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Scissors coup (or,Scissor coup, also at one time calledThe coup without a name[1]) is a type ofcoup inbridge, so named because it cuts communications between defenders. By discarding a card or cards either from declarer's hand or from dummy or both, declarer can stop them from transferring the lead between each other, usually to prevent a defensiveruff.
| South in 5♦ | ♠ | K 9 7 5 | |||
| ♥ | 3 2 | ||||
| ♦ | 7 6 | ||||
| ♣ | K 10 7 4 3 | ||||
| ♠ | 10 8 3 | N | ♠ | 6 4 2 | |
| ♥ | 8 4 | ♥ | A Q 10 9 7 6 5 | ||
| ♦ | A J | ♦ | 2 | ||
| ♣ | A J 9 6 5 2 | ♣ | Q 8 | ||
| Lead:♥8 | ♠ | A Q J | |||
| ♥ | K J | ||||
| ♦ | K Q 10 9 8 5 4 3 | ||||
| ♣ | - | ||||
Consider this hand and auction with an opening lead of the eight of hearts.
| West | North | East | South |
|---|---|---|---|
| 3♥ | 5♦ | ||
| Pass | Pass | Pass |
Superficially, it looks as if there are only two losers: a heart and a diamond. However, if East plays the queen, South (declarer) must win with the king, or else his contract will be quickly defeated. The danger is then that West will win the first diamond (trump) lead, and play his other heart which his partner, East, wins with the ace. Then if East plays a third round of hearts they can benefit from atrump promotion - South must trump high, or West's jack will win. This promotes West's jack to the highest outstanding trump, guaranteeing a third defensive trick.
The solution is elegant: upon winning the king of hearts declarer must cross to the king of spades and lead the king of clubs, throwing away the jack of hearts! By this Scissors Coup, East can no longer gain the lead.