[Wackojack]

Scoring: MP

Bidding
1♣-p- 1♦-dble
?

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I am still a relative newcomer to 5 card major systems having grown up with Acol 12-14 no trump. Playing 2/1 with Walsh structure after 1♣ what do you bid now? Also in general what kind of hand would be shown by:
1. Pass
2. 1nt
3. 2♦
4. rdbl
If you have agreed not to play support redoubles, do these choices mean the same thing?

[Free]

I wouldn't know what RDbl is, but 1NT is clear imo. Supporting ♦ would indicate a poor Major and (3)4+♦s.

[temp3600]

I would understand these bids this way :

Pass : nothing interesting to add.
1NT : good minimum, stoppers in the majors. The given hand is fine for 1NT.

Playing support XX in diamonds :
2D and XX : diamond support

Not playing support XX in diamonds :
2D : support
XX : a bit ambiguous, strong hand, likely trying to penalize opponents

[Codo]

pass: Quite weak in the context of the bidding, balanced, no good fit.

XX support with three cardfs if discussed, else strong hand with no other clear bid

1 NT: A Hand where you had jumped to 2 NT without opps bidding.

2 Diamond 4+ card fit, weak if inf. minor is not established.

I would pass and bid 1 NT later...

[Wackojack]

I don't know if the following is non-standard but this looks logical to me:

1♣-p-1♦-dbl
?
In the context of a 15-17 1nt opening:

1nt = 12-14 balanced both majors stopped
2♦ = 4 card diamond support
pass = 12-14 balanced, at least 1 major not stopped
redouble = balanced with 3 diamonds and at least 1 major not stopped
2nt = balanced 18-19 with both majors stopped

With 18-19 balanced, say:
♠ AQxx
♥ Jx
♦ Axx
♣ AKxx

then redouble and if opps take out into:
1nt you double for take outl
2♥ you double for take-out
2♠ you bid 2nt showing 18-19
2♣ you use judgement according to vulnerability, double for penalties or 2nt