Bidding Conventions >
CRASH
CRASH (aka "CRO") is an overcall structure against an artificial
1
opening. The acronym stands for "
Color,
Rank and
Shape", in reference to the types of two-suiters shown.
Multiple variations of CRASH exist. After an enemy
1 opening bid:
Variation #1
This is the original convention as created by American experts Kit Woolsey and Steve Robinson.
| Double |
Strength-showing |
1 |
Two suits of the same Color, i.e. + or + |
| 1 |
Two suits of the same Rank, i.e. + (the minors) or + (the majors) |
| 1 |
Natural, may be light |
| 1NT |
Two suits of the same Shape, i.e. + (the rounded suits) or + (the pointed suits) |
Variation #2
| Double |
Two suits of the same Color |
| 1 |
Two suits of the same Rank |
| 1 |
Natural, may be light |
| 1 |
Natural, may be light |
| 1NT |
Two suits of the same Shape |
Variation #3
| Double |
Showing hearts |
| 1 |
Natural, may be light |
| 1 |
Two suits of the same Color |
| 1 |
Two suits of the same Rank |
| 1NT |
Two suits of the same Shape |
Variation #4
| Double |
Showing hearts |
| 1 |
Showing spades |
| 1 |
Two suits of the same Color |
| 1 |
Two suits of the same Rank |
| 1NT |
Two suits of the same Shape |
CRASH over 1NT
CRASH can also be used over a 1NT opening bid:
| Double |
For penalty by an unpassed hand. By a passed hand, shows two suits of the same Shape |
| 2 |
Two suits of the same Color |
| 2 |
Two suits of the same Rank |
| 1 |
Natural |
| 1 |
Natural |
| 2NT |
By an unpassed hand, shows two suits of the same Shape |
Other Considerations
CRASH vs. 1
is permitted by the ACBL General Convention Chart (GCC), but not allowed against 1NT.
