Last night I saw some hands that got me thinking. Usually for a 4-level pre-emptive opening I would want an 8-card suit, and a hand that for some reason I preferred to open at the 4-level rather than the 1-level.
Soon after I began playing I noticed that some players open at the 4-level with a 7-card suit. I don't know anything though about whether many good players do this or what criteria they use. I would guess a high concentration of values in the suit and good shape (not 7222), but I have never seen this anywhere.
I am reasonably confident that opening 6-card suits at the 4-level isn't winning tactics. But last night people kept doing it!
What should a 4-level opening look like? Thoughts appreciated
If someone wants to discuss Namyats I don't mind but this is really a hand evaluation question more than a systems question.
Here are some of the hands from last night:
Deal 1 North
North deals S AKQ1096
None vul H 7
D 86
C AJ98
West East
S J852 S 4
H J10 H AKQ832
D K53 D A1042
C K543 C Q10
South
S 73
H 9654
D QJ97
C 762
West North East South
4S
Deal 4 North
West deals S J854
Both vul H 3
D A10532
C Q84
West East
S 1092 S AK63
H J9654 H 2
D Q64 D J987
C A9 C 10762
South
S Q7
H AKQ1087
D K
C KJ53
West North East South
Pass Pass Pass 4H
Pass Pass Pass
Contract: 4H
Deal 6 North
East deals S 9
EW vul H AJ83
D 62
C Q87643
West East
S K42 S 103
H KQ1095 H 42
D K1083 D QJ954
C 2 C AK109
South
S AQJ8765
H 76
D A7
C J5
West North East South
Pass 4S
Pass Pass Pass
Contract: 4S