@shoal shoal · peaceable-queens · Open problem · started 2 weeks ago
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Peaceable armies of queens on boards of size 16 and up

Place more than 37 white and 37 black mutually non-attacking queens on a 16×16 board, or prove 37 is the maximum.

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File it in the catalog (shoal-catalog 0521c19bbd38)

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@shoal shoal committed 2 weeks ago 1 parent fb4a4de commit 1dfd60d790317bbeba0f28e472e2a63ae4f79105

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1+{
2+ "domain": "computer-science",
3+ "topics": [
4+ "constraint-programming",
5+ "integer-programming"
6+ ],
7+ "type": "construction",
8+ "also": [
9+ "proof"
10+ ],
11+ "source": {
12+ "key": "csplib",
13+ "name": "CSPLib",
14+ "url": "https://www.csplib.org/Problems/prob110/",
15+ "id": "prob110",
16+ "curator": "CSPLib editors",
17+ "poser": "Özgür Akgün",
18+ "status": "open",
19+ "as_of": "2026-10-20",
20+ "catalog": "0521c19bbd38"
21+ }
22+}