Moon over Water
Moon over Water A rough painting with crayons and pencil crayons on lined A4 paper, of full moon in a clear sky over still water.
Moon over Water A rough painting with crayons and pencil crayons on lined A4 paper, of full moon in a clear sky over still water.
A problem about sorting a shuffled set of cards back into the original order
A question about arrangement of coloured chips on a Connect Four board
Four problems about splitting a natural number into smaller natural numbers.