jillybean, on 2013-July-19, 17:51, said:


Can I confirm, this 2♥ is the 'Kokish relay' which makes 2C our only forcing opening and 2N a 'gambling 2N' opening?
No, you cannot

I assume a 20-21 2N opening bid. The exact range is unimportant other than for adjusting the higher ranges to be differentiated after opening 2♣.
Thus a minimum 2♣ opening, on a balanced hand, is 22.
As with 1N and 2N openings, most players believe that it is best to play a narrow range. While 3 point ranges such as 15-17 for 1N are common, most 2N bids have a 2 point range, tho many fudge by 'half a point'.
Kokish as I learned it and play it separates opener's hands into 2 point ranges: 22-23, 24-25, 26-27, 28-29, 30+
We assume a 2♦ waiting response, positive or unspecified is irrelevant.
2♥ is either hearts or a koskish range.
If we go through 2♥ and then bid nt, we show the next range above what a direct notrump bid would have meant
2N 22-23
2♥ then 2N: 24-25
3N" 26-27
2♥ then 3N 28-29 and so on.
I made a mistake in my earlier post where I suggested we could have shown 25-26: that is true if a 2N showed 20-22, but not if it showed 20-21. In the former case, all of the ranges after 2♣ move up one point, since the weakest we would be would be 23.