Two-way checkback, introduced by Kit Woolsey in an
article in Bridge Today, uses the rebids of
two of either minor by responder after opener's 1NT
rebid as artificial and forcing. In the Woolsey
style, 2 puppets to 2 to play 2
or 3 or to invite game in various strains.
2 over 1NT is artificial and game forcing.
Two-way is super if playing weak notrumps, so
that a 1NT rebid by opener shows extra values.
With those methods, responder will often have a
game forcing hand; indicating that at the level
of 2 is quite helpful. Two-way also is
nice when playing Walsh-style responses to 1,
because responder can play 2 without fear of
correction back to his short major.
Details are below with a few interesting tinkers.
"Purish" means "most of the high cards in the long
suits. "m" means a minor suit; "M" means a major
suit; "OM" means the other major; "om" means the
2 = relays to 2
2 = game forcing, asks for shape
2M = to play
2OM = if hearts, no game interest
if spades, 4-4, invitational, not forcing
2NT = natural invitational 1
3m = game forcing, purish 5-5
3om = game forcing, purish 5-5
3M = game forcing, purish 6+
3OM = if hearts, game forcing, purish 5-5
if spades, game forcing, purish 6-5
3NT = to play
4 = Gerber (RKC?)
4 = usually 6331 with stiff, very good suit, slam interest
4M = to play
4oM = stiff, same as 4, I guess
4NT = natural, invitational (what's 2...4NT?)
1m-1M; 1NT-2; 2-?
2M = 5 card suit, invitational, nonforcing
2OM = if hearts, 5-4 or 5-5, invitational, nonforcing
if spades, 4-5 invitational, nonforcing
2NT = invitational, shows opener's minor 1
3 = to play 1
3 = invitational, natural
3M = strong invite, 6+
3OM = if hearts, strong invite, 5-5
if spades, ?
3NT = 5 card M, choice between 3NT and 4M
higher bids = ?
1m-1M; 1NT-2; ?
1) bid 4 of the other major
2) bid 3 of responder's major
3) rebid a six-bagger
 show 2-2-4-5 or 2-2-5-4?
5) rebid 2NT
This set of choices is due to Woolsey, probably
mostly intended for weak NT systems; this is most
likely to get the partnership to play the hand from
the strong NT's side. He claims that it doesn't
really matter which of the first two is highest
priority, and some others prefer to show 3-card
support first, while others prefer to bid hearts
1m-1M; 1NT-2; any-?
2 = if 1M = 1, then 2 = 6-card suit, notrumpy hand
if 1M = 1, then 2 = ?
2NT = 1 random and forcing with doubt about 3NT? (probably 17-count)
3any = game forcing, notrumpy 5-5 or 6+ single suit
3NT = to play
We play 2-way Checkback after 1-1; 1NT
and 1-1; 1NT, also. All sequences are
what one might expect, but here are some examples:
2 = good 5-card heart suit
2 = two good spades, say Q10 or better
2N = nothing special
3m = solid stopper, weak doubleton in other minor
2 is how we get to 2 and 3 contracts
2 is still artificial and game forcing
2 then 2NT is invitational with clubs
1 Ed Davis came up with some tinkers to this
to add accuracy at the cost of memory. Here they are.
1m-1M; 1NT-2NT is a relay to 3
1m-1M; 1NT-2NT; 3-?
pass = signoff with clubs
3 = m support (4+,) lower stiff
3oM = m support (4+,) higher stiff
3M = 5224 (4m, 5M,) doubletons are xx.
3NT = 4225 (5m, 4M,) doubletons are xx.
1m-1M; 1NT-2; 2-2NT = natural, invitational
1m-1M; 1NT-2; 2-3 = natural, invitational
1) show hearts
2) show spades
3) bid 5+ card minor, good suit
4) bid 2NT
April 15, 1996