82.6M
positions
15.8M
practically solved
302.16T
engine nodes
2.3M
analyses
237
in queue
6
active workers
34
active cores
8.0M
nodes / sec
10.1
positions / min
85
proof number
4,552
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 80,392 closures, 4.57T 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 2.1d (median of 1) · measured at 2026-10-12 17:00 UTC
Closures by source, last 24h (80325 of 80325 labelled): USER 98.9% (79454) · FILL 0.3% (240) · AUTO 0.7% (598) · SOLVE 0.0% (0) · NONE 0.0% (33) · last 7d (1479164 of 1479231): USER 97.8% (1446308) · FILL 0.2% (2936) · AUTO 2.0% (29481) · SOLVE 0.0% (0) · NONE 0.0% (439). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nh3 d5 2. Nc3 h6 … g6 8. Nf7 Qe7 9. Nd6 Qxd6 (User) · 512.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Ng4 8. f3 Nf2 9. O-O d5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … 8. Nd5 e6 9. f3 h6 10. d4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 f6 2. e4 e6 … 16. a4 e5 17. d4 Rd8 18. b4 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Ng4 8. f3 Nf2 9. O-O b6 (User) · 128.0M nodes · MoNiKaMaDnEsS-DESKTOP-VG9VPVH-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 | 1107 | 2 | |
| g1h3 | unsolved | 747 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 393 | 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 55.1% of the fleet | 2.52T | 17,773 |
| 2 | BManBJ 28.7% of the fleet | 1.31T | 8,038 |
| 3 | RickEdinson 9.3% of the fleet | 424.66B | 2,533 |
| 4 | randomchampgamer 3.8% of the fleet | 173.38B | 1,043 |
| 5 | MoNiKaMaDnEsS 3.1% of the fleet | 142.57B | 937 |
5 accounts · 4.57T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 29.9% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 15.9% of the fleet | 47.93T | 333,030 |
| 3 | tenzink 14.2% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 10.4% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 6.0% of the fleet | 18.16T | 130,741 |
| 6 | Torom 4.8% of the fleet | 14.40T | 104,848 |
| 7 | RickEdinson 4.1% of the fleet | 12.37T | 81,732 |
| 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 | 6.95T | 46,968 |
and 25 more.
35 accounts · 302.24T 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 12 17:52 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Ng4 8. f3 Nf2 9. O-O Kd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Ng4 8. f3 Nf2 9. O-O Kd7 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nf2 9. O-O Kd7 10. Nd5 Nxd1
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Ng4 8. f3 Nf2 9. O-O Kd7 10. Nd5 Nxd1 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 8. f3 Nf2 9. O-O Kd7 10. Nd5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Ng4 8. f3 Nf2 9. O-O Kd7 10. Nd5 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nf2 9. O-O Kd7 10. Qe1 cxb5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Ng4 8. f3 Nf2 9. O-O Kd7 10. Qe1 cxb5 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 8. f3 Nf2 9. O-O Kd7 10. Qe1
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Ng4 8. f3 Nf2 9. O-O Kd7 10. Qe1 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nf2 9. O-O Kd7 10. Qe2 cxb5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Ng4 8. f3 Nf2 9. O-O Kd7 10. Qe2 cxb5 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 8. f3 Nf2 9. O-O Kd7 10. Qe2
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Ng4 8. f3 Nf2 9. O-O Kd7 10. Qe2 - Oct 12 17:52 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … g6 11. Nxc7 h6 12. Qe2 Rg8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 Rg8 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Ke7 18. Bf4 d5 19. Re1 Kd7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 Rg8 13. O-O Bg7 14. Nd8 Rf8 15. Nxe6 Be5 16. dxe5 Rxf3 17. Rf8 Ke7 18. Bf4 d5 19. Re1 Kd7 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 17. Rf8 Ke7 18. Bf4 d5 19. Re1
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 Rg8 13. O-O Bg7 14. Nd8 Rf8 15. Nxe6 Be5 16. dxe5 Rxf3 17. Rf8 Ke7 18. Bf4 d5 19. Re1 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Rxf3 17. Rf8 Ke7 18. Bf4 d5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 Rg8 13. O-O Bg7 14. Nd8 Rf8 15. Nxe6 Be5 16. dxe5 Rxf3 17. Rf8 Ke7 18. Bf4 d5 - Oct 12 17:52 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. dxe5 Rxf3 17. Rf8 Ke7 18. Bf4
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 Na6 8. Nd5 e6 9. f3 Nc7 10. d4 g6 11. Nxc7 h6 12. Qe2 Rg8 13. O-O Bg7 14. Nd8 Rf8 15. Nxe6 Be5 16. dxe5 Rxf3 17. Rf8 Ke7 18. Bf4