81.6M
positions
15.7M
practically solved
297.28T
engine nodes
2.3M
analyses
911
in queue
6
active workers
34
active cores
11.7M
nodes / sec
9.0
positions / min
85
proof number
4,552
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 96,500 closures, 4.92T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 218 open obligations, of which 41 (18.8%) 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 2.8m (median of 7) · measured at 2026-10-11 14:00 UTC
Closures by source, last 24h (96500 of 96500 labelled): USER 81.7% (78887) · FILL 0.6% (625) · AUTO 17.5% (16931) · SOLVE 0.0% (0) · NONE 0.1% (57) · last 7d (1640484 of 1640484): USER 98.0% (1607637) · FILL 0.2% (2696) · AUTO 1.8% (28883) · SOLVE 0.0% (0) · NONE 0.1% (1268). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. g4 e6 2. Nf3 f6 … Bb4 6. e5 fxe5 7. Ng5 Na6 (User) · 10.00B nodes · BManBJ-Blake-atomicdb
- 1. Nh3 e6 2. e3 h6 … a5 17. Kh1 Rf8 18. Rg1 Nd8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nh3 d5 2. Nc3 h6 … fxe4 16. f5 Qe8 17. Bg2 Nc7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. d4 d5 2. Nc3 Na6 3. Nb5 Nf6 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nh3 e6 2. e3 h6 … a5 17. Kh1 Rf8 18. Rg1 Nh6 (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 | 1078 | 2 | |
| g1h3 | unsolved | 753 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 389 | 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 53.3% of the fleet | 2.62T | 18,593 |
| 2 | BManBJ 23.6% of the fleet | 1.16T | 9,369 |
| 3 | randomchampgamer 11.8% of the fleet | 579.96B | 3,776 |
| 4 | RickEdinson 7.7% of the fleet | 377.72B | 2,890 |
| 5 | MoNiKaMaDnEsS 3.6% of the fleet | 178.87B | 1,907 |
5 accounts · 4.92T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 30.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.6% of the fleet | 46.43T | 323,799 |
| 3 | tenzink 14.4% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.6% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.0% of the fleet | 17.91T | 129,343 |
| 6 | RickEdinson 4.0% of the fleet | 11.89T | 78,883 |
| 7 | Torom 4.0% of the fleet | 11.88T | 87,075 |
| 8 | JackIV 3.4% of the fleet | 10.06T | 67,859 |
| 9 | gannet 2.4% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.3% of the fleet | 6.80T | 46,031 |
and 25 more.
35 accounts · 297.35T 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 11 14:57 Solved: WHITE_WIN via MINIMAXview
1. Nh3 e6 2. e3 g6 … a5 17. Kh1 Rf8 18. Rg1 fxg4
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … Ke8 34. Rf8 Kd7 35. Rd8 Ke6
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7 Kf8 33. Rf7 Ke8 34. Rf8 Kd7 35. Rd8 Ke6 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … 33. Rf7 Ke8 34. Rf8 Kd7 35. Rd8
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7 Kf8 33. Rf7 Ke8 34. Rf8 Kd7 35. Rd8 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … Kf8 33. Rf7 Ke8 34. Rf8 Kd7
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7 Kf8 33. Rf7 Ke8 34. Rf8 Kd7 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … 32. Re7 Kf8 33. Rf7 Ke8 34. Rf8
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7 Kf8 33. Rf7 Ke8 34. Rf8 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … Ke8 32. Re7 Kf8 33. Rf7 Ke8
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7 Kf8 33. Rf7 Ke8 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … 31. Rg7 Ke8 32. Re7 Kf8 33. Rf7
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7 Kf8 33. Rf7 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … Kf7 31. Rg7 Ke8 32. Re7 Kf8
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7 Kf8 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 32. Re7 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … Kg6 30. Rg8 Kf7 31. Rg7 Ke8
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 Ke8 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7 31. Rg7 - Oct 11 14:57 Solved: WHITE_WIN via MATE_PVview
1. Nh3 e6 2. e3 g6 … Kf7 29. Rf8 Kg6 30. Rg8 Kf7
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 f5 7. Ng7 Kf8 8. Qf4 Qh4 9. Qxh4 h5 10. f4 d5 11. h4 b6 12. g3 Nh6 13. d3 Kg8 14. Bg2 Kh7 15. g4 Nf7 16. O-O a5 17. Kh1 Rf8 18. Rg1 fxg4 19. Be4 Kh8 20. Bxg6 Rf5 21. Rg8 Kh7 22. Bd2 e5 23. Rag1 Rg5 24. hxg5 Bg4 25. f5 Bf3 26. Kh2 Bg2 27. Rh8 Kg7 28. f6 Kf7 29. Rf8 Kg6 30. Rg8 Kf7