65.1M
positions
11.6M
practically solved
233.37T
engine nodes
1.8M
analyses
7,514
in queue
10
active workers
64
active cores
14.8M
nodes / sec
18.7
positions / min
125
proof number
3,777
disproof number
Root conquest: 0/20 first moves solved · 17.8% of tree positions solved · last 24h: 302,363 closures, 3.36T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 81 over 192 open obligations, of which 30 (15.6%) 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 3.5m (median of 202) · measured at 2026-09-28 01:00 UTC
Closures by source, last 24h (302363 of 302363 labelled): USER 99.4% (300587) · FILL 0.2% (477) · AUTO 0.4% (1085) · SOLVE 0.0% (0) · NONE 0.1% (214) · last 7d (1336866 of 1336866): USER 96.8% (1294270) · FILL 0.7% (8795) · AUTO 2.4% (32065) · SOLVE 0.0% (0) · NONE 0.1% (1736). 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 … 9. a3 b6 10. axb4 Ba6 11. Rg1 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nh3 e6 2. e3 g6 … 9. a3 b6 10. axb4 Ba6 11. Ra4 (User) · 128.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … f4 11. Nxh8 Na6 12. a3 f3 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nf3 d6 2. Ng5 f5 … f4 11. Nxh8 Na6 12. a3 h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nf3 d6 2. Ng5 f5 … f4 11. Nxh8 Na6 12. a3 d5 (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 | 1002 | 2 | |
| g1h3 | unsolved | 810 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| d2d4 | unsolved | 435 | 2 | |
| e2e4 | unsolved | 417 | 2 | |
| b1c3 | unsolved | 183 | 2 | |
| c2c3 | unsolved | 19 | 2 | |
| g2g3 | unsolved | 0 | 2 | |
| b2b4 | unsolved | 0 | 3 | |
| b1a3 | unsolved | 0 | 3 | |
| h2h3 | unsolved | -100 | 2 | |
| a2a3 | unsolved | -103 | 2 | |
| f2f3 | unsolved | -110 | 2 | |
| d2d3 | unsolved | -116 | 2 | |
| b2b3 | unsolved | -119 | 1 | |
| f2f4 | unsolved | -301 | 3 | |
| h2h4 | unsolved | -500 | 2 | |
| a2a4 | unsolved | -502 | 2 | |
| g2g4 | unsolved | -600 | 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 36.7% of the fleet | 1.23T | 8,793 |
| 2 | auranvesdranor 26.4% of the fleet | 885.58B | 6,109 |
| 3 | randomchampgamer 16.9% of the fleet | 567.46B | 4,462 |
| 4 | tenzink 16.5% of the fleet | 555.24B | 3,584 |
| 5 | MoNiKaMaDnEsS 2.9% of the fleet | 98.75B | 664 |
| 6 | soothdest 0.5% of the fleet | 17.08B | 132 |
| 7 | rhaxier <0.1% of the fleet | 1.66B | 13 |
| 8 | bricerichmond <0.1% of the fleet | 700.3M | 6 |
8 accounts · 3.36T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 38.7% of the fleet | 90.30T | 751,082 |
| 2 | tenzink 15.6% of the fleet | 36.46T | 305,765 |
| 3 | BManBJ 11.5% of the fleet | 26.92T | 185,169 |
| 4 | auranvesdranor 11.3% of the fleet | 26.40T | 189,820 |
| 5 | JackIV 4.3% of the fleet | 10.06T | 67,859 |
| 6 | randomchampgamer 4.0% of the fleet | 9.26T | 67,319 |
| 7 | RickEdinson 2.8% of the fleet | 6.50T | 43,070 |
| 8 | MoNiKaMaDnEsS 1.8% of the fleet | 4.14T | 26,565 |
| 9 | NeoArcturus 1.8% of the fleet | 4.09T | 16,756 |
| 10 | ijh 1.5% of the fleet | 3.57T | 37,348 |
and 23 more.
33 accounts · 233.41T 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
- 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
- Is Nh3 h6 e3 e6 Nc3 a draw?1. Nh3 e6 2. e3 h6 3. Nc3proposed by soothdest · 3 votes
Showing the 6 most voted of 21 proposals · see every proposal
Milestones
- Sep 28 01:17 Solved: BLACK_WIN via MINIMAXview
1. Nh3 e6 2. e3 g6 … 9. a3 b6 10. axb4 Ba6 11. Ra5
1. Nh3 e6 2. e3 g6 3. Nc3 h6 4. Nf4 Bb4 5. Nh5 c6 6. Qf3 Nf6 7. Ng7 Kf8 8. d4 Kg8 9. a3 b6 10. axb4 Ba6 11. Ra5 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Kh7 12. Bb2 Bd8 13. Bf7 h4
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Kh7 12. Bb2 Bd8 13. Bf7 h4 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Kh7 12. Bb2 Bd8 13. Bf7 f4
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Kh7 12. Bb2 Bd8 13. Bf7 f4 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Bd8 13. Bf7 g5 14. Bg8 Kg6
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Kh7 12. Bb2 Bd8 13. Bf7 g5 14. Bg8 Kg6 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … 12. Bb2 Bd8 13. Bf7 g5 14. Bg8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Kh7 12. Bb2 Bd8 13. Bf7 g5 14. Bg8 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Kh7 12. Bb2 Bd8 13. Bf7 g5
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Kh7 12. Bb2 Bd8 13. Bf7 g5 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Kh8 13. Bb2 Bf6 14. Bxe6 Re8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Bd8 12. Bf7 Kh8 13. Bb2 Bf6 14. Bxe6 Re8 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Bd8 13. Bf7 Bf6 14. Bg8 Kh8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Kh7 12. Bb2 Bd8 13. Bf7 Bf6 14. Bg8 Kh8 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … 12. Bb2 Bd8 13. Bf7 Bf6 14. Bg8
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Kh7 12. Bb2 Bd8 13. Bf7 Bf6 14. Bg8 - Sep 28 01:17 Solved: WHITE_WIN via MATE_PVview
1. Nf3 f6 2. Nc3 d6 … Kh7 12. Bb2 Bd8 13. Bf7 Bf6
1. Nf3 f6 2. Nc3 d6 3. Nb5 e6 4. Ng5 h6 5. Nh7 Rxh7 6. Nxc7 Be7 7. e3 h5 8. Bb5 Kf8 9. c4 f5 10. Be8 Kg8 11. b4 Kh7 12. Bb2 Bd8 13. Bf7 Bf6 - Sep 28 01:17 Solved: BLACK_WIN via MATE_PVview
1. Nf3 e5 2. Ng5 f5 … 11. Qd2 Qh4 12. Kd1 Qe1 13. Kc2
1. Nf3 e5 2. Ng5 f5 3. c3 Nc6 4. g3 Nh6 5. f3 Nb4 6. cxb4 c6 7. Nxh7 Bb4 8. Nc3 f4 9. d3 d5 10. Bh3 fxg3 11. Qd2 Qh4 12. Kd1 Qe1 13. Kc2 - Sep 28 01:17 Solved: BLACK_WIN via MATE_PVview
1. Nf3 e5 2. Ng5 f5 … fxg3 11. Qd2 Qh4 12. Kd1 Qe1
1. Nf3 e5 2. Ng5 f5 3. c3 Nc6 4. g3 Nh6 5. f3 Nb4 6. cxb4 c6 7. Nxh7 Bb4 8. Nc3 f4 9. d3 d5 10. Bh3 fxg3 11. Qd2 Qh4 12. Kd1 Qe1