Burgay Strong Diamond
by Leandro Burgay, 1973
notes by Daniel J. Neill

Summary of Opening Bids:
1C = 12-14 NT, or any unbalanced 15-17
1D = 18+, artificial
1H = 12-14, 4+ cards, 4H-5+m, 4H-(441), 5332, 6H-3S, 6322, 5H-4/5S
1S = 12-14, 4+ cards, 4S-5+m, 4144, 5332, 6S-3H, 6322, 5+S-4H, 6S-5+H
1N = 15-17, no 5M
2C = 12-14, 6C or 5C-4D, but not 6-4
2D = 12-14, 6D or 5D-4+C, but not 6-4
2M = 12-14, 5M-4+m unbal, or 6M-1oM-3-3
2N = 12-14, any 7-crd suit
3m = 12-14, 6m-4om
3M = preempt, 7 crds (in 1/2 seat 2/top 3 honors and little else, 6 tricks NV, 7 V)
3N = 12-14, 7m-4om
4y = preempt


**********
1C
**********
Responses:
1D = any 0-7, or 8-10 with a long minor
	(enemy bid)
		X = 15-17 takeout
	Pass = rare but true
	1H = 12-17, 4(3)+H
		1S = nat
			3m = 5-5, NF
		1N = nat
			3m = 5-5, NF
		2C = NNF
			2D = canape, 15-17
		2D = NNF
		2N = 5-5 minors, 6-7 HCP
		JS = 7+ crds, 2/top 3
	1S = 12-17, 4(3)+S
		1N = nat
			3lower = 5-5 NF
			3H = 6S-4H
		2m = NNF
		2N = 5-5 minors, 6-7 HCP
		JS = 7+crds, 2/top 3
	1N = 12-14, 4-4 minors
		2N = 5-5 minors, 6-7 HCP
	2M = 17, good 6+ suit

1H = 4+H, 8+ HCP, may have longer minor, even longer spades if strong
	(enemy bid)
		X = penalty
	1S = 12-17, 4+S, may have longer minor
		1N = natural
			2m = canape, 15-17
			2S = 5+S, 15-17
			JS = 5-5
		2C = semi-natural, F1
		2D = semi-natural, F1
			2S = 5+S, 15-17
		2H = NNF
		2S = 4S, 8-11 (now 3S = 14, not 15-17)
		3H = invit
		3S = invit
	1N = 12-14 bal, denies 4S
		2D = semi-natural, F1
			2H = 3-crds
			2N = nat
			3D = 4-crds
		2H = NNF
		2S = 5+S, 4+H, F
			2N = nat
				3H = 5-5
		2N = invit
		3m = 4H-6m, F
		3H = invit
		3S = 4H-6S, F
	2C = 15-17, 5+C, F2N
	2D = 15-17, 5+D, F2N
		2N = nat
			4C = 5-5
	2H = normal raise, 12-14
	2N = 15+, 4+H, GF
		3C = 0-2 ctrls
		3D = 3 ctrls
		3H = 4 ctrls
		3S = 5 ctrls
		etc.
			relay = demands cues
			else = cue
	3m = 8-crds, AQ or AK, 15-17
	3H = 15 HCP, 4-crd supp, unbal, NF

1S = 4+S, 8+ HCP, may have longer minor
	(enemy bid)
		X = penalty
	1N = 12-14
		2C = semi-natural, F1
		2D = semi-natural, F1
			2S = 3-crds
			2N = nat
			3D = 4-crds
		2H = NNF, 5+S, 4+H
		2S = NNF
		2N = invit
		3m/3H = 4S-6other, F
		3S = invit
	2C = 15-17, 5+C (or 1444), F2N
	2D = 15-17, 5+D, F2N
	2H = 15-17, 5+H, F2N
		2N = nat
			4m = 5-5
	2S = normal raise, 12-14
	2N = 15+, 4+S, GF
		3C = 0-2 ctrls
		3D = 3 ctrls
		3H = 4 ctrls
		3S = 5 ctrls
		etc.
			relay = demands cues
			else = cue
	3m = 8-crds, AQ or AK, 15-17
	3S = 15 HCP, 4-crd supp, unbal, NF

