AtomicDB, the Atomic Chess conquest map

73.6M

positions

13.7M

practically solved

263.47T

engine nodes

2.0M

analyses

5,097

in queue

active workers

active cores

4.6M

nodes / sec

17.3

positions / min

proof number

3,797

disproof number

Root conquest: 0/20 first moves solved · 18.6% of tree positions solved · last 24h: 222,115 closures, 3.61T nodes searched

Proof health & closures by source

Proof health · median disproof number on the AND frontier: 69 over 208 open obligations, of which 39 (18.8%) 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 35s (median of 24) · measured at 2026-10-03 11:00 UTC

Closures by source, last 24h (222114 of 222114 labelled): USER 99.5% (221098) · FILL 0.0% (0) · AUTO 0.0% (0) · SOLVE 0.0% (0) · NONE 0.5% (1016) · last 7d (2419377 of 2419377): USER 98.6% (2386084) · FILL 0.3% (7655) · AUTO 0.9% (21287) · SOLVE 0.0% (0) · NONE 0.2% (4351). Labelling started at deploy: closures older than that carry no source and are counted in none of the shares above.

Now analyzing

deep line, ply ≥50 · … a6 a5 Kb8 b5 (User) · 128.0M nodes · BManBJ-Blake-atomicdb
deep line, ply ≥51 · … a6 g5 Bf5 h4 (User) · 128.0M nodes · BManBJ-Blake-atomicdb#1
deep line, ply ≥51 · … a6 g5 Nh8 Bxd6 (User) · 128.0M nodes · BManBJ-Laptop-Blake-atomicdb
1. Nf3 d6 2. Ng5 f5 … 11. h3 Kf7 12. Bb5 a5 13. Bd7 (User) · 128.0M nodes · randomchampgamer-2026PC-atomicdb
1. Nh3 f6 2. e4 e5 … Kf7 16. Rc1 Ne7 17. Nf8 Ba4 (User) · 512.0M nodes · RickEdinson-MSI-atomicdb

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Keyboard move list

First moves from the starting position

move	state	eval	visits
g1f3	unsolved	1101	2
g1h3	unsolved	818	2
e2e3	unsolved	505	3
d2d4	unsolved	440	2
e2e4	unsolved	418	2
b1c3	unsolved	114	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	-260	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 38.1% of the fleet	1.37T	10,237
2	tenzink 18.9% of the fleet	683.66B	4,998
3	randomchampgamer 18.6% of the fleet	669.82B	5,208
4	RickEdinson 13.0% of the fleet	468.26B	3,423
5	auranvesdranor 10.0% of the fleet	360.13B	2,744
6	MoNiKaMaDnEsS 1.1% of the fleet	41.03B	322
7	quasa 0.2% of the fleet	7.94B	62
8	soothdest 0.2% of the fleet	5.48B	51

8 accounts · 3.61T nodes searched by the whole fleet.

All time

Place	Contributor	Nodes	Analyses
1	NitroColoraze 34.3% of the fleet	90.30T	751,082
2	tenzink 15.1% of the fleet	39.79T	329,165
3	BManBJ 13.2% of the fleet	34.78T	245,227
4	auranvesdranor 11.9% of the fleet	31.40T	228,002
5	randomchampgamer 4.8% of the fleet	12.61T	93,962
6	JackIV 3.8% of the fleet	10.06T	67,859
7	RickEdinson 3.1% of the fleet	8.23T	55,426
8	gannet 2.7% of the fleet	7.24T	46,848
9	MoNiKaMaDnEsS 2.0% of the fleet	5.21T	34,838
10	NeoArcturus 1.6% of the fleet	4.09T	16,758

and 25 more.

35 accounts · 263.61T 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 e5
1. Nf3 e5 2. e4
proposed by quasa · 16 votes
Pls nh4 is more solvable than c3
1. Nf3 f6 2. e4 e6 3. Nc3 c6 4. Nb5 cxb5 5. Bb5 Nc6 6. d4 g6 7. Nh4
proposed by 67king · 6 votes
Is Nh3 h6 e3 e6 Nc3 a draw?
1. Nh3 e6 2. e3 h6 3. Nc3
proposed by soothdest · 4 votes
Refuting 1... d6
1. Nf3 d6 2. Nc3
proposed by randomchampgamer · 3 votes
The weaker of the two f-pawn advances for 1. ...d6
1. Nf3 d6 2. Ng5 f5 3. Nf7 Qd7 4. e4
proposed by MoNiKaMaDnEsS · 3 votes
Let's solve Qc8 in 2N Nh6 mainline and/or use it as a benchmark
1. 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. Bh6
proposed by soothdest · 3 votes

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

Milestones

Oct 03 12:05 Solved: BLACK_WIN via MINIMAX
1. Nf3 d6 2. Ng5 f6 … 9. Rg1 Qf4 10. Bg2 Ke8 11. Rf1
1. Nf3 d6 2. Ng5 f6 3. f3 Bg4 4. Nxh7 c6 5. Nc3 Qa5 6. e4 Be6 7. g4 Kd7 8. Rb1 Qf5 9. Rg1 Qf4 10. Bg2 Ke8 11. Rf1
view
Oct 03 12:04 LANE_CAP_HIT
Oct 03 12:04 LANE_CAP_HIT
Oct 03 12:04 Solved: BLACK_WIN via MINIMAX
1. Nh3 f6 2. e4 d6 … 5. Nxh7 Kd8 6. Nb1 Qa6 7. g3
1. Nh3 f6 2. e4 d6 3. Nc3 c6 4. Ng5 Qa5 5. Nxh7 Kd8 6. Nb1 Qa6 7. g3
view
Oct 03 12:03 Solved: BLACK_WIN via MINIMAX
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qh5
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qh5
view
Oct 03 12:03 Solved: WHITE_WIN via MATE_PV
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qh5 Kd7 5. Qe8 Ke6
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qh5 Kd7 5. Qe8 Ke6
view
Oct 03 12:03 Solved: WHITE_WIN via MATE_PV
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qh5 Kd7 5. Qe8
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qh5 Kd7 5. Qe8
view
Oct 03 12:03 Solved: WHITE_WIN via MATE_PV
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qh5 Kd7
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qh5 Kd7
view
Oct 03 12:03 Solved: BLACK_WIN via MINIMAX
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qg4
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qg4
view
Oct 03 12:03 Solved: BLACK_WIN via MINIMAX
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qf3
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qf3
view
Oct 03 12:03 LANE_CAP_HIT
Oct 03 12:03 Solved: BLACK_WIN via MATE_PV
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qf3 Qd4 5. Qxb7
1. Nf3 f6 2. e4 d5 3. Nc3 dxe4 4. Qf3 Qd4 5. Qxb7
view