79.5M
positions
15.3M
practically solved
286.91T
engine nodes
2.2M
analyses
5,813
in queue
6
active workers
34
active cores
0
nodes / sec
15.0
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 184,145 closures, 3.89T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 69 over 216 open obligations, of which 40 (18.5%) 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 3.6h (median of 152) · measured at 2026-10-09 08:00 UTC
Closures by source, last 24h (184058 of 184058 labelled): USER 98.7% (181620) · FILL 0.1% (174) · AUTO 1.2% (2202) · SOLVE 0.0% (0) · NONE 0.0% (62) · last 7d (1685409 of 1685496): USER 99.0% (1667978) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.2% (3408). 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. e4 e6 … 22. Qe3 Qxe3 23. Rd1 Bd7 24. a4 (User) · 512.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. Nc3 a6 … a5 8. d4 Be7 9. Bh6 O-O-O (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. Nc3 a6 … a5 8. d4 Be7 9. Bh6 b6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f5 … Kd8 14. O-O b6 15. Qe1 Nb8 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Kd8 14. O-O b6 15. Qe1 Nc7 (User) · 128.0M 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 | 1070 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 376 | 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 | BManBJ 39.0% of the fleet | 1.52T | 9,647 |
| 2 | Torom 29.8% of the fleet | 1.16T | 7,825 |
| 3 | randomchampgamer 17.1% of the fleet | 665.89B | 4,470 |
| 4 | RickEdinson 11.4% of the fleet | 442.92B | 2,641 |
| 5 | MoNiKaMaDnEsS 2.6% of the fleet | 100.14B | 729 |
| 6 | soothdest 0.1% of the fleet | 2.73B | 31 |
| 7 | NeoArcturus <0.1% of the fleet | 546.0M | 5 |
7 accounts · 3.89T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 31.5% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.2% of the fleet | 43.56T | 305,194 |
| 3 | tenzink 14.9% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.9% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.7% of the fleet | 16.49T | 121,056 |
| 6 | RickEdinson 3.8% of the fleet | 10.96T | 73,166 |
| 7 | JackIV 3.5% of the fleet | 10.06T | 67,859 |
| 8 | Torom 2.6% of the fleet | 7.37T | 55,749 |
| 9 | gannet 2.5% of the fleet | 7.24T | 46,848 |
| 10 | MoNiKaMaDnEsS 2.2% of the fleet | 6.20T | 42,008 |
and 25 more.
35 accounts · 287.01T 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 22 proposals · see every proposal
Milestones
- Oct 09 08:57 Solved: WHITE_WIN via MINIMAXview
1. Nf3 f6 2. Nc3 a6 … a5 8. d4 Be7 9. Bh6 g5
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … Bh4 15. g3 f4 16. Qf7 Kd8
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 13. dxe6 f5 14. Qd5 Bh4 15. g3 f4 16. Qf7 Kd8 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … 14. Qd5 Bh4 15. g3 f4 16. Qf7
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 13. dxe6 f5 14. Qd5 Bh4 15. g3 f4 16. Qf7 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … f5 14. Qd5 Bh4 15. g3 f4
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 13. dxe6 f5 14. Qd5 Bh4 15. g3 f4 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … 13. dxe6 f5 14. Qd5 Bh4 15. g3
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 13. dxe6 f5 14. Qd5 Bh4 15. g3 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … g4 13. dxe6 f5 14. Qd5 Bh4
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 13. dxe6 f5 14. Qd5 Bh4 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … 12. e3 g4 13. dxe6 f5 14. Qd5
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 13. dxe6 f5 14. Qd5 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … Bd8 12. e3 g4 13. dxe6 f5
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 13. dxe6 f5 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … 11. Bf8 Bd8 12. e3 g4 13. dxe6
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 13. dxe6 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … Rc8 11. Bf8 Bd8 12. e3 g4
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 g4 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … 10. d5 Rc8 11. Bf8 Bd8 12. e3
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8 12. e3 - Oct 09 08:57 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 a6 … g5 10. d5 Rc8 11. Bf8 Bd8
1. Nf3 f6 2. Nc3 a6 3. Ne5 d6 4. Nf7 Qd7 5. Nd5 e6 6. Nxc7 g6 7. Nxh8 a5 8. d4 Be7 9. Bh6 g5 10. d5 Rc8 11. Bf8 Bd8