83.7M
positions
16.0M
practically solved
307.51T
engine nodes
2.3M
analyses
17
in queue
3
active workers
20
active cores
0
nodes / sec
8.2
positions / min
85
proof number
4,551
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 94,098 closures, 2.88T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 216 open obligations, of which 41 (19.0%) sit at or below dn 2, one unanswered question from falling over · 0 open nodes on impossible numbers · measured at 2026-10-14 10:00 UTC
Closures by source, last 24h (94084 of 94084 labelled): USER 99.8% (93888) · FILL 0.1% (68) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.1% (128) · last 7d (1193367 of 1193381): USER 97.2% (1160321) · FILL 0.3% (3077) · AUTO 2.5% (29472) · SOLVE 0.0% (0) · NONE 0.0% (497). 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 … h5 19. Rxe1 Kh7 20. b3 e3 (User) · 128.0M nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … g6 14. Qf3 Rf6 15. dxe5 Kd8 (User) · 128.0M nodes · randomchampgamer-2026PC-atomicdb
- 1. Nh3 d5 2. Nc3 h6 … 7. Qc1 Ne4 8. Kd1 g6 9. c3 (User) · 512.0M 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 | 1134 | 2 | |
| g1h3 | unsolved | 703 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 395 | 2 | |
| b1c3 | unsolved | 127 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| b2b4 | unsolved | -65 | 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 37.2% of the fleet | 1.07T | 5,447 |
| 2 | randomchampgamer 22.9% of the fleet | 658.92B | 2,678 |
| 3 | Torom 15.6% of the fleet | 448.89B | 2,819 |
| 4 | RickEdinson 12.3% of the fleet | 352.82B | 2,014 |
| 5 | MoNiKaMaDnEsS 12.0% of the fleet | 345.26B | 1,866 |
5 accounts · 2.88T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.4% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 16.2% of the fleet | 49.94T | 344,541 |
| 3 | tenzink 13.9% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.2% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.2% of the fleet | 18.96T | 134,288 |
| 6 | Torom 5.1% of the fleet | 15.70T | 113,354 |
| 7 | RickEdinson 4.2% of the fleet | 13.03T | 85,783 |
| 8 | JackIV 3.3% of the fleet | 10.06T | 67,859 |
| 9 | MoNiKaMaDnEsS 2.4% of the fleet | 7.50T | 50,268 |
| 10 | gannet 2.4% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 307.55T 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 14 10:41 Solved: WHITE_WIN via MINIMAXview
1. g4 e6 2. Nf3 f6 … g6 14. Qf3 Rf5 15. dxe5 Ke7
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … Kd6 20. Re6 Kd7 21. Rf7 Kd8
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5 c5 19. Rae1 Kd6 20. Re6 Kd7 21. Rf7 Kd8 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … 19. Rae1 Kd6 20. Re6 Kd7 21. Rf7
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5 c5 19. Rae1 Kd6 20. Re6 Kd7 21. Rf7 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … c5 19. Rae1 Kd6 20. Re6 Kd7
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5 c5 19. Rae1 Kd6 20. Re6 Kd7 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … 18. Nxd5 c5 19. Rae1 Kd6 20. Re6
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5 c5 19. Rae1 Kd6 20. Re6 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … Bc5 18. Nxd5 c5 19. Rae1 Kd6
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5 c5 19. Rae1 Kd6 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … 17. O-O Bc5 18. Nxd5 c5 19. Rae1
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5 c5 19. Rae1 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … Qxf4 17. O-O Bc5 18. Nxd5 c5
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5 c5 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 18. Nxd5 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … Ke7 16. Bf4 Qxf4 17. O-O Bc5
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O Bc5 - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4 17. O-O - Oct 14 10:41 Solved: WHITE_WIN via MATE_PVview
1. g4 e6 2. Nf3 f6 … Rf5 15. dxe5 Ke7 16. Bf4 Qxf4
1. g4 e6 2. Nf3 f6 3. Nc3 c6 4. d4 Nh6 5. e4 Bb4 6. e5 fxe5 7. Ng5 d5 8. h4 e5 9. Qe2 Nxg4 10. f3 Qc7 11. Bh3 Bg4 12. fxg4 Rf8 13. Qh5 g6 14. Qf3 Rf5 15. dxe5 Ke7 16. Bf4 Qxf4