Go (game)
Two players, "Black" and "White", take turns placing a "stone" (game piece) of their own color on a vacant "point" (intersection) of the grid on a Go board. Black plays first. If there is a large difference in skill between the players, the weaker player typically uses Black and is allowed to place two or more stones on the board to compensate for the difference (see Go handicaps). The official grid comprises 19×19 lines, though the rules can be applied to any grid size. 13×13 and 9×9 boards are popular choices to teach beginners, or for playing quick games. Once placed, a stone may not be moved to a different point.
Go equipment
When placing the stone, take care that long sleeves are brushed up to avoid knocking stones already played. To place the stone on the board, as soon as the fingertip of index finger is about to reach the surface of the board, it slips to the side, allowing the middle finger to aim the stone down towards the surface and connect (the other fingers and thumb naturally spread outwards). With a little practice a stone can be placed gracefully and forcefully and with a big click. The keys to a loud click are the force of the middle finger and the late release of the stone. Once the stone has been placed, the middle finger and hand slowly lifts off the stone (trying to avoid wobbling the stone) and gently retreats back to the player.