1 Club

1♣ opening

1♣

16+ HCP, any distribution, forcing to 1N

- 1♦:		0-7HCP, any distribution (see also: 2♥...4♥)
- 1♥:		8-12 HCP, 4+ ♠ (5+ or unbalanced), or balanced hand without 5-card major
- 1♠:		8-12 HCP, 4+ ♥ (5+ or unbalanced)
- 1N:		13+ HCP, any shape
- 2♣:		8-12 HCP, 6+ ♦ or 5+♦-4♣ or 5+♣-4♦, denies majors
- 2♦/♥:		good 6+ ♥/♠, 3-7 HCP, denies outside ace
- 2♠:		8-12 HCP, one-suiter 6+ ♣
- 2N:		8-12 HCP, 55+ minors
- 3m:		3-7 HCP, fair 7-card suit, can be passed (new suit is F1)
- 3♥:		3-7 HCP, a fair 8-card minor
- 3♠:		any solid suit, no top honour outside
- 4♣/♦:		8-card ♥/♠ with 1 loser (min. KDJ), no outside ace or king
- 4♥/♠:		8-card ♥/♠ with 2 losers (min. DJT), no outside ace or king

folytatás On intervention

Choice:

4441 and 5m-440: with a red shortness start with 1♥, with a black one start with 1♠
5m-422 can be bid as 2-suiter or balanced depending on its honour structure

1♣	-	1♦
?

- 1M:		4+ (!) suit, unlimited strength, FORCING for a round
- 1N:		18-20 HCP, balanced shape [16-19 if mini NT is on] Same bidding as after strong NT opening but replace GF with 6-7 HCP. (2♣ then 3m NAT, 6-7)
- 2N:		21-23 HCP, balanced shape, no 4-card major (20 too if mini NT is played)
- 3N:		24-27 HCP, balanced, no 4-card major. Continuation: Stayman (slam try if bids 4M later) and transfers
- 2m:		5+ suit, DENIES 4-card majors, about 16-22 HCP, can be passed. Cannot be a balanced hand, thus 6+ suit, or 5-4 minors
- 2M:		6+ suit, weak hand (16-18), can be passed
- 3m:		game strength, denies 4-card majors (transfers on 3♣ as after 2♣-re)
- 3M:		one-suiter hand with 8.5-9 playing tricks, can be passed

Overview of opener's bidding with major one-suiters (6+) after 1♣-1♦ depending on her strength

- 2M:	the weakest bid, cca. 16-18
- 1M-1x-2M:	some extra, cca. 19-22
- 3M:	good suit cca. 8.5-9 playing tricks
- 4M:	self-standing suit, 9.5-10 playing tricks
- 1M-1x-3M:	gameforcing

1♣	-	1♦
1M	-	?		This bid is 4+ suit, FORCING for a round, can be self-standing game strength.

Take a look, respones of 2M and above are very similar to responses on our 1M opening

- 1♠:	0-7 HCP. 4+ ♠ (no 4-card fit)
- 1N:	0-5 HCP., no 4-card fit, 3-card only without ruffing value
- 2♣:	6-7 HCP., no 3-card support, no 4-card ♠, no good 6-carder suit
- 2♦:	6+ dp., exactly 3-card support. Opener: - 2♥ (new): NAT F1 - 2M: can be passed, can be only 4-carder - the rest is NAT GF (3m is 5+ suit (can be 5-5), jump shifts are 5+ M, SPL, slam try)
- 2♥:	6+ ap, 5+ suit AND 3-card ♠ support (without that 2♣, then ♥)
- 2M:	0-5 adp., can be 3 trumps with ruffing potential. On this everything is natural game try, minor is Canapé, the major is 4-card only
- 2M+1:	mini SPL: 4+ trumps, 4-5 HCP and a side shortness (as on 1M opening), shows it on relay
- 2N:	(on 1♥-re): 6-7 HCP., 3-2-4-4 shape, stoppers. Then 3m and 3♥ are to be passed, 4m is ORKC
- 3m:	natural: good 6-carder suit, 6-7 points, denies 3-card support and a 4-card other major
- 3M:	6-7 ap., 4+ trumps, tagadja a szinglit (azzal mini SPL)
- 3N:	maxi SPL, 6-7 HCP, 4+ trumps, void in M-1
- 4x:	maxi SPL, 6-7 HCP, 4+ trumps (4M-1 singleton only, the rest can be void too and CYS follows on them)
- 4M:	8-12 tp., 4+ trumps, denies shortness

1♣	-	1♦	opener's 1M bid is forcing for a round, can be 4-cards suit
1M	-	1x	if 1x = 1♠: 0-7 HCP, 4+ suit, no 4-card kőr
?			if 1x = 1N: 0-5 HCP, no 4-card support (if has 3, then without ruffing value)

2m: probably Canapé suit, because responder denied ruffing value for the major suit
2M: 6+ suit, some extra strength (cca. 19-22), can be passed
3M: 6+ suit, gameforcing
3m: 5+ suit, GF; major can be 4- or 5-carder

1♣	-	1♦	opener's 1M is forcing for a round, can be 4-carder
1M	-	2♣	responder: 6-7 points (good 5), no 3+ support, no good 6-carder suit, no 4-card ♠
?