1N = 8-10, bal, no major
2C = 11+ HCP, 4+C, denies M
	2M = 5+M, 15-17
	2N = 12-13
		3C = NF
		else = F
	3C = 15-17, later cues
	3N = 14
2D = 11+ HCP, 4+D, denies M
	2M = 5+M, 15-17
	2N = 12-13
		3D = NF
		else = F
	3D = 15-17, later cues
	3N = 14

2H = 6+ good H, 12+ HCP
	2N = 13-14 bal, even with 4H
	NS = 15-17 natural
	3H = 15-17, primary H, cues
	4H = 12 bal, 4-crds

2S = 6+ good S, 12+ HCP
	2N = 13-14 bal, even with 4S
	NS = 15-17 natural
	3S = 15-17, primary S, cues
	4S = 12 bal, 4-crds

2N = 8-10(-), 5+ 5+ minors
3C = 8-10(-), 6C-5D
3D = 8-10(-), 6D-5C
3H = 7H, 2 of top 3, nothing else, NF
3S = 7S, 2 of top 3, nothing else, NF

Handling Interference:
1C
	(X)
		Pass = 0-7
		XX = 10+
		1D/H/S = natural, 8+
		else = normal
	(1D)
		X = multi-way
			(a)	6-10 lower unbiddable suit (here, clubs)
			(b) 	8-10 NT, but no stopper
			(c)	psyche-revealer:  12+ HCP, 5+D (later cue,
				and opener must bid NT with a stopper)
			(d)	over (1S) overcall, 4+ hearts
				opener assumes such, and with a fit
				(i) 	bids 2H with a minimum
				(ii)	bids 3H with a reverse (cue or raise)
				(iii)	2N jump = 4H-5+minor, reverse
		1M = natural, 8+
		1N = 8-10
		2C = 11+, F1
		2D = GF takeout
		2M = ?
	(1H)
		X = multi-way (see above)
		1S = 4+ cards, 8+
		1N = 8-10
		2m = 11+, F1
		2H = GF takeout
		2S+ = ?
	(1S)
		X = multi-way (see above, includes hands with 4 hearts)
		2C/D/H = 11+, F1
		2S = GF takeout
		else = ?
	(1N)
		X = penalty, else weak
	(2D/H/S)
		X = penalty (75%)
		bids = NF
		JS = nat, force
		cue = general force

**********
1D
**********
Responses:
1H = 0-6 HCP, artif.
	1S = relay, spades or any 20+ unbal, or 23+ bal
		1N = 5-6, bal or 5C-4other
		2C = 0-4, 2nd negative
			2D = 20+, 4+ cards, F to 2N (later 3N = 4-crds 25+ NT)
				2S = 4+ cards
					2N = 1S-444 
					3C = canape
					3D = NF
					3S = good raise
			2H = 20+, 4+ cards, F to 2N (later 3N = 4-crds 25+ NT)
				2S = natural
					3m = canape
					3H = NF
			2S = 5+S, 18-19, NF
			2N = 23+ bal, may have 4-crd major
				3C = prepares some signoff
				3D = Stayman
				3M = GF (NS = cue raise, 4M = bad raise)
		2D/H/S = 5+ crds, 5-6 HCP
			2M = 4+ cards
				bids = nat, NF
		2N = 5C-332 5-6 HCP
		3C = 6+C, 5-6 HCP
		3D/H/S = 7 crds, 5-6 HCP
	1N = 18-20 bal
		2M = asking-bid in M
			step 1 = ?
			step 2 = ?
			step 3 = Hxxx
			step 4 = HHx
			step 5 = HHxx
	2C = nat, 18-19, occ. 4 cards (all bids NF now)
	2D = nat, 18-19, occ. 4 cards (all bids NF now)
	2H = nat, 18-19
	2N = 21-22 bal
		3C = prepares some signoff, forces 3D
		3D = Stayman
		3M = GF (NS = cue raise, 4M = bad raise)
1S = 7+ HCP, 0-2 ctrls, GF
	1N = 18-20
	2C = natural
		JS = 6 cards, 2/top 3
		DJS = 7 cards, 2/top 3
	2M = 5+ crds
		2S = 5+ cards
	2N = 21-22
	3C/D/H = support-ask (see later)
1N = 3 ctrls, GF
	2m = natural 4+ crds
		JS = 6 cards, 2/top 3
		DJS = 7 cards, 2/top 3
	2N = 18-20, everything stopped, no 5-crd suit
		3C = extended stayman
			3D = 18-19, then bid up the line
			3M/3N = 20, natural
	3C/D/H/S = support-ask
2C = 4 ctrls
	2D = 4+ cards (if 4, then reason for not bidding NT)
	2N = 18+ bal, everything stopped
2D = 5 ctrls
2M = 6+ suit, 0-4 HCP
2N = 6 ctrls
3C = 7 ctrls
3D = 8 ctrls

