Materials: black/white stones and board. Play on a hexagonal or square board which is initially empty.
Players take turns placing stones of their color in the hexagonal cells, using the "Bide" placement protocol:
At the beginning of your turn, you are given a new stone. You can either play it, or "bide" (meaning wait). If you bide, set the stone aside and your turn ends immediately. The stone remains in your hand. If you play the new stone, you may "release" (
meaning play every stone in your hand in succession). If a player releases, the opponent must immediately release next turn.

When a stone is placed, it creates a "shock wave": all adjacent stones move one space in the direction radially outward from the placement. If there are multiple connected stones directly in the line of the shock wave, they all move one space. If this
movement causes a stone to bump into another stone directly in the line of the shock wave, that stone also gets pushed one space (becoming adjacent along a different grid line does not count). However, stones cannot be pushed past the edges of the board,
and lines that are full between the edges and placed stone do not move.

The game is over when no more moves can be made. Players begin scoring the position. Each stone is worth points equal to their distance from the nearest edge. Adjacent stones are connected. Groups consist of connected stones of a single color. The player
with the highest scoring group wins. Use pie rule for serious play (bide is OK to swap).

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