[Retros] This month we consider a pair of problems involving chess pieces (no pawns) and polyominoes.

[Mario Velucchi]

*This month we consider a pair of problems involving chess pieces (no pawns)
and polyominoes.
*
http://www.stetson.edu/~efriedma/mathmagic/

-- 
best .marioV

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Mario Velucchi
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