72.4M
positions
13.4M
practically solved
259.30T
engine nodes
2.0M
analyses
7,882
in queue
11
active workers
72
active cores
0
nodes / sec
23.9
positions / min
82
proof number
3,797
disproof number
Root conquest: 0/20 first moves solved · 18.5% of tree positions solved · last 24h: 467,151 closures, 4.80T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 79 over 203 open obligations, of which 33 (16.3%) 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 27.8m (median of 167) · measured at 2026-10-02 08:00 UTC
Closures by source, last 24h (467055 of 467085 labelled): USER 99.8% (466090) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.2% (965) · last 7d (3025297 of 3025340): USER 98.5% (2980356) · FILL 0.3% (8795) · AUTO 1.1% (32065) · SOLVE 0.0% (0) · NONE 0.1% (4081). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. Nh3 e6 2. e3 g6 … 17. d3 Nb4 18. cxb4 Ba6 19. Rfd1 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nh3 e6 2. e3 g6 … 17. d3 Nb4 18. cxb4 Ba6 19. Rfc1 (User) · 128.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Nf6 13. Bb5 Kg7 14. Qd2 Rd8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … Nf6 13. Bb5 Kg7 14. Qd2 Re8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … Nf6 13. Bb5 Kg7 14. Qd2 Rf8 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#2
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 | 1075 | 2 | |
| g1h3 | unsolved | 746 | 2 | |
| e2e3 | unsolved | 488 | 3 | |
| d2d4 | unsolved | 439 | 2 | |
| e2e4 | unsolved | 417 | 2 | |
| b1c3 | unsolved | 120 | 2 | |
| c2c3 | unsolved | 0 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | 0 | 3 | |
| b1a3 | unsolved | 0 | 3 | |
| h2h3 | unsolved | -97 | 2 | |
| d2d3 | unsolved | -98 | 2 | |
| a2a3 | unsolved | -100 | 2 | |
| f2f3 | unsolved | -117 | 3 | |
| b2b3 | unsolved | -144 | 1 | |
| f2f4 | unsolved | -305 | 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 31.6% of the fleet | 1.52T | 12,009 |
| 2 | auranvesdranor 21.9% of the fleet | 1.05T | 8,054 |
| 3 | tenzink 13.4% of the fleet | 645.62B | 4,689 |
| 4 | randomchampgamer 13.1% of the fleet | 626.75B | 4,894 |
| 5 | RickEdinson 9.3% of the fleet | 444.38B | 3,221 |
| 6 | MoNiKaMaDnEsS 8.2% of the fleet | 392.98B | 3,001 |
| 7 | quasa 2.5% of the fleet | 120.64B | 937 |
7 accounts · 4.80T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 34.8% of the fleet | 90.30T | 751,082 |
| 2 | tenzink 15.0% of the fleet | 39.02T | 323,550 |
| 3 | BManBJ 12.8% of the fleet | 33.22T | 233,578 |
| 4 | auranvesdranor 11.9% of the fleet | 30.90T | 224,203 |
| 5 | randomchampgamer 4.6% of the fleet | 11.86T | 88,120 |
| 6 | JackIV 3.9% of the fleet | 10.06T | 67,859 |
| 7 | RickEdinson 3.0% of the fleet | 7.71T | 51,562 |
| 8 | gannet 2.8% of the fleet | 7.24T | 46,848 |
| 9 | MoNiKaMaDnEsS 2.0% of the fleet | 5.17T | 34,516 |
| 10 | NeoArcturus 1.6% of the fleet | 4.09T | 16,758 |
and 25 more.
35 accounts · 259.46T 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 · 16 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 · 4 votes
- Refuting 1... d61. Nf3 d6 2. Nc3proposed by randomchampgamer · 3 votes
- The weaker of the two f-pawn advances for 1. ...d61. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4proposed by MoNiKaMaDnEsS · 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 21 proposals · see every proposal
Milestones
- Oct 02 09:00 Solved: WHITE_WIN via MINIMAXview
1. Na3 e5 2. Nf3 Qg5 … Nh6 7. e4 Bc5 8. d4 Nf7
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Nf5 13. Qe4 Rc4 14. Qe7 Kc8
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5 Nd6 12. Qg4 Nf5 13. Qe4 Rc4 14. Qe7 Kc8 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 12. Qg4 Nf5 13. Qe4 Rc4 14. Qe7
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5 Nd6 12. Qg4 Nf5 13. Qe4 Rc4 14. Qe7 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Nd6 12. Qg4 Nf5 13. Qe4 Rc4
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5 Nd6 12. Qg4 Nf5 13. Qe4 Rc4 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 11. dxe5 Nd6 12. Qg4 Nf5 13. Qe4
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5 Nd6 12. Qg4 Nf5 13. Qe4 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Rc8 11. dxe5 Nd6 12. Qg4 Nf5
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5 Nd6 12. Qg4 Nf5 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 10. exd5 Rc8 11. dxe5 Nd6 12. Qg4
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5 Nd6 12. Qg4 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Kd8 10. exd5 Rc8 11. dxe5 Nd6
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5 Nd6 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 11. dxe5 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Nf7 9. Bb5 Kd8 10. exd5 Rc8
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 Rc8 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … 8. d4 Nf7 9. Bb5 Kd8 10. exd5
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8 10. exd5 - Oct 02 09:00 Solved: WHITE_WIN via MATE_PVview
1. Na3 e5 2. Nf3 Qg5 … Bc5 8. d4 Nf7 9. Bb5 Kd8
1. Na3 e5 2. Nf3 Qg5 3. Nxg5 d6 4. Nb5 f6 5. Nxc7 d5 6. c3 Nh6 7. e4 Bc5 8. d4 Nf7 9. Bb5 Kd8