- 2♦:	waiting bid with no other suitable call (mostly weak) and denies 4-card ♥ after 1♠. Must be bid with all weak hands without 4-card ♥. Responder bids naturally, her 2♥ is a 5-card suit, correction to 2M is doubleton.
- 2♥:	4+ szín, F1, can be wek or strong, but not strong 5-5, that is a later 3♥ is weak and can be passed.
- 2M...3N:	natural GF, 3-level bids show 5+ suit, with 5-5 or a Canapé minor

1♣	-	1♦		opener: 5+ (mostly 6+) suit, no 4-card major, can be passed, ~16-22
2m	-	?		responder can pass with a very weak hand, she promises some strength when she bids:

- on 2♣ 2-level bids are transfers: (2♦ = 5+ ♥, 2♥ = 5+ ♠, 2♠ = not wishis to declare NT), similarly after 1♣-1♦-3♣ too
- however on 2♦ they are natural (with 5+ suit)
- jump shift: SPLINTER, good hand with 4+ trumps
- all other bid: natural, can be passed

1♣	-	1♦		opener: 6+ major, weak hand, i.e. 16-18 HCP, max. 8 tricks
2M	-	?		there is no reason to look for another suit, thus each bid promises fit:

- new suit: FFxxx suit, some fit (min. xx or H or better)
- jump: SPL, max. hand, xxx or better trump

Notice: this 2N structure supposes, that 2N opening is not strong balanced hand.
If 2N opening is NAT (21-22), then this bid is 23-24 and continued as a traditional strong 2NT opening

1♣	-	1♦		opener: 21-23 HCP, balanced hand, no 4-card major (20 too if mini NT is played)
2N	-	?		responder: 0-7 HCP, any distribution

- 3♣:	would like to stop in a suit. Similar responses to multi: - 3♦: nothing special - 3♥: enermous hand with káró fit, hopes to make 3N opposite a ♦ sign-off - 3♠: big hand with ♦ and ♥ fit - 3N: big hand with ♦♥ and ♠ fit. Transfer on this!
- 3♦♥:	Transfers. Difference from the usual is that they promise at least game try values (~3-4 points), thus 3M does not accept, with good hand 3N or 4M should be bid.
- 3♠:	both minors

1♣	-	2♦♥		Responder: transfer with semi-positive hand: 6+ ♥/♠ (a) 5-7 HCP, good 6-carder suit or (b) 3-7 HCP, fair 7+ suit, none of them contains outside ace
?

- 2M:	can be passed. If responder bids (with 7-card suit or with maximal hand), then bids his shortness
- 2M+1:	singleton ask. Either game try with fit (later bids 3-4M), or forcing hand with an own suit (3N or the suit), or looking for the good game (bids a game). Caution, DON'T bid it with slam try in responder's major (that is 3M)
- 2N:	(on 2♦) 5+ ♠, 0-1 ♥, NF
- 3m:	(and 2♥-3♥) natural, 7+ or strong 6-card suit, can be passed, short in responder's major
- 3M:	slam try with support, singleton ask (last step zooms into strength). Then ORKC

Going on after positive responses:

1♣	-	1♥		Responder: 8-12 HCP, 4+ ♠ or balanced
?

- 1♠:	Asks for hand description. On this: 1N: balanced 8-12, continue as on 1♦-1♠-1N. 2♣ = 4-card ♠, unbalanced. 2♦...3N = 5+ ♠, as on 1M-2♣-re CAUTION! With a minimal balanced hand it's worth bidding 1NT, in order to let the strong hand play it.
- 1N:	balanced minimum (18-20 or. 16-19 if mini NT is played). May have 5m-422 in the range
- 2♣♦♥:	support ask (extreme hand, lacking some specific honours).
- 2♠:	4♠-441, 16-19. Now: - 2N: singleton ask (mostly BAL), usual slam bidding (i.e. any suit can be trump) - 3♣: singleton ask, ♠ are trumps, then S1 (even 3N) is ORKC♠
- 2N:	4441 with singleton spade, unlimited Responder names trump suit, opener shows strength with steps: 16-17, 18-19, 20-21, etc. Responder can bid 3NT with weak hands only, with some extra he should ask with 3♣.

1♣	-	1♥		Responder: 8-12, 4+ ♠ or balanced
1N	-	?		opener: minimal balanced (may have 5m422 too)

- 2♣:	4♠, unbalanced
- 2♦:	balanced 8-12, which is not sure that wants to play 3NT (can be 5-4-2-2 if does not want to declare). Natural continuation.
- 2♥:	5♠-4m, 5♠-332, egyszínű 6+ ♠. Further bidding is as on strong NT opening, e.e. Responder's next bid is transfer too (3♠ = strong 5332).
- 2♠:	6♠-4x, bids the 4-card suit on 2N
- 2N...3♠:	as on 1♠-2♣ (2N = 5440, etc., but a 3♠ does not show range, opener bids 4m = ORKC(M) with good hand on that
- 3N:	to play (balanced 8-12, which is not interested in anything else)

1♣	-	1♠		Responder: 8-12 HCP, 4+ ♥, unbalanced hand
?

