Siege
25.1.06
1C opening
Good 11-13 balanced; 17-19 balanced; or natural unbalanced without 4 diamonds
Responses -
* 1D = 4+H, diamonds may be longer if not strong enough to invite opposite a weak NT
* 1H = 4+S, as above
* 1S = 5+diamonds
* 1N = 5-11; no game opposite weak NT
* 2C = Natural (can be 5m4M GF), INV+ opposite weak NT
* 2X = 3-7, 6 card suit
* 2N = 6C, wants to play 3C opposite 17-19 bal
* 3C = 6C, to play opposite 13 bal, wants 3NT opposite 17 bal
After 1C:1D
* 1H = minimum, either 2-3 H balanced or 3 H unbalanced
* 1S = natural, unbalanced
* 1N = 17-19
* 2C = Natural, denies 3 H
* 2D = Good/bad raise
* 2H = 11-14 unbal with 4H or 13-15 unbal with 3H
* 2N = C single suiter, extras, denies 3 card support unless GF
* 3C = C single suiter, 3 H; Natural follow-ups, except 3H and 3D are inverted
1C:1H is similar, with 1S initially showing the weak NT without 4 card support. 2H is used as the good/bad raise, so 2D = H reverse. After opener's 3C rebid, 3H and 3S are inverted.
Raises over 1C:1R -
2R = Good/bad raise - either 11-13, good 18-19 bal, or unbal not suitable for a direct splinter. 4 card support unless 6C3M GF
2M = Unbalanced; 11-14 with 4 card support or 13-15 with 3 card support
Splinters below 3M = singleton, invitational+
Splinters above 3M = void
3M = 17-18 bal
After 1C:1R, 2R
Now:
2M = to play opposite weak NT
2M+1 = relay, GF opposite strong option
Others = short-suit trials opposite weak NT
3M = blocking opposite weak NT, GF opposite strong option
Over 2M:
2N = 15+, 5422/5431 with stiff honour
3C = 6C, 3-4M (GF if only 3)
3M = Good 18-19 bal
With H agreed: 2S = minimum with a void, now 2N asks: 3C = D, 3D = H; 3D = 1435 inv; 3S = 1435 GF
Over 2S, 3D/H = minimum with a void
Over 2M+1:
Step 1 = Weak NT, now nat game-tries
Step 2 = 6C3M
3M = Balancedish
3M-1 = a void, now step 1 asks; now step 1 = D void, higher = void in oM
3N = Balanced
4C = 6C4M
3S over 2S = 1435
1C:1D, 1H:?
* P = usually 5H332, weak.
* 1S = asks pard to bid 1N if bal, 2C if unbal (now 2D = range+shape enquiry)
* 1N = 4S4H, NF, choice of part-score
* 2m = 5H4+minor, NF, choice of part-score
* 2H = 6 cards, to play
1C:1H, 2D
2D = heart reverse, 2H = lebensohl (now 2S/N/3C = nat NF, higher = GF - 3D ART, 3H 5-6 shape, 3S three card support)
Transfer Checkback
This applies after 1C:1R, 1N; and, by an unpassed hand only, after 1C:1H, 1S and 1C:1D, 1H:1S, 1N.
2C = weak with diamonds or many invites. now bids invitational (3new = 5-5). Break the puppet to 2M with a min with 3 card support, except for 3S4H after a 1H response. After a 1D response - 3H = 4-4 GF, 3N = 4-5 GF.
2D, 2H transfers. Transfer to own suit = as above, except 2D:2H, 2S = Inv 4-5. Transfer to other major as before (1C:1D, 1N:2H = NF, 1C:1H, 1N:2D looking for preference. Be aware that opener may occasionally be 2-2 in majors for a preference to 2S).
2S = Clubs (6+ unless GF), or inv with diamonds. 2N = like, 3C = don't like//3D = inv with 6D, 3H = D fragment, 3M = oM fragment
2N = Baron style
3C = Diamond splinter - 4414 or 4405
3D = Club splinter - 4441/(43)51
3M = Splinter in oM - (41)44 or (40)(45)
1C:1S sequences
NB 1S will have at least 2 clubs unless 8+points (3=3=5=2 shape)
1N = 11-13 bal or 11-14 (42)25 or (43)15. After a 1st NV opening, this is 14-16, or 13 if unbal.
2C = 11-15, 5+clubs unbalanced
2D = 11-14, usually unbalanced if only 3 diamonds
2H = 17-19 balanced
2S = (43)15, 16+
2N = 6+clubs, 15+. Denies 3D unless GF strength. May have 4H/S (intends to rebid them/raise partner's major bid).
3C = 6C3D, 15-17
3D = 15-17, unbalanced with 3 diamonds, shortage in a major
3M = Splinter, GF
After 1C:1S, 2H - responder usually relays with 2S, now 2N = min with poor diamonds (Jxx = poor), 3C = max with poor diamonds, 3D = min with good diamond fit, 3M/N = max, good diamond fit, natural. The alternatives to relaying - ???
