Diamond mine

Description: Ïåðåñòàâëÿéòå 2 ñîñåäíèõ äðàãîöåííûõ êàìíÿ, ÷òîáû ïîëó÷èòü 3 ïîäðÿä èäåíòè÷íûõ (êàê "êðåñòèêè-íîëèêè") Òîëüêî êðîìå äèàãîíàëåé.
Instructions: