♥ A Q J 7 5 3
♦ 9 5
♣ A 2
| WEST | NORTH | EAST | SOUTH |
| 1♥ | pass | 1NT | |
| pass | 2♥ | pass | pass |
| pass |
North opens 1♥.
South responds 1NT, just as in standard bidding. The difference is that in this case the 1NT response is forcing on North.
North has an easy second bid, he rebids his 6-card suit.
South has nothing to say over 2♥ except pass.
Notice that this is the same bidding and same final contract that would have been reached with standard bidding. Using 2/1 is often like that.
Deal 18
♥ 10 6
♦ K 10 3 2
♣ J 10 5 4