79.4M
positions
15.3M
practically solved
286.58T
engine nodes
2.2M
analyses
7,246
in queue
6
active workers
34
active cores
9.8M
nodes / sec
12.3
positions / min
82
proof number
4,106
disproof number
Root conquest: 0/20 first moves solved · 19.2% of tree positions solved · last 24h: 164,451 closures, 4.29T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 69 over 217 open obligations, of which 41 (18.9%) 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 2.9m (median of 54) · measured at 2026-10-09 05:00 UTC
Closures by source, last 24h (164451 of 164451 labelled): USER 92.2% (151549) · FILL 0.6% (908) · AUTO 7.3% (11927) · SOLVE 0.0% (0) · NONE 0.0% (67) · last 7d (1697690 of 1697690): USER 99.0% (1680129) · FILL 0.1% (2071) · AUTO 0.7% (11952) · SOLVE 0.0% (0) · NONE 0.2% (3538). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nf3 d6 2. Ng5 f5 … 12. e5 Nh7 13. Qe1 Kg8 14. exd6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 f6 2. d4 Na6 … g6 6. Bb5 c6 7. O-O Qb6 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 f6 2. e4 e6 … Rd8 27. c5 Ba4 28. b3 d4 (User) · 512.0M nodes · BManBJ-Blake-atomicdb#2
- 1. Nf3 d6 2. Ng5 f6 … Rxh7 7. e4 Rd8 8. d4 e5 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f6 … Rxh7 7. e4 Rd8 8. d4 f5 (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 | 1043 | 2 | |
| g1h3 | unsolved | 820 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 400 | 2 | |
| d2d4 | unsolved | 364 | 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 36.9% of the fleet | 1.58T | 13,561 |
| 2 | BManBJ 34.5% of the fleet | 1.48T | 10,363 |
| 3 | randomchampgamer 15.2% of the fleet | 653.35B | 4,517 |
| 4 | RickEdinson 10.0% of the fleet | 429.40B | 2,913 |
| 5 | MoNiKaMaDnEsS 3.3% of the fleet | 141.27B | 1,281 |
| 6 | soothdest 0.1% of the fleet | 2.73B | 31 |
| 7 | NeoArcturus <0.1% of the fleet | 546.0M | 5 |
7 accounts · 4.29T 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 15.1% of the fleet | 43.36T | 303,803 |
| 3 | tenzink 14.9% of the fleet | 42.83T | 349,427 |
| 4 | auranvesdranor 11.0% of the fleet | 31.40T | 228,002 |
| 5 | randomchampgamer 5.7% of the fleet | 16.41T | 120,385 |
| 6 | RickEdinson 3.8% of the fleet | 10.90T | 72,815 |
| 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 · 286.67T 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 05:55 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f6 … Rxh7 7. e4 Rd8 8. d4 a4
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … Ke8 15. Qd3 f3 16. Qh7 fxg2
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3 f4 14. Bxc4 Ke8 15. Qd3 f3 16. Qh7 fxg2 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 14. Bxc4 Ke8 15. Qd3 f3 16. Qh7
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3 f4 14. Bxc4 Ke8 15. Qd3 f3 16. Qh7 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … f4 14. Bxc4 Ke8 15. Qd3 f3
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3 f4 14. Bxc4 Ke8 15. Qd3 f3 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 13. Qf3 f4 14. Bxc4 Ke8 15. Qd3
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3 f4 14. Bxc4 Ke8 15. Qd3 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … Rc4 13. Qf3 f4 14. Bxc4 Ke8
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3 f4 14. Bxc4 Ke8 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 12. Qe2 Rc4 13. Qf3 f4 14. Bxc4
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3 f4 14. Bxc4 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … f5 12. Qe2 Rc4 13. Qf3 f4
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3 f4 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 13. Qf3 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … Kd8 11. Bxg7 f5 12. Qe2 Rc4
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 Rc4 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … 10. e5 Kd8 11. Bxg7 f5 12. Qe2
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5 12. Qe2 - Oct 09 05:55 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f6 … Rc8 10. e5 Kd8 11. Bxg7 f5
1. Nf3 d6 2. Ng5 f6 3. Na3 a5 4. Nb5 e6 5. Nxc7 h5 6. Nh7 Rxh7 7. e4 Rd8 8. d4 a4 9. Bh6 Rc8 10. e5 Kd8 11. Bxg7 f5