23. If the player's ball strike, or be accidentally moved by, an opponent or an opponent's caddie or clubs, the opponent loses the hole. 24. If the player's ball strike, or be stopped by, himself or partner, or either of their caddies or clubs, or if, while in the act of playing, the player strike the ball twice, his side loses the hole. 25. If the player, when not making a stroke, or his partner or either of their caddies touch their side's ball, except at the tee, so as to move it, or by touching anything cause it to move, the penalty is one stroke. 26. A ball is considered to have been moved if it leave its original position in the least degree and stop in another; but if a player touch his ball and thereby cause it to oscillate, without causing it to leave its original position, it is not moved in the sense of Rule 25. 27. A player's side loses a stroke if he play the opponent's ball, unless (l) the opponent then play the player's ball, whereby the penalty is cancelled, and the hole must be played out with the balls thus exchanged; or (2) the mistake occur through wrong information given by the opponent, in which case the mistake, if discovered before the opponent has played, must be rectified by placing a ball as nearly as possible where the opponent's ball lay. If it be discovered before either side has struck off at the tee that one side has played out the previous hole with the ball of a party not engaged in the match, that side loses that hole. 28. If a ball be lost, the player's side loses the hole. A ball shall be held as lost if it be not found within five minutes after the search is begun. 29. A ball must be played wherever it lies, or the hole be given up, except as otherwise provided for in the rules. 30. The term "putting-green" shall mean the ground within 20 yards of the hole, excepting hazards. 31. All loose impediments may be removed from the putting-green, except the opponent's ball when at a greater distance from the player's than six inches. 32. In a match of three or more sides, a ball in any degree lying between the player and the hole must be lifted, or, if on the putting-green, holed out. 33. When the ball is on the putting-green, no mark shall be placed, nor line drawn as a guide. The line to the hole may be pointed out, but the person doing so may not touch the ground with the hand or club. The player may have his own or his partner's caddie to stand at the hole, but none of the players or their caddies may move so as to shield the ball from, or expose it to, the wind. The penalty for any breach of this rule is the loss of the hole.