♥ K Q J 10 5
♦ 7 4
♣ A Q 6
| WEST | NORTH | EAST | SOUTH |
| 1♥ | pass | 2♦ | |
| pass | 2NT | pass | 3NT |
| pass | pass | pass |
After North's 1♥ opening South counts 12 HCP plus one length point for the fifth ♦. That is enough for a 2/1 response so South says 2♦.
The partnership is now forced to reach game so North bids 2NT.
This describes a balanced hand with exactly 5 ♥s and no 4-card ♠ suit.
South is happy to play in Notrump, and with no extra strength above the 13 points already promised, uses Quick Arrival and bids 3NT. North passes and a reasonable game contract is reached.
Notice that you would bid this hand the same way whether or not you play 2/1.
Deal 2
♥ A 2
♦ K 10 9 6 3
♣ K J 4