Partnerships may choose their own method of "carding". The following is considered fairly standard (mainly Klinger 1994 ): • Leading a singleton against a suit contract is recommended only when defender has a trump stop • Other short suit (two or three cards) leads: • from a doubleton lead the higher card, thus from 93 lead the 9 • from a three card suit • if headed by an honour (not a sequence) lead the lowest, thus from Q92 lead the 2 • if all cards are low, there are three schools of thought: • TON "top of nothing" – lead the top card. It has the advantage of denying an honour, but is ambiguous with a lead from doubleton, • MUD "middle-up-down" – lead the middle card, and play the highest card next. • the lowest card (least popular) • if headed by a sequence (even two cards) lead the highest. From QJ2 lead the Q • long suit (four cards or more) leads: • from a sequence of honours lead the highest, thus from KQJx lead the K • from a suit containing an internal sequence lead the top of that sequence, thus from KJ109 lead the J • from a suit headed by an honour, defender generally leads the fourth best card, allowing partner to employ the
Rule of 11 • from an honourless suit, the highest or second-highest is normally led, especially against suit contracts; some partnerships lead fourth best against notrump though. • From hands containing both A and K • from AKx or AKxx etc. lead the A • from AK doubleton lead the K • Against a suit contract, many partnerships reserve a special meaning for the lead of a 10 .. it promises a touching card J or 9 and a non-touching higher honour e.g. K J10, K 109, Q 109. ==Difficulties==