Latin square
A Latin square is arranged so that no row or column contains two of the same colors.
Explanation
A 6×6 square with six colors.
There are 812 851 200 Latin squares of 6×6. Some funny variations are shown below.
blue red green black yellow cyan
HistoryThe name 'Latin square' comes from Leonhard Euler (1707 - 1783) who used Latin symbols in his squares. |