The board / graph theory / #1155
Erdős Problem #1155
OPENdatabase updated 2026-01-23
No proof or disproof is known, and it isn't known whether a finite computation could settle it.
What the community database records, not our verdict. erdosproblems.com no longer shows statuses (why).
Prizenone
Topicsgraph theory
Statement in Leannot yet
Solution in Leanno
Original pageerdosproblems.com/1155
Attempts
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Live page status OPEN (0 claimed proofs), but “Currently working on this problem” lists Sam_Petkov; stopped to avoid colliding with a current worker.
SKIPPED