- 1N:

relay:

- 2♣:	4-card ♥, unbalanced.
- 2♦...	5+ ♥, almost like on 1M-2♣, but 5332 and 5440 are exchanged to bid ♥ less frequently

- 2♣♦♠:

support ask. Then control ask(s).
(extreme hand, lacking some specific honours)

- 2♥:

sets ♥ as trumps, singleton ask. Then S1 is ORKC or OCYS, higher steps are control asking bids

- 2N:

4441 with short ♥, unlimited.
Responder names trump suit, opener shows strength with steps: 16-17, 18-19, 20-21, etc.
Responder can bid 3NT with weak hands only, with some extra he should ask with 3♣.

- 3m:

SPL (not void), minimal hand with 4-card ♥. Now S1 = ORKC, 4♦ = transfer (you should declare it)

- 3♥:

minimal hand, 5+ trumps. Now S1: singleton ask. Then ORKC.

- 3♠:

void, minimal hand, 4+ ♥ (or going to ask keycards)

- 4m:

void, minimal hand, 4+ ♥ (or going to ask keycards)

1♣	-	1M	more hand types
L1	-	2♣	8-12, 4M-5+m or 4441
2♦	-	?	relay (when Responder promised 4-card ♥, then 2♥ sets ♥ as trumps and singleton ask)

- 2♥:	2-suiter hand with 5+ ♣. Now: - 2♠: relay, full scheme - 2N: relay, compact scheme (if only game is probable and wants to declare NT after 1♥ response) - 3♣: ORKC(♣), short in Responder's major - 3M: ORKC(M) with short ♣
- 2♠:	3-suiter hand. On 2N: - 3♣: both 4-card majors. Now 3♦=OCYS(m), 3M=OCYS(M) (here we know the short minor from the first response if it was 1♥ then responder has short ♦, if it was 1♠ then he has short ♣) - 3♦♥♠: short in the other major, 5♣/5♦/4441
- 2N...3N:	2-suiter hand with 5+ ♦ according to the full scheme

1♣	-	2♣		8-12, 5-4+ minors, or 6+ ♦, unbalanced hand, no 4-card major
2♦	-	?		relay

- 2♥:	5+ ♣, 4♦. S1 is relay, responder bids his shape according to the full 2-suiter scheme
- 2♠:	1-suiter hand (6+ ♦). Further bidding follows the 1-suiter scheme
- 2N...3N:	2-suiter hand 5+ ♦ and 4♣

1♣	-	3♠		running suit, no outside strength
?

- 3N:	Proposition. Bid on only with extra hand (8-card suit, or 7-card suit + void).
- 4♣:	Guessed the suit (3+ HCP in all suits!), singleton ask. Then R1=CYS (S1=singleton, S234=void+length), R2 = length-ask (6, 7, 8 etc)
- 4♦:	Bid your suit! In doubt (0-2 HCP in 2+ suits) this must be bid. Then singleton ask, CYS, length ask (6, 7, 8 etc)
- 4M:	pass if this is your suit (guessed), otherwise a proposition (bid only with 8-card suit)
- 5M:	(responder's long suit): bid slam if your suit is running opposite a void.

On interference

on (X): 1♦ = (5)6-7 points, any (but not suitable for jump bid), PASS = 0-5, XX = 13+, unbalanced, 1N = 13+ balanced, the rest is unchanged
on (1♦)-ra X = (5)6-7 points, any (but not suitable for jump bid), PASS = 0-5, the rest is unchanged
after the 5-7 points double and 1♦ bid later ...1M-2♣♦ mean the same as on 1♣-1♦-1M
on (1♥) PASS: 0-7, X has a 1♥ response, the rest is unchanged
on (1♠) PASS: 0-7, X 8-12 BAL or 4441 (on 1N 2♣ = 4441, 2♦...3N = BAL), 1N = 13+ any, 2x = 8-12 NAT, 3x = 5-7 NAT
on (1N...2♠): X = 5-7, plain bids are natural and GF, jump bids are game tries (5-7) with good 6+ suit, cue bid is balanced GF without stopper
on a natural 2♣ response 2♦ is relay (NAT bids, 3M = SPL), and due to this 2N = ♦
DBL of 2N and higher overcall is GF, can't bid suit (same from passed hand)
On later overcalls: we play takeout doubles as far as we son't know anything about our shape. If you pass a correctable call and later double it then it is a penalty double.
Doubles are penalty when we said something about our distribution (always after positive responses)
After a penalty double further doubles are penalties too.
In a forcing situation and direct position we bid with a ditributional hand only.
In competition opener's plain bids are relative weak and can be passed, stronger hands must be started with double or cue bid.