Exchange the two groups of coins.
Exchange the two diagonals of the square array employing the minimum single-coin sliding moves.
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Move the minimum number of coins to get rid off ALL the right coin angles.
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Convert the necklace into two triangles (“diamonds”), different in size. Three sliding moves are required.
Flip the “Olympic Coins” shape as shown in the Goal, performing just six special single-coin moves.
Reach the square frame in the Goal position. A move consists of sliding a coin to a new position where it has to touch at least two other coins. Happy 4th of July!
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“Unfold” the coin delta in a series of single-coin moves…
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By moving one coin at a time, reach the Goal position so that after each move…
Eight coins are arranged into 4 rows of three coins each. Move just two coins to get…
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Change a stylized “Olympic” pattern into the one shown in the Goal. Single-coin sliding moves to do that.
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Convert the “G” letter into the “O” letter. A move consists of sliding a coin to a new position where it has to touch at least two other coins.
Nine coins placed in a 3×3 array, produce 8 rows of three coins each – three horizontal rows, three vertical rows and two main diagonals. Move the minimum possible number to…
Fifteen equilateral triangles can be spotted in this arrangement. What is the minimum number of coins to be removed in order to get rid of all the equilateral triangles in it?
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Convert the “W” letter into the “F” letter. A move consists of sliding a coin to a new position where it has to touch at least two other coins.
Convert the “H” letter into the “O” letter – a 3×3 coin square without the central coin. A move consists of sliding a coin to a new position where it has to touch at least two other coins.
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Turn the two rows of coins into the coin circle in just three moves. A move consists of sliding a coin to a new position where it has to touch at least two other coins.
Move just two coins to turn a coin cup upside-down. The restriction is that after each move a moved coin should touch two other ones.
