102.9M
positions
21.7M
practically solved
378.28T
engine nodes
2.8M
analyses
77
in queue
active workers
68
active cores
96.8M
nodes / sec
30.9
positions / min
107
proof number
4,824
disproof number
Root conquest: 0/20 first moves solved · 21.0% of tree positions solved · last 24h: 168,273 closures, 5.25T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 72 over 201 open obligations, of which 36 (17.9%) 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 3.4m (median of 120) · measured at 2026-10-29 14:00 UTC
Closures by source, last 24h (168194 of 168194 labelled): USER 96.9% (163048) · FILL 1.9% (3240) · AUTO 1.0% (1755) · SOLVE 0.0% (0) · NONE 0.1% (151) · last 7d (2017251 of 2017330): USER 98.7% (1991691) · FILL 0.4% (8750) · AUTO 0.8% (16266) · SOLVE 0.0% (0) · NONE 0.0% (544). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing all workers
- 1. e4 d6 2. Nh3 f5 … b4 13. c5 bxa3 14. b4 Ba6 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#0
- 1. e4 d6 2. Nh3 f5 … b4 13. c5 bxa3 14. b4 Bb7 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#1
- 1. e4 d6 2. Nh3 f5 … b4 13. c5 bxa3 14. b4 Bf5 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. e4 d6 2. Nh3 f5 … b4 13. c5 bxa3 14. b4 Be6 (User) · 512.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Be6 10. Nd5 Na6 11. d3 Kd8 (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 | 1237 | 2 | |
| g1h3 | unsolved | 766 | 2 | |
| e2e3 | unsolved | 469 | 3 | |
| d2d4 | unsolved | 405 | 2 | |
| e2e4 | unsolved | 401 | 2 | |
| b1c3 | unsolved | 138 | 2 | |
| b1a3 | unsolved | 0 | 3 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | -59 | 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 57.0% of the fleet | 2.99T | 19,257 |
| 2 | BManBJ 31.9% of the fleet | 1.68T | 5,618 |
| 3 | RickEdinson 9.1% of the fleet | 479.77B | 3,135 |
| 4 | MoNiKaMaDnEsS 2.0% of the fleet | 105.03B | 660 |
4 accounts · 5.25T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 23.9% of the fleet | 90.30T | 751,082 |
| 2 | BManBJ 19.7% of the fleet | 74.62T | 515,634 |
| 3 | Torom 13.1% of the fleet | 49.63T | 357,644 |
| 4 | tenzink 11.3% of the fleet | 42.83T | 349,427 |
| 5 | auranvesdranor 8.3% of the fleet | 31.40T | 228,002 |
| 6 | RickEdinson 5.3% of the fleet | 20.18T | 132,326 |
| 7 | randomchampgamer 5.2% of the fleet | 19.85T | 140,897 |
| 8 | MoNiKaMaDnEsS 3.1% of the fleet | 11.75T | 80,798 |
| 9 | JackIV 2.7% of the fleet | 10.06T | 67,859 |
| 10 | gannet 1.9% of the fleet | 7.24T | 46,848 |
and 25 more.
35 accounts · 378.53T 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 29 14:50 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Be6 10. Nd5 Na6 11. d3 cxb5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … b6 15. Qf6 Bxd5 16. Qd8 Kb7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 13. Bg5 Kc8 14. Qf3 b6 15. Qf6 Bxd5 16. Qd8 Kb7 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 14. Qf3 b6 15. Qf6 Bxd5 16. Qd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 13. Bg5 Kc8 14. Qf3 b6 15. Qf6 Bxd5 16. Qd8 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kc8 14. Qf3 b6 15. Qf6 Bxd5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 13. Bg5 Kc8 14. Qf3 b6 15. Qf6 Bxd5 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 13. Bg5 Kc8 14. Qf3 b6 15. Qf6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 13. Bg5 Kc8 14. Qf3 b6 15. Qf6 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kd8 13. Bg5 Kc8 14. Qf3 b6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 13. Bg5 Kc8 14. Qf3 b6 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 12. Bh6 Kd8 13. Bg5 Kc8 14. Qf3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 13. Bg5 Kc8 14. Qf3 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … cxb5 12. Bh6 Kd8 13. Bg5 Kc8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 13. Bg5 Kc8 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 11. d3 cxb5 12. Bh6 Kd8 13. Bg5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 13. Bg5 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Na6 11. d3 cxb5 12. Bh6 Kd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 Kd8 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 10. Nd5 Na6 11. d3 cxb5 12. Bh6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. Bh6 - Oct 29 14:50 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kc7 15. Qc4 Kd7 16. Qc8 Ke7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 c6 5. Bb5 Qe6 6. exf5 Nf6 7. Nc3 e5 8. Nxe5 g6 9. Qe2 Be6 10. Nd5 Na6 11. d3 cxb5 12. d4 a6 13. Nc7 Kd8 14. Nxe6 Kc7 15. Qc4 Kd7 16. Qc8 Ke7