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You'll probably want to use one of the smaller LAB picks, although the small Peterson hook will sometimes do with care and practice. Sawtooth rakes, such as the Peterson "Ripple" and the Falle-Safe rakes, have 5 or more very acute peaks along the length of the pick's edge. If you inadvertently push a pin up too far or are applying so much torque that more than one pin is binding, you may have an overset pin instead. If you're having trouble, you may be pushing adjacent pins up past the shear line as you pick a pin, causing them to be overset even before they start to bind. Note that excessive raking with any of these techniques will tend to overset pins, so be prepared to release torque and start over from time to time. While pin-at-a-time picking is usually the most reliable way to open a given lock (and the skills used essential for mastery of other techniques), what is billiards raking can sometimes open a lock more quickly. The lock mechanism can open when the notches on the disks are lined up at a particular rotation. These locks are unusual in not requiring springs on the individual tumblers and are therefore especially well suited to outdoor use under extreme conditions.

You may well have one of these locks on your house. If you can pick all (or at least most) of the locks on this board, you are well prepared against the typical locks installed in residential and commercial buildings in the US. Finally, for a real challenge, try the Yale "Y1" keyway locks. The Y1 keyway is one of the toughest you are likely to encounter in real lock installations in the US. Electronic locks, of course, do not have mechanical tumblers and are so not vulnerable to many of the physical manipulations exploited in tradtional lock picking. When you've mastered the SX locks, try the "Schlage SC" keyway locks. India, they are commonly used for door locks and padlocks as well. No players are penalized when balls are disturbed by the referee. After a predetermined number of points have been scored, the players in the game of balkline must drive at least one object ball past a balkline parallel to each rail. A common billiards game called "speed pool" requires players to pocket the balls as quickly as possible. Many countries-among them France, England, China, Italy, and Spain-have been credited with the invention of the game, but, in fact, nothing is really known about the origin of billiards.

Players who want to win the game of billiards must think both offensively and in terms of earning points, as well as defensively and in terms of making things as tough as possible for their opponent. To Play Pool, players win points by shooting balls into the table’s pockets. Each player attempts to outscore their opponent and reach the previously agreed-upon total required to win the match using a different colored cue ball. Like restrictions on consecutive cannons, a player can make only 15 consecutive hazards. Any ball on the table can be pocketed, and each ball pocketed successfully earns the player one point. However, you can easily differentiate them by looking at the table and the ball’s numbers. However, the design of the cylinder requires the use of special tools to manipulate the pins and apply torque. So far, we've been picking locks "a pin at a time," with a single pin stack set at the shear line in the sequence dictated by whatever misalignments are present in the cylinder. Raking, in contrast, is a class of picking techniques in which several pin stack may be set at the shear line simultaneously.

When the pin stack truly sets at the shear line, it will feel like an ordinary set pin. In a lock with six pin stacks with a uniform chance of a pin setting at either shear line, the probability of a picked lock actually opening is only 1/64. Picking techniques for these locks involve the use of special torque tools designed to put torque on only one of the two concentric plugs. Very "wavy" rake picks can simulate various key profiles, and can be surprisingly successful at opening poorly-made locks. Better quality locks are less forgiving of too much torque. If only serrated top pins are used, reverse picking may be successful. A correctly keyed wafer is flush with the plug on the top and the bottom and allows rotation. To neutralize a partially set spool or mushroom pin, reduce torque and push the pin up, allowing the plug to rotate backward a bit as you do. An alternative technique, which I have not seen mentioned in the literature, is to first determine which pin stacks have security pins and which have regular pins (by picking normally and noting which stacks are false set). Do not push up hard against the pins; use just enough pressure to cause the pin stacks to jump.