♥ A Q 9 5 3
♦ K Q 6 3
♣ Q 9
| WEST | NORTH | EAST | SOUTH |
| pass | 1♠ | ||
| pass | 2♥ | pass | 3♥ |
| pass | 4♥ | pass | pass |
| pass |
South opens 1♠ and North, with 14 points, responds 2♥.
Note that North is not permitted to make this bid without a 5-card or longer ♥ suit.
South, knowing that North has 5, bids 3♥ to confirm the trump suit.
North has a minimum strength hand with no slam aspirations, so he uses Fast Arrival and bids 4♥. South is also satisfied to just play at game.
2/1 is a good bidding method, and here, 4♥ is a good contract. But you can see that it is not a laydown - there is no bidding system that will always reach 100% contracts. In this hand a 3-3 ♦ split will provide the 10th trick, or if that fails, taking 2 ♠ finesses provides a 75% chance of success.
Deal 7
♥ K 10 7
♦ A 9 5
♣ 7 2