No. 0 - The only puzzle with round pieces! It is not a polyomino and not completely regular.
Each piece is a circle with a combination of protuberances at the corners of a hexagon.
This puzzle has each combination with one exception:
there should be one circular piece, but it has got one protuberance, so there are two equal pieces with one protuberance.
Confirming Tenyo there exist 1641 solutions for solving the puzzle.
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