Hoppa

Hoppa is a 2005 game by Marino Carpignano, published at Il Fogliaccio degli Astratti # 27.

The game is played on a hexagonal board of edge size of four, initially empty. There are enough stackable bicolor pieces (one color per side).

A stack has a maximum size of three pieces. The topmost piece (the active piece) determines ownership.

The Rules:

• On her turn, the player can either:
• drop a friendly piece on an empty hex
• move a piece onto an adjacent piece or stack with two pieces
  
• An active piece can capture by jumping:
• in a stack of size three, it can perform a long jump (capturing the active pieces of the two next adjacent enemy stacks) or a short jump (capturing the adjacent active piece of an enemy stack)
• in a stack of size two, it can only perform a short jump, and the adjacent stack cannot have size three
• the active piece moves to the immediate next square (that must be empty) without changing color
• the captured active pieces are not removed but instead flip color
• no jumps are allowed over empty hexes or friendly stacks
  
• Wins the player that stalemates the adversary 

In the next diagram stack A can jump to B, C, F, and H. However, it cannot jump to D (no jumps over friendly stacks) nor E (no jumps over empty hexes). The stack north to A cannot capture it, since that stack has size two, and A has size three.

The rules include an extra scoring procedure for multiple matches:

• When the game ends, the number of active pieces (i.e., single pieces and pieces at the top of columns) is counted:
• If the winner has more active pieces than the loser, the final score is the actual count
• If the winner has fewer active pieces than the loser, the final score is 19 to 18 in favor of the winner.