[virgosrock]

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Deep in the brains of the software is some addled preconceived notion to support the former suit with a doubleton when holding support for the later suit to show a constructive hand. Seen many times.

vrock

[Stephen Tu]

Sorry vrock, but on this particular occasion you are the one who is crazy not GIB. Bidding 2C is completely absurd, 1nt is normal if you are going to open this hand.

The problem is that 1d followed by 2c is very wide ranging in strength, you can have up to 18. Also you are supposed to have 5 diamonds on this auction normally (the people who advocate 1d followed by 2c on some difficult 3145 type hands are in the minority these days in my estimation).

It's unclear to pass 2c because:
- might miss game if you are strong
- diamonds might play better (you might be 6-4, plus in general 5-2 fits tend to play a bit better than 4-3 fits)

[jdonn]

2D is a normal bid. 2C was not.

[virgosrock]

jdonn, on 2018-May-07, 11:53, said:

2D is a normal bid. 2C was not.

agree. i take this post back. Stephen Tu's explanation about wide range of 2c made sense.

vrock