Problem 1
Matchpoints, Both Vul, Dealer: South
West North East South
4
4 All Pass
Lead 10 (standard leads). South drops the king under the ace. Plan the play.
Solution
After taking the A, ruff a club in the hand to drop potential queen in South's hand. Draw trumps, then play A and overtake the queen with the king in the dummy. Play the 10, discarding a heart from the hand. When North plays Q, discard another heart from the hand. Making five.