After 1C:1S, 2S - 2N = Leb (now 3D = 6D 8-11 (GF), 3M = 3352 strength in suit bid). others = natural, forcing, decent hand. 3N to play.
1C:1N sequences
Pass = 11-13. Unbal 11-13 can pass or bid 2C.
2C = 11-16 5+clubs. Now pass/raise on min or bid 2D/H/S/N natural game-try with extras. 3X = splinter (5+clubs), 3N = upgrade
2D = 17-19 bal, now 2N = nat suggestion to play, 3C = nat inv, 2H/2S = nat 3 cards GF, 3D = nat 5-5 GF, 3H/S = spl, 3N to play
2M = 5+C4M, now step 1 = leb
2N = 15+, 6+clubs, if GF then no shortage
3C = Preemptive
3X = splinter
1C:2C sequences
2D = minimum balanced (14-16 1st NV)
2H = Balanced, either unsure over who should declare or wishes not to. Now stop showing bids. 2NT now from either side is NF, otherwise GF
2S = Clubs, inv+. Pard bids 2N suitable or 3C unsuitable, then 3C = natural invitational with a weak suit (denies KQ or A), 3D = natural 5-5 or 4-6, 3H = 1-3 majors, 3S = 3-1 majors, 3N = to play
2N = Forces 3C. Now 3D = (23)44 slam-try; 3H = 2245 slam-try (now 3N = disc); 3S = 2425, initially CoG; 3N = 4225 CoG; 4C = 4225 slam-try (now 4D sets spades, others = cues for clubs)
3C = diamond splinter, 3-4 cards in each major
3D = 6C4M GF - forces 3H - now 3S = H, 3N+ = S.
3H = 4H, 0-1S, 5+C
3S = 4S, 0-1H, 5+C
3N = to play
2M = nat unbal, could be 3 cards
Now 3C = inv, others = GF, 3M promises 4 card support
2N = 17-19 bal
All bids natural and forcing. Responder's 3rd bid, when looking for slam, will often be shape-showing, even at the 4 level.
3C = 6+cards; NF 1st NV, GF otherwise
3new = splinter
3NT = 15-17 (223)6/2227
4C = sets trumps
After 1C:1S, 1N -
2C puppets 2D then next bid INV
2D/H/S/3C all natural and GF
2N = Pick a minor
3D = C splinter
3H = 3H, 0-1S
3S = 3S, 0-1H
Responses -
* 1D = 4+H, diamonds may be longer if not strong enough to invite opposite a weak NT
* 1H = 4+S, as above
* 1S = 5+diamonds
* 1N = 5-11; no game opposite weak NT
* 2C = Natural (can be 5m4M GF), INV+ opposite weak NT
* 2X = 3-7, 6 card suit
* 2N = 6C, wants to play 3C opposite 17-19 bal
* 3C = 6C, to play opposite 13 bal, wants 3NT opposite 17 bal
After 1C:1D
* 1H = minimum, either 2-3 H balanced or 3 H unbalanced
* 1S = natural, unbalanced
* 1N = 17-19
* 2C = Natural, denies 3 H
* 2D = Good/bad raise
* 2H = 11-14 unbal with 4H or 13-15 unbal with 3H
* 2N = C single suiter, extras, denies 3 card support unless GF
* 3C = C single suiter, 3 H; Natural follow-ups, except 3H and 3D are inverted
1C:1H is similar, with 1S initially showing the weak NT without 4 card support. 2H is used as the good/bad raise, so 2D = H reverse. After opener's 3C rebid, 3H and 3S are inverted.
Raises over 1C:1R -
2R = Good/bad raise - either 11-13, good 18-19 bal, or unbal not suitable for a direct splinter. 4 card support unless 6C3M GF
2M = Unbalanced; 11-14 with 4 card support or 13-15 with 3 card support
Splinters below 3M = singleton, invitational+
Splinters above 3M = void
3M = 17-18 bal
After 1C:1R, 2R
Now:
2M = to play opposite weak NT
2M+1 = relay, GF opposite strong option
Others = short-suit trials opposite weak NT
3M = blocking opposite weak NT, GF opposite strong option
Over 2M:
2N = 15+, 5422/5431 with stiff honour
3C = 6C, 3-4M (GF if only 3)
3M = Good 18-19 bal
With H agreed: 2S = minimum with a void, now 2N asks: 3C = D, 3D = H; 3D = 1435 inv; 3S = 1435 GF
Over 2S, 3D/H = minimum with a void
Over 2M+1:
Step 1 = Weak NT, now nat game-tries
Step 2 = 6C3M
3M = Balancedish
3M-1 = a void, now step 1 asks; now step 1 = D void, higher = void in oM
3N = Balanced
4C = 6C4M
3S over 2S = 1435
1C:1D, 1H:?
