Copyright (c) ? Gérard Rousseau, Pion Rouge 

Gobs is played on a 9x9 square board with the following setup:

  • TURNS - At each turn, each player must do one of the following things:
    • Slide a stone thru one or more empty cells in any orthogonal or diagonal direction (like the chess Queen)
    • Jump over an enemy stone in move range, landing on the immediate empty cell. The jumped stone changes color and becomes friendly.
      • Jumps are multiple and are not mandatory.
    • Capture a stone in move range by replacement. 
      • Adjacent stones cannot be captured.
  • GOAL - A player wins by reducing the opponent to 4 stones.
    • If a player just has 5 stones, he must reduce the opponent army on that turn. If he reduces to 5 stones, the game is a draw; if he reduces to less than 5 stones he wins; otherwise he loses.
A capture/jumping example

The black stone can capture by replacement the stone at a9.

It can also jump over 3 white stones (landing from [1] to [3] and changing them to 3 black stones.

However, it cannot capture the marked white stone because they are both adjacent.

Some more information here.