65.2M
positions
11.6M
practically solved
233.96T
engine nodes
1.8M
analyses
8,947
in queue
13
active workers
88
active cores
14.8M
nodes / sec
26.6
positions / min
125
proof number
3,777
disproof number
Root conquest: 0/20 first moves solved · 17.8% of tree positions solved · last 24h: 249,429 closures, 3.42T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 81 over 193 open obligations, of which 30 (15.5%) 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 2.0h (median of 160) · measured at 2026-09-28 05:00 UTC
Closures by source, last 24h (249429 of 249429 labelled): USER 99.9% (249277) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.1% (152) · last 7d (1388707 of 1388707): USER 96.9% (1346078) · FILL 0.6% (8795) · AUTO 2.3% (32065) · SOLVE 0.0% (0) · NONE 0.1% (1769). 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. Nc3 h6 … d4 8. Ng7 Kd8 9. c4 g4 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nh3 e6 2. Nc3 h6 … d4 8. Ng7 Kd8 9. c4 Nf5 (User) · 128.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 f6 2. Nc3 a6 … f5 11. f4 Bc5 12. Bd2 Bxd4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. Nh3 e5 2. Ng5 f5 3. d4 e4 4. h3 d5 5. e3 Qe7 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. Nh3 d5 2. Nc3 h6 … b5 8. a4 Bxc3 9. Nxf4 Nf6 (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 | 1025 | 2 | |
| g1h3 | unsolved | 804 | 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 40.9% of the fleet | 1.40T | 10,273 |
| 2 | auranvesdranor 25.6% of the fleet | 875.49B | 6,301 |
| 3 | randomchampgamer 16.2% of the fleet | 555.52B | 4,387 |
| 4 | tenzink 15.1% of the fleet | 515.31B | 3,317 |
| 5 | bricerichmond 1.0% of the fleet | 34.06B | 32 |
| 6 | uipio 0.6% of the fleet | 21.25B | 166 |
| 7 | soothdest 0.5% of the fleet | 17.08B | 132 |
| 8 | rhaxier <0.1% of the fleet | 1.66B | 13 |
| 9 | MoNiKaMaDnEsS <0.1% of the fleet | 384.0M | 3 |
9 accounts · 3.42T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 38.6% of the fleet | 90.30T | 751,082 |
| 2 | tenzink 15.6% of the fleet | 36.55T | 306,220 |
| 3 | BManBJ 11.6% of the fleet | 27.20T | 187,335 |
| 4 | auranvesdranor 11.4% of the fleet | 26.61T | 191,480 |
| 5 | JackIV 4.3% of the fleet | 10.06T | 67,859 |
| 6 | randomchampgamer 4.0% of the fleet | 9.36T | 68,110 |
| 7 | RickEdinson 2.8% of the fleet | 6.50T | 43,070 |
| 8 | MoNiKaMaDnEsS 1.8% of the fleet | 4.14T | 26,565 |
| 9 | NeoArcturus 1.7% of the fleet | 4.09T | 16,756 |
| 10 | ijh 1.5% of the fleet | 3.57T | 37,348 |
and 24 more.
34 accounts · 234.15T 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 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e5 10. d6 Nd5 11. Be7 Kf7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e5 10. d6 Nd5 11. Be7 Kf7 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 9. Nxd6 e5 10. d6 Nd5 11. Be7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e5 10. d6 Nd5 11. Be7 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nc6 9. Nxd6 e5 10. d6 Nd5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e5 10. d6 Nd5 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e6 10. dxe6 Ba3 11. Qd8 Kf7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e6 10. dxe6 Ba3 11. Qd8 Kf7 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 9. Nxd6 e6 10. dxe6 Ba3 11. Qd8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e6 10. dxe6 Ba3 11. Qd8 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nc6 9. Nxd6 e6 10. dxe6 Ba3
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e6 10. dxe6 Ba3 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … e6 10. dxe6 Kf7 11. Be7 Kg8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e6 10. dxe6 Kf7 11. Be7 Kg8 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 9. Nxd6 e6 10. dxe6 Kf7 11. Be7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e6 10. dxe6 Kf7 11. Be7 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Nc6 9. Nxd6 e6 10. dxe6 Kf7
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 e6 10. dxe6 Kf7 - Sep 28 06:05 Solved: WHITE_WIN via MINIMAXview
1. Nf3 d6 2. Ng5 f5 … Qb5 8. Bxb5 Nc6 9. Nxd6 c5
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 c5 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … Kb7 17. Rb8 Ka7 18. Ra8 Kb6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 c5 10. e5 Bd7 11. e6 Ba4 12. d6 O-O-O 13. dxe7 Bxc2 14. Rd1 b5 15. Rd8 Kc7 16. Rc8 Kb7 17. Rb8 Ka7 18. Ra8 Kb6 - Sep 28 06:05 Solved: WHITE_WIN via MATE_PVview
1. Nf3 d6 2. Ng5 f5 … 16. Rc8 Kb7 17. Rb8 Ka7 18. Ra8
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4 h5 5. d4 a6 6. Bg5 Nf6 7. d5 Qb5 8. Bxb5 Nc6 9. Nxd6 c5 10. e5 Bd7 11. e6 Ba4 12. d6 O-O-O 13. dxe7 Bxc2 14. Rd1 b5 15. Rd8 Kc7 16. Rc8 Kb7 17. Rb8 Ka7 18. Ra8