Vs. Interference:
(up to 2D)
	Pass = 0-6
	X = 7+, 0-2 ctrls
	step 1 = 3 ctrls
	step 2 = 4 ctrls
	etc...

(X)
	Pass = 0-6
	XX = 7+, 0-2 ctrls
	1H = 3 ctrls
	etc...

(2H+)
	Pass = negative
	suit = nat, GF
	2N = stopper, GF
	cue = very strong hand
	X = 7+ HCP, penalty-oriented

*********************************
Support-ask:
1D-bid[GF]-jump-shift = asks # cards in suit
	step 1 = 0-1 crds
	step 2 = 2 crds
	step 3 = 3 crds
	etc.

A new suit is then the same sort of ask for that suit.

If a support-ask is immediately followed by a NT bid, that is asking for top honors in the
previously-asked suit.
	step 1 = 0 of top 3
	step 2 = 1 of top 3
	step 3 = 2 of top 3

A second support-ask in a different suit may be followed by a trump-asking NT bid for that
suit.

**********************************

**********
1H/1S
**********
Responses:
1S = natural
	2S = 4S
	2N = 5S-5H
	3m = 6H-4m
	3H = 6H-3S-(3-1)
	4m = 6H-5+m
	4S = 6-5/5-6 majors
1N = natural, 8-10
	Pass = any hand that wants to pass
	2m = 5+ cards, 4M
	2M = 5+ cards, may be 5M-4m-2-2
	2H (after 1S) = 5S-4H
	2S (after 1H) = 5-5 majors (2N asks bid longer suit or minor frag)
	3-lower = 6M-4other
	3M = 6M-3-3-1m
	4-lower = 6M-5+other (1S...4H = 6-6)
2C = 11+ HCP, 4(3)+ cards
	2D = 4M-5D
	2M = minimum, NF
	2H (after 1S) = 5S-4H
	2S (after 1H) = 5-5 majors (2N asks bid longer suit or minor frag)
	2N = max, 5M
	3C = 5+ cards, 4M
	jump-shift 3-level = 6M-4other
	3M = 6M-3-3-1m
	jump-shift 4-level = 6M-5+other (1S...4H = 6-6)
2D = 11+ HCP, 4(3)+ cards
	2M = minimum, NF
	2N = max, 5M
	3D = 5+ cards, 4M
	3H (over 1S) = 6S-4H
	3M = 6M-3-3-1m
	4C = 6M-5+m (1S...4H = 6-6)
2M = 8-10, 4+ support
2H (over 1S) = 11+ HCP, 5+ cards
2S (over 1H) = GF, 5+ cards
2N = 4+ supp, slammish (responder continues to cue-bid or relay [waiting or cue])
	suit = natural
	3N = 5332, horrible
3M = 10-11, 4-crd support
3-level JS = 7-crds, 2/top 3, nothing else

