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Line 1: The '''hexagonal tortoise problem''' ({{lang-ko\|지수귀문도}}, {{lang-zh\|地數龜文圖}}, a.k.a. '''jisuguimundo''') was invented by Korean aristocrat and mathematician Seok-jeong Choi, who lived from 1646 to 1715. It is a mathematical problem that involves a hexagonal lattice, like the hexagonal pattern on some tortoises' shells, to the (''N'') [[vertex\|vertices]] of which must be assigned integers (from 1 to ''N'') in such a way that the sum of all integers at the vertices of each hexagon is the same.{{sfn\|Choe\|Choi\|Moon\|2003\|pp=850}} The problem is similar to a [[magic square]].{{sfn\|Choe\|Choi\|Moon\|2003\|pp=850}} == References == === What supports what ===

Hexagonal tortoise problem: Difference between revisions