[Hilver]

Playing a Big Club (Precisionstyle) what defnce do you play against Modified CRASH as defined:
Double: Promises a Heart suit with good to semi-solid values.
1♦: Promises a Spade suit with good to semi-solid values.
1♥: Promises a two-suited holding of the same color: either Spades and Clubs or Hearts and Diamonds. The two suits are unspecified but must contain at least a 4-4 distribution with values located in the suits.
1♠: Promises a two-suited holding of the same rank: either both Major suits or both Minor suits. The two suits are unspecified but must contain at least a 4-4 distribution with values located in the suits.
1NT: Promises a two-suited holding of the same shape: either Rounded, Hearts and Clubs, or Pointed, Spades and Diamonds. The two suits are unspecified but must contain at least a 4-4 distribution with values located in the suits.

My pard and I just play all our bids natural. Do you advice another approach?

Jan

[shevek]

I think it's wrong to waste time on developing a specific counter. The ideal is never to look at an opponent's system card. When some bid of theirs is alerted and explained, both of you should know what all your bids mean.
In other words, you should aim for a generic defence against all methods, some of which are yet to be invented. While, it's true that this meta-defence might be less than ideal in some cases and run to a couple of pages, you will save time and anxiety once you get it down pat.

Here are two starting principles
1) We don't want to play in their 5+ suit.
2) We make natural bids in their artificially shown 4+ suit

For instance, against Flannery 2♦ (4♠s & 5♥s), 2♠ from us would be natural but 2♥ wouldn't.

After our strong 1♣, we play system on if they double or bid 1♦. We would give up playing hearts if X shows 5+.

Against 1♥/1♠ = 4-4 in greens or yellows, double = tko of the suit they bid, which they will hold half the time. All others are natural so no assumptions.

Our method would change if 1♥ showed 5-5. They wouldn't be so restrictive but say someone opens or overcalls 2♥ = 5-5 in majors or minors. Now double for tko of spades makes less sense since - if opener has majors - you don't want to play hearts. We play double = 4-4 (4-3) in the bid suit and it's complement so majors in this case. You say "I think he has minors cos I have majors". In this style, pass then double of a minor can be penalty.

3) If they don't have the suit/strain they bid, double = "the tougher takeout".

For instance, say their 2NT opening = ♥ & ♣ or ♠ & ♦. If you have say 4-1-5-3, you can pass this and double 3♥ for takeout, though risky. If you have 1-4-3-5, it's even less appealing to pass then double 3♠. It's the tougher takeout.
Therefore, the heart hand should act directly so double of 2NT = ♥ & ♣.

Against a multi 2♦, double = tko of spades. OKay we also play 2♥ = tko of hearts. Note we'd do exactly the same vs 2♠ opening (or response to 1NT) as six cards in either minoor.


Prattled on a bit ....

[dake50]

Agree a generic defense. Against any their bid, WE know what our bid says.
I like xfers here. Solves 'what is forcing?' so allows two messages if first suit/stop shown doesn't put partner in the catbird seat. Esp consider eg. xfer to their Spades then NT with good/double Spade stop, weak in other suit. xfer to our suit then cue their Spades=stop asks do you stop other? Xfer then jump new =advance cue with SS jump suit. X=stop/control their dearer/est suit.

[shubi]

Defense against any SMOKE screen? DONT jump in in 2nd or 3rd position unless you have a NATURAL bid or opps might pass out the bid to play. in short opps will have to tell each other what their bid mean. Go from there.