AtomicDB

Sign in Register
77.7M
positions
14.8M
practically solved
280.03T
engine nodes
2.2M
analyses
721
in queue
14
active workers
66
active cores
16.9M
nodes / sec
36.4
positions / min
82
proof number
3,796
disproof number
Root conquest: 0/20 first moves solved · 19.1% of tree positions solved · last 24h: 379,848 closures, 3.89T nodes searched
Proof health & closures by source
Proof health · median disproof number on the AND frontier: 70 over 221 open obligations, of which 42 (19.0%) 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 17.7m (median of 145) · measured at 2026-10-07 22:00 UTC
Closures by source, last 24h (379768 of 379787 labelled): USER 100.0% (379585) · FILL 0.0% (110) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.0% (73) · last 7d (1954630 of 1954691): USER 99.7% (1949484) · FILL 0.0% (522) · AUTO 0.0% (25) · SOLVE 0.0% (0) · NONE 0.2% (4599). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.

Now analyzing

Up next

Play to explore drag a piece or click two squares

Keyboard move list

First moves from the starting position

movestateevalvisits
g1f3unsolved10602
g1h3unsolved7262
e2e3unsolved5053
e2e4unsolved4002
d2d4unsolved3062
b1c3unsolved1252
b1a3unsolved03
c2c3unsolved02
g2g3unsolved02
b2b4unsolved-733
h2h3unsolved-972
d2d3unsolved-982
a2a3unsolved-1002
f2f3unsolved-1173
b2b3unsolved-1441
f2f4unsolved-2603
h2h4unsolved-5002
a2a4unsolved-5142
g2g4unsolved-6042
c2c4unsolved-7003

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

ContributorNodesAnalyses
1BManBJ
39.4% of the fleet
1.53T10,807
2tenzink
17.1% of the fleet
663.99B4,638
3randomchampgamer
16.3% of the fleet
634.68B4,766
4RickEdinson
12.0% of the fleet
465.16B3,225
5Torom
9.2% of the fleet
359.71B2,031
6MoNiKaMaDnEsS
6.0% of the fleet
235.22B1,732

6 accounts · 3.89T nodes searched by the whole fleet.

All time

ContributorNodesAnalyses
1NitroColoraze
32.2% of the fleet
90.30T751,082
2tenzink
15.3% of the fleet
42.83T349,427
3BManBJ
14.8% of the fleet
41.42T290,318
4auranvesdranor
11.2% of the fleet
31.40T228,002
5randomchampgamer
5.6% of the fleet
15.56T114,253
6RickEdinson
3.7% of the fleet
10.35T69,078
7JackIV
3.6% of the fleet
10.06T67,859
8gannet
2.6% of the fleet
7.24T46,848
9MoNiKaMaDnEsS
2.1% of the fleet
6.01T40,335
10Torom
1.6% of the fleet
4.55T33,733

and 25 more.

35 accounts · 280.31T 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.

Showing the 6 most voted of 21 proposals · see every proposal

Milestones