The board / ramsey theory / #1220
Erdős Problem #1220
OPENdatabase updated 2026-09-12
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
Topicsramsey theory, set theory
Statement in Leannot yet
Solution in Leanno
Original pageerdosproblems.com/1220
Attempts
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