82.9M
positions
15.8M
practically solved
303.50T
engine nodes
2.3M
analyses
399
in queue
14
active workers
74
active cores
0
nodes / sec
45.6
positions / min
85
proof number
4,552
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 82,416 closures, 2.81T 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 8.6m (median of 18) · measured at 2026-10-13 07:00 UTC
Closures by source, last 24h (82416 of 82416 labelled): USER 99.8% (82242) · FILL 0.1% (102) · AUTO 0.0% (15) · SOLVE 0.0% (0) · NONE 0.1% (57) · last 7d (1371308 of 1371308): USER 97.6% (1338674) · FILL 0.2% (2747) · AUTO 2.1% (29481) · SOLVE 0.0% (0) · NONE 0.0% (406). 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. Nc3 Nh6 … Qh4 9. Rg3 d6 10. Bd2 f3 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … Qh4 9. Rg3 d6 10. Bd2 d5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. e4 e6 … d5 13. b4 dxe4 14. b5 g5 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … b5 12. Qxb5 d5 13. a5 Bb4 (User) · 128.0M nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … Qh4 9. Rg3 d6 10. Bd2 e5 (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 | 1098 | 2 | |
| g1h3 | unsolved | 753 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 393 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| 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 48.5% of the fleet | 1.36T | 8,611 |
| 2 | Torom 25.6% of the fleet | 718.69B | 5,250 |
| 3 | RickEdinson 15.4% of the fleet | 431.91B | 2,780 |
| 4 | MoNiKaMaDnEsS 8.0% of the fleet | 225.00B | 1,568 |
| 5 | randomchampgamer 2.6% of the fleet | 72.00B | 529 |
5 accounts · 2.81T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.7% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.0% of the fleet | 48.70T | 338,194 |
| 3 | tenzink 14.1% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.3% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.0% of the fleet | 18.23T | 131,270 |
| 6 | Torom 4.8% of the fleet | 14.70T | 107,183 |
| 7 | RickEdinson 4.2% of the fleet | 12.62T | 83,523 |
| 8 | JackIV 3.3% 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 | 7.08T | 47,986 |
and 25 more.
35 accounts · 303.76T 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 13 07:50 Solved: BLACK_WIN via MINIMAXview
1. Nh3 f6 2. e4 d6 … 8. Rg1 Qh6 9. Kf1 Qe3 10. Qg4
1. Nh3 f6 2. e4 d6 3. Nc3 c6 4. Ng5 Qa5 5. Nxh7 Bh3 6. Rb1 Qc5 7. Bc4 Qg5 8. Rg1 Qh6 9. Kf1 Qe3 10. Qg4 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … h5 24. f4 Be2 25. Be7 h4
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. a4 Rxe1 21. Bf8 Nd8 22. d5 Bd3 23. b5 h5 24. f4 Be2 25. Be7 h4 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … Bb1 23. b5 g5 24. Be7 g4
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. a4 Rxe1 21. Bf8 Nd8 22. d5 Bb1 23. b5 g5 24. Be7 g4 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 h5 26. a6 Nc6
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 h5 26. a6 Nc6 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 h5 26. a6 h4
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 h5 26. a6 h4 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 h5 26. a6 g3
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 h5 26. a6 g3 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 h6 26. Be7 g3
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 h6 26. Be7 g3 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 g3 26. Be7 a6
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 g3 26. Be7 a6 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 h5 26. a6 Bg6
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 h5 26. a6 Bg6 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 Bg6 26. a6 h6
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 Bg6 26. a6 h6 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 Bg6 26. a6 g3
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 Bg6 26. a6 g3 - Oct 13 07:49 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Ne5 fxe5 … g4 25. a5 h6 26. a6 Nc6
1. Nf3 f6 2. Ne5 fxe5 3. e4 c6 4. Na3 d6 5. Nb5 cxb5 6. d4 Nc6 7. Bc4 e6 8. b4 Qa5 9. Bg5 Nf6 10. Bxe6 Qf5 11. Qf3 g6 12. Bh6 Be7 13. exf5 Bh4 14. O-O-O Bf5 15. c4 O-O-O 16. Qg3 Bxg3 17. Rde1 Rde8 18. Re3 Rxe3 19. Re1 Re8 20. Re7 Rxe7 21. d5 Nd8 22. Bf8 Be4 23. a4 g5 24. b5 g4 25. a5 h6 26. a6 Nc6