Wąż

Wąż ("Snake" in Polish) is a 2-player connection game with moving tiles played on a 7x7 square grid.

The rules are simple and elegant: Each player has square tiles in their own color. In turns, they add a new tile to the board pushing it in from an edge and pushing the entire row as far as it will go until all the tiles in that row are collected in a contiguous line touching the opposite edge of the board. At the middle (4,4) square of the board is an immovable wall which also blocks pushing. The goal is to create a continuous connected set of tiles in your color which connects opposite sides (either north/south or east/west).