PASSED HAND BIDS also need agreements between partners  
Lets propose here some new agreements for "passed hand bids" and consider that, for a passed hand, there are no more agreements like: New Minor Forcing, Bergen Raises, Weak Jump Shift, Jacoby 2nt for majors, Inverted Minors.

PART1 - After Minor Open

RULE#1 - After an opening in a minor suit all responses in jump to level 2 by a passed hand are constructive bids that shows 5+ cards in a good suit with 10-11 hcp and that imply in support of 4+ cards in Opener's minor suit to avoid possible misfit.
Responder Opener
  pass         1
   2  <= AQJ64 xx K1082 xx or KQ964 Qx QJ82 J3
Responder Opener
  pass         1
   2  <= Qx
KQJxx K1082 xx or Ax A109xx J10862 x
Responder Opener
  pass         1
   2  <= AJ1094 xx Q2 A1092 or KJ1094 xx Q2 KQ92
Responder Opener
  pass         1
   2  <= A6 KQ10xx J2 J1092 or AJ6 KQ10xx 2 J962
Responder Opener
  pass         1
   2  <= 64 xx AK982 KJ92 or 64 xx KQ1092 AJ92

RULE#2 - After an opening in a minor a support in jump at level 3, by a passed hand, means 5+ cards and 10-11 hcp but a simple raise support at level 2 means 4+ cards and 6-9 hcp, so the support at level 3 is more strong than the support at level 2.
Responder Opener
  pass         1
   3  <= A64 xx KJ1082 Q10x or KJ4 xx AJ1082 Q10
Responder Opener
  pass         1
   2  <= A64 xx J1082 K10x or  Q64 x J10852 A10x
Responder Opener
  pass         1
   2  <= xxx xx J10xx AK109
Responder Opener
  pass         1
   3  <= xx Kx J10xx AK1097

RULE#3 - After an opening in a minor a response by a passed hand in another suit at level 3 is a splinter bid with 10-11 hcp showing support of 5+ cards:
Responder Opener
  pass         1
   3  <= 4 A73 KJ1082 Q108x  splinter shorter in Spades
Responder Opener
  pass         1
   3  <= A64 x KJ1082 K108x  splinter shorter in Hearts
Responder Opener
  pass         1
   3  <= A64 QJ2 QJ10842 x  splinter shorter in Clubs
Responder Opener
  pass         1
   3  <= x Kxx J10xx AK1092  splinter shorter in Spades
Responder Opener
  pass         1
   3  <= Axx x Q10xx KQ1092  splinter shorter in Hearts
Responder Opener