Handling Interference:
(X)
	Pass = any weak, or a good raise
	XX = 10+
	NS = NF
	JS = F
(suit)
	X = doesn't promise suits (if followed by cue then asks stop or reveals psyche)
	NS = NF (except 1H-[1S]-2m = F1)
	2N = good GF, 4+crd support (cont's as 1M-2N)
	JS = F
**********
1NT
**********
Responses:
2C = any sign-off in a suit, or good 6-crd suit with nothing else
	2D = forced
		Pass/2H/2S/3C = weak, to play
		2N(C)/3D/3H/3S = 6 crds, 2/top 3, nothing else
2D = Burgay extended Stayman, 8+ HCP
	2H = 15-16, 4H  (2S = F1, 2N/3H = NF)
	2S = 15-16, 4S, denies 4H (2N/3H[5-6 crds]/3S = NF)
	2N = 15-16, no major (3M[5-6 crds] = NF)
	3C = 17, 4C-4D
	3D = 17, 4H-4S
	3H = 17, 4H, denies 4S
	3S = 17, 4S, denies 4H
	3N = 17, 4m333 [where is 5m332? - Dan]
		over all these, a minor rebid is natural 5+ slamtry, asking 5-step support
			(negative/Hxx/HHx/Hxxx/HHxx)
2H/2S/3C/3D = 10+ HCP, 5+ suit, asks support (3m tends to be slammish)
	step 1 = at best xxx(x) support
		rebidding the suit asks further
			3N = xx
			4m = Hx, natural 4+ suit
			raise = xxx(x)
		new suit = support-ask in this suit, as before
		2N (over 1N-2H-2S) = waiting (3H = Ax/Kx)
		3N = to play (opener corrects always with xxx[x])
	step 2/3/4/5 = Hxx/HHx/Hxxx/HHxx support
		rebidding suit = requests cue-bids
		new suit = support-ask in this suit, as before
			every new suit is a support-ask, 4N is BW
2N = GF, asks opener to bid a suit he does not have stopped
	3y = no stop (now 4m = NF)
3M = 6+ cards, invite
3N = to play
4m = "Alaska" transfer to 4M signoff (4C = H, 4D = S)
4M = to play

Handling Inteference:
(X)
	XX = 8+ HCP (later cue denies stop, 2N shows stop[forcing])
	bids = to play
(2y)
	Pass = 0-8
	X = penalty
	JS = natural GF, asks 5-step support
	cue = GF, no stopper (specifically 3S cue promises 4 hearts)
	2N = GF, with at least half-stopper (bid suits up the line)
		responder can cue later to show a half-stopper and likely minor fit
		if no stopper found, 4m is NF

**********
2C/2D
**********
Responses:
2M = NF constructive, 5+crds, raisable (NS = max, no fit, stopper
raises = preemptive
3-level JS = 6+ crds, invite
other minor = artif limit raise (return to 3m = minimum, else bid suits NOT stopped up the line)
2N = art GF
	(over interference, Pass = lower bid, X = stolen, else normal)
	3C = 5-4 minors (3D asks hi/lo/no short)
	3D = 6322
	3H = 6-3H-(3-1)
	3S = 6-3S-3om-1H
	3N = 5-5 minors
	4C = 6-5 minors
	4D = 6-6 minors
	4H = 7-5 minors
	4S = 7-6 minors
		natural cont's

Handling Interference:
(X)
	XX = invit. values
	NS = nat, NF
	2N = normal GF as above

(suit)
	NS = nat, NF
	cue = slammish raise

**********
2H/2S
**********
Responses:
2S = to play
3lower = 6+ cards, 0-1 support, invit. (new suit = max)
2N = artif., constr+ raise, or any good hand
	(over interference, Pass = lower bid, X = stolen, else normal)
	3m/3H = 5M-4m with sing m/oM
	3S/N = 5M-5C/D
	4m = 5M-6m
	4H = 6M-1oM-3-3
		responder can always sign off, or bid a suit not shown by opener as a cue
raises = preemptive/to play

Handling Interference:
(X)
	XX = interest in penalizing
	else = as normal

(suit)
	systems on (as much as possible)
	cue = slammish raise

**********
2N
**********
Responses:
3C = p/c
3D = strong ask
	4M = 7crds
	3H/S/N = 7-crd minor, cheapest 3-crd fragment
3M = nat, F1 BUPH, can raise with 2 cards

Handling Interference:
(X)
	XX = interest in penalizing
	bid = p/c
(bid)
	bids = natural

**********
3C/3D
**********
Responses:
minors = natural, to play
3M = forcing ask (BPH = nat NF)
	step 1/2/3/4/5 = 0-1/xx/xxx/Hx/Hxx
		now bids to play

Handling Interference:
(X)
	Pass = neg, or later bid major naturally
	3M = forcing ask as above, even BPH
	XX = penalty interest

**********
3H/3S
**********
Responses:
3S = F1
raise/3N/4oM = to play
4m = cue for M

**********
3N
**********
Responses:
4C = p/c for longer minor
4D = forcing ask
	5C = 7-crds
	4H = 7D, void
	4S = 7D, void
	4N = 7D, no void
4M = to play

**********
4H/4S
**********
Responses:
NS = cue for M