5 steps

Step 1: Place six coins in two rows as shown. Your task is to rearrange the coins into a circle. Seems simple enough; but each coin you move must be touching exactly two other coins after you move it.

Step 2: Solution. First move. Note that the moved coin is touching two other coins after the move.

Step 3: Second move.

Step 4: Third move.

Step 5: Solved!

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