Copyright (c) 2000 Guy Jeandel

This game is played on an empty 8x8 square board. Each player has 9 Othello-like stones off board.

DROP PHASE - On this first phase, on each turn each player drops a stone on an empty cell..
MOVE PHASE - When all the pieces are on the board (and the goal was not achieved yet) each player moves one of his pieces to an adjacent orthogonal empty cell.
CAPTURE - When two friendly stones have, in-between (orthogonally or diagonally), a line of enemy stones, the moving player swaps the color of one of them (unlike Othello where the player would swap all enemy stones).
GOAL - Wins the player that makes a (orthogonal or diagonal) 5 in-a-row.
An example

Black's turn n the moving phase. If the marked black stone moves to the green dot, Black must swap one (and just one) the marked white stones.