* P = usually 5H332, weak.
* 1S = asks pard to bid 1N if bal, 2C if unbal (now 2D = range+shape enquiry)
* 1N = 4S4H, NF, choice of part-score
* 2m = 5H4+minor, NF, choice of part-score
* 2H = 6 cards, to play
1C:1H, 2D
2D = heart reverse, 2H = lebensohl (now 2S/N/3C = nat NF, higher = GF - 3D ART, 3H 5-6 shape, 3S three card support)
Transfer Checkback
This applies after 1C:1R, 1N; and, by an unpassed hand only, after 1C:1H, 1S and 1C:1D, 1H:1S, 1N.
2C = weak with diamonds or many invites. now bids invitational (3new = 5-5). Break the puppet to 2M with a min with 3 card support, except for 3S4H after a 1H response. After a 1D response - 3H = 4-4 GF, 3N = 4-5 GF.
2D, 2H transfers. Transfer to own suit = as above, except 2D:2H, 2S = Inv 4-5. Transfer to other major as before (1C:1D, 1N:2H = NF, 1C:1H, 1N:2D looking for preference. Be aware that opener may occasionally be 2-2 in majors for a preference to 2S).
2S = Clubs (6+ unless GF), or inv with diamonds. 2N = like, 3C = don't like//3D = inv with 6D, 3H = D fragment, 3M = oM fragment
2N = Baron style
3C = Diamond splinter - 4414 or 4405
3D = Club splinter - 4441/(43)51
3M = Splinter in oM - (41)44 or (40)(45)
1C:1S sequences
NB 1S will have at least 2 clubs unless 8+points (3=3=5=2 shape)
1N = 11-13 bal or 11-14 (42)25 or (43)15. After a 1st NV opening, this is 14-16, or 13 if unbal.
2C = 11-15, 5+clubs unbalanced
2D = 11-14, usually unbalanced if only 3 diamonds
2H = 17-19 balanced
2S = (43)15, 16+
2N = 6+clubs, 15+. Denies 3D unless GF strength. May have 4H/S (intends to rebid them/raise partner's major bid).
3C = 6C3D, 15-17
3D = 15-17, unbalanced with 3 diamonds, shortage in a major
3M = Splinter, GF
After 1C:1S, 2H - responder usually relays with 2S, now 2N = min with poor diamonds (Jxx = poor), 3C = max with poor diamonds, 3D = min with good diamond fit, 3M/N = max, good diamond fit, natural. The alternatives to relaying - ???
After 1C:1S, 2S - 2N = Leb (now 3D = 6D 8-11 (GF), 3M = 3352 strength in suit bid). others = natural, forcing, decent hand. 3N to play.
1C:1N sequences
Pass = 11-13. Unbal 11-13 can pass or bid 2C.
2C = 11-16 5+clubs. Now pass/raise on min or bid 2D/H/S/N natural game-try with extras. 3X = splinter (5+clubs), 3N = upgrade
2D = 17-19 bal, now 2N = nat suggestion to play, 3C = nat inv, 2H/2S = nat 3 cards GF, 3D = nat 5-5 GF, 3H/S = spl, 3N to play
2M = 5+C4M, now step 1 = leb
2N = 15+, 6+clubs, if GF then no shortage
3C = Preemptive
3X = splinter
1C:2C sequences
2D = minimum balanced (14-16 1st NV)
2H = Balanced, either unsure over who should declare or wishes not to. Now stop showing bids. 2NT now from either side is NF, otherwise GF
2S = Clubs, inv+. Pard bids 2N suitable or 3C unsuitable, then 3C = natural invitational with a weak suit (denies KQ or A), 3D = natural 5-5 or 4-6, 3H = 1-3 majors, 3S = 3-1 majors, 3N = to play
2N = Forces 3C. Now 3D = (23)44 slam-try; 3H = 2245 slam-try (now 3N = disc); 3S = 2425, initially CoG; 3N = 4225 CoG; 4C = 4225 slam-try (now 4D sets spades, others = cues for clubs)
3C = diamond splinter, 3-4 cards in each major
3D = 6C4M GF - forces 3H - now 3S = H, 3N+ = S.
3H = 4H, 0-1S, 5+C
3S = 4S, 0-1H, 5+C
3N = to play
2M = nat unbal, could be 3 cards
Now 3C = inv, others = GF, 3M promises 4 card support
2N = 17-19 bal
All bids natural and forcing. Responder's 3rd bid, when looking for slam, will often be shape-showing, even at the 4 level.
3C = 6+cards; NF 1st NV, GF otherwise
3new = splinter
3NT = 15-17 (223)6/2227
4C = sets trumps
After 1C:1S, 1N -
2C puppets 2D then next bid INV
2D/H/S/3C all natural and GF
2N = Pick a minor
3D = C splinter
3H = 3H, 0-1S
3S = 3S, 0-1H
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