11. b4 c5 12. Nxh8 Rb8 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. Nf3 d6 2. Ng5 f5 … Na6 11. b4 c5 12. Nxh8 d5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Na6 11. b4 c5 12. Nxh8 cxd4 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … Na6 11. b4 c5 12. Nxh8 e5 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … 18. a3 d6 19. b3 Nb4 20. hxg5 (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 | 1220 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 469 | 3 | |
| d2d4 | unsolved | 405 | 2 | |
| e2e4 | unsolved | 401 | 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 56.5% of the fleet | 2.97T | 19,178 |
| 2 | BManBJ 32.0% of the fleet | 1.68T | 5,620 |
| 3 | RickEdinson 9.1% of the fleet | 479.22B | 3,178 |
| 4 | MoNiKaMaDnEsS 2.4% of the fleet | 123.86B | 837 |
4 accounts · 5.25T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.8% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 19.7% of the fleet | 74.82T | 516,300 |
| 3 | Torom 13.2% of the fleet | 50.23T | 361,551 |
| 4 | tenzink 11.3% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.3% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.3% of the fleet | 20.23T | 132,683 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.1% of the fleet | 11.84T | 81,445 |
| 9 | JackIV 2.7% of the fleet | 10.06T | 67,859 |
| 10 | gannet 1.9% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 379.49T 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 29 17:36 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Bc5 16. b3 g6 17. Qa6 e3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 g6 17. Qa6 e3 - Oct 29 17:36 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … 16. b3 g6 17. Qa6 e3 18. Ba3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 g6 17. Qa6 e3 18. Ba3 - Oct 29 17:36 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Bc5 16. b3 a5 17. Qc6 Kg8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 - Oct 29 17:36 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Bc5 16. b3 a5 17. Qc6 Rg8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Rg8 - Oct 29 17:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … g3 27. Rxf8 Kg6 28. f8=Q gxh2
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 18. b4 Bd6 19. f5 g5 20. f6 Kf7 21. bxa5 h6 22. Nc3 g4 23. Rb1 e3 24. Rb8 Kg6 25. f7 Kh7 26. Qxd6 g3 27. Rxf8 Kg6 28. f8=Q gxh2 - Oct 29 17:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 26. Qxd6 g3 27. Rxf8 Kg6 28. f8=Q
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 18. b4 Bd6 19. f5 g5 20. f6 Kf7 21. bxa5 h6 22. Nc3 g4 23. Rb1 e3 24. Rb8 Kg6 25. f7 Kh7 26. Qxd6 g3 27. Rxf8 Kg6 28. f8=Q - Oct 29 17:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kh7 26. Qxd6 g3 27. Rxf8 Kg6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 18. b4 Bd6 19. f5 g5 20. f6 Kf7 21. bxa5 h6 22. Nc3 g4 23. Rb1 e3 24. Rb8 Kg6 25. f7 Kh7 26. Qxd6 g3 27. Rxf8 Kg6 - Oct 29 17:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 25. f7 Kh7 26. Qxd6 g3 27. Rxf8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 18. b4 Bd6 19. f5 g5 20. f6 Kf7 21. bxa5 h6 22. Nc3 g4 23. Rb1 e3 24. Rb8 Kg6 25. f7 Kh7 26. Qxd6 g3 27. Rxf8 - Oct 29 17:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kg6 25. f7 Kh7 26. Qxd6 g3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 18. b4 Bd6 19. f5 g5 20. f6 Kf7 21. bxa5 h6 22. Nc3 g4 23. Rb1 e3 24. Rb8 Kg6 25. f7 Kh7 26. Qxd6 g3 - Oct 29 17:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 24. Rb8 Kg6 25. f7 Kh7 26. Qxd6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 18. b4 Bd6 19. f5 g5 20. f6 Kf7 21. bxa5 h6 22. Nc3 g4 23. Rb1 e3 24. Rb8 Kg6 25. f7 Kh7 26. Qxd6 - Oct 29 17:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e3 24. Rb8 Kg6 25. f7 Kh7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 18. b4 Bd6 19. f5 g5 20. f6 Kf7 21. bxa5 h6 22. Nc3 g4 23. Rb1 e3 24. Rb8 Kg6 25. f7 Kh7 - Oct 29 17:36 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 23. Rb1 e3 24. Rb8 Kg6 25. f7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Na6 7. Nd8 e5 8. Nxb7 Nf6 9. f4 e4 10. Bxc6 Be7 11. Qe2 O-O 12. Qb5 d5 13. d4 Nd7 14. Ke2 Kh8 15. Rf1 Bc5 16. b3 a5 17. Qc6 Kg8 18. b4 Bd6 19. f5 g5 20. f6 Kf7 21. bxa5 h6 22. Nc3 g4 23. Rb1 e3 24. Rb8 Kg6 25. f7