63.2M
positions
11.1M
practically solved
227.62T
engine nodes
1.8M
analyses
7,963
in queue
12
active workers
72
active cores
0
nodes / sec
25.0
positions / min
125
proof number
3,794
disproof number
Root conquest: 0/20 first moves solved · 17.6% of tree positions solved · last 24h: 762,934 closures, 8.79T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 80 over 185 open obligations, of which 30 (16.2%) 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 7.2h (median of 234) · measured at 2026-09-26 17:00 UTC
Closures by source, last 24h (762901 of 762914 labelled): USER 95.8% (731040) · FILL 0.8% (6366) · AUTO 3.2% (24392) · SOLVE 0.0% (0) · NONE 0.1% (1103) · last 7d (1315506 of 1315506): USER 97.5% (1282995) · FILL 0.5% (6366) · AUTO 1.9% (24392) · SOLVE 0.0% (0) · NONE 0.1% (1753). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.
Now analyzing
- 1. d4 h6 2. Nc3 e6 … 7. Qb5 c6 8. Nd5 b6 9. Nc7 (User) · 128.0M nodes · auranvesdranor-admin-835912-atomicdb
- 1. Nf3 f6 2. Nc3 g6 … 10. O-O Rb8 11. e4 f5 12. e5 (User) · 128.0M nodes · auranvesdranor-pop-os-atomicdb
- 1. Nf3 f6 2. Nc3 g6 … Kf8 11. Bf7 Bb6 12. Qe2 Bc5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
- 1. d4 h6 2. Nc3 e6 … 8. Nd5 b6 9. Nc7 Kd8 10. e4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
- 1. d4 h6 2. Nc3 e6 … c6 8. Nd5 b6 9. Nc7 Kd8 (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 | 674 | 2 | |
| e2e3 | unsolved | 505 | 3 | |
| e2e4 | unsolved | 417 | 2 | |
| d2d4 | unsolved | 388 | 2 | |
| b1c3 | unsolved | 159 | 2 | |
| c2c3 | unsolved | 0 | 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 | -302 | 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 | NitroColoraze 83.7% of the fleet | 7.36T | 50,298 |
| 2 | BManBJ 5.6% of the fleet | 490.94B | 3,913 |
| 3 | tenzink 5.5% of the fleet | 481.70B | 3,231 |
| 4 | randomchampgamer 1.8% of the fleet | 156.92B | 1,272 |
| 5 | RickEdinson 1.6% of the fleet | 136.31B | 1,096 |
| 6 | auranvesdranor 0.9% of the fleet | 80.15B | 640 |
| 7 | MoNiKaMaDnEsS 0.9% of the fleet | 79.82B | 625 |
| 8 | Torom <0.1% of the fleet | 3.44B | 8 |
8 accounts · 8.79T nodes searched by the whole fleet.
All time
| Place | Contributor | Nodes | Analyses |
|---|---|---|---|
| 1 | NitroColoraze 39.1% of the fleet | 88.96T | 742,749 |
| 2 | tenzink 15.7% of the fleet | 35.73T | 301,212 |
| 3 | BManBJ 11.1% of the fleet | 25.40T | 174,530 |
| 4 | auranvesdranor 11.1% of the fleet | 25.22T | 182,174 |
| 5 | JackIV 4.4% of the fleet | 10.06T | 67,859 |
| 6 | randomchampgamer 3.7% of the fleet | 8.53T | 61,885 |
| 7 | RickEdinson 2.9% of the fleet | 6.50T | 43,070 |
| 8 | NeoArcturus 1.8% of the fleet | 4.09T | 16,756 |
| 9 | MoNiKaMaDnEsS 1.8% of the fleet | 4.04T | 25,892 |
| 10 | ijh 1.6% of the fleet | 3.57T | 37,348 |
and 22 more.
32 accounts · 227.78T 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 26 18:02 Solved: BLACK_WIN via MINIMAXview
1. Nf3 f6 2. e4 c6 … 4. d4 Nh6 5. Nd5 cxd5 6. Rg1
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 - Sep 26 18:02 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 7. b4 Ng4 8. Kd2 Qa4 9. e5
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Qa5 7. b4 Ng4 8. Kd2 Qa4 9. e5 - Sep 26 18:02 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Qa5 7. b4 Ng4 8. Kd2 Qa4
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Qa5 7. b4 Ng4 8. Kd2 Qa4 - Sep 26 18:02 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 6. Rg1 Qa5 7. b4 Ng4 8. Kd2
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Qa5 7. b4 Ng4 8. Kd2 - Sep 26 18:02 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … cxd5 6. Rg1 Qa5 7. b4 Ng4
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Qa5 7. b4 Ng4 - Sep 26 18:02 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 5. Nd5 cxd5 6. Rg1 Qa5 7. b4
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Qa5 7. b4 - Sep 26 18:02 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Nh6 5. Nd5 cxd5 6. Rg1 Qa5
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Qa5 - Sep 26 18:01 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 6. Rg1 Ng4 7. Kd2 Ne3 8. Qe2
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Ng4 7. Kd2 Ne3 8. Qe2 - Sep 26 18:01 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … cxd5 6. Rg1 Ng4 7. Kd2 Ne3
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Ng4 7. Kd2 Ne3 - Sep 26 18:01 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … 5. Nd5 cxd5 6. Rg1 Ng4 7. Kd2
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Ng4 7. Kd2 - Sep 26 18:01 Solved: BLACK_WIN via MATE_PVview
1. Nf3 f6 2. e4 c6 … Nh6 5. Nd5 cxd5 6. Rg1 Ng4
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Rg1 Ng4 - Sep 26 18:01 Solved: BLACK_WIN via MINIMAXview
1. Nf3 f6 2. e4 c6 … 4. d4 Nh6 5. Nd5 cxd5 6. Ba6
1. Nf3 f6 2. e4 c6 3. Nc3 d6 4. d4 Nh6 5. Nd5 cxd5 6. Ba6