80.5M
positions
15.6M
practically solved
292.20T
engine nodes
2.2M
analyses
2,265
in queue
7
active workers
42
active cores
0
nodes / sec
7.9
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.3% of tree positions solved · last 24h: 204,651 closures, 4.40T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 220 open obligations, of which 41 (18.6%) 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 1.4d (median of 4) · measured at 2026-10-10 13:00 UTC
Closures by source, last 24h (204651 of 204651 labelled): USER 100.0% (204597) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (54) · last 7d (1662882 of 1662882): USER 99.0% (1646607) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.1% (2252). 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 … d5 11. exd5 Qd5 12. Qa3 Qe6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. e4 e6 … h4 16. e5 Qxc4 17. c4 b4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. Nc3 Nh6 … d5 11. exd5 Qd5 12. Qa3 Qd7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. Nc3 Nh6 … e6 5. e4 g6 6. Ng5 a5 (User) · 10.00B nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-atomicdb
- 1. Nf3 f6 2. Nc3 Nh6 … d5 11. exd5 Qd5 12. Qa3 Qd8 (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 | 1088 | 2 | |
| g1h3 | unsolved | 821 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 387 | 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 35.1% of the fleet | 1.54T | 10,453 |
| 2 | BManBJ 30.7% of the fleet | 1.35T | 7,009 |
| 3 | randomchampgamer 15.3% of the fleet | 673.29B | 3,484 |
| 4 | RickEdinson 9.9% of the fleet | 436.63B | 2,170 |
| 5 | MoNiKaMaDnEsS 9.0% of the fleet | 395.80B | 2,031 |
| 6 | soothdest <0.1% of the fleet | 8.0M | 17 |
6 accounts · 4.39T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 30.9% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.5% of the fleet | 45.22T | 314,274 |
| 3 | tenzink 14.7% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.7% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.9% of the fleet | 17.31T | 125,449 |
| 6 | RickEdinson 3.9% of the fleet | 11.50T | 75,906 |
| 7 | JackIV 3.4% of the fleet | 10.06T | 67,859 |
| 8 | Torom 3.2% of the fleet | 9.26T | 68,482 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.3% of the fleet | 6.60T | 44,056 |
and 25 more.
35 accounts · 292.32T 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 · 17 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 10 13:56 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. e4 c6 … d5 11. exd5 Qd5 12. Qa3 Qc6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Bf4 20. Qd5 e6 21. Qd7 Bxh2
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1 Rc8 19. c3 Bf4 20. Qd5 e6 21. Qd7 Bxh2 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 19. c3 Bf4 20. Qd5 e6 21. Qd7
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1 Rc8 19. c3 Bf4 20. Qd5 e6 21. Qd7 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Rc8 19. c3 Bf4 20. Qd5 e6
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1 Rc8 19. c3 Bf4 20. Qd5 e6 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 18. Kd1 Rc8 19. c3 Bf4 20. Qd5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1 Rc8 19. c3 Bf4 20. Qd5 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Bd2 18. Kd1 Rc8 19. c3 Bf4
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1 Rc8 19. c3 Bf4 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 17. Qf3 Bd2 18. Kd1 Rc8 19. c3
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1 Rc8 19. c3 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Bh6 17. Qf3 Bd2 18. Kd1 Rc8
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1 Rc8 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 18. Kd1 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Qe6 16. Bxe6 Bh6 17. Qf3 Bd2
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3 Bd2 - Oct 10 13:56 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. e4 c6 … d5 11. exd5 Qd5 12. Qa3 Qb5
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qb5 - Oct 10 13:56 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3
1. Nf3 f6 2. e4 c6 3. Nc3 g6 4. g4 Nh6 5. d4 Nxg4 6. Qh5 d6 7. Nd5 cxd5 8. Qb5 Nc6 9. Qb6 Kf7 10. Qb3 d5 11. exd5 Qd5 12. Qa3 Qc6 13. Bg5 Kg8 14. Bc4 Be6 15. Bxf6 Qe6 16. Bxe6 Bh6 17. Qf3