Thrall

Thrall is a 2005 game by L. Lynn Smith, published online.

The game is played on the following hexagonal tiling:

Each player has one piece, and there are enough wall pieces on reserve.

Rules:

• Initially, players drop their respective pieces on an empty hexagon
• On his turn, first the player slides his piece over a line of empty hexes, then places a wall piece on an empty triangle
• pieces cannot move between two occupied adjacent triangles
• Wins the player that stalemates the adversary
  

In the following position, White is winning because he enclosed the black piece is a smaller area, comparing with the area his piece is confined.

There is a ZRF to play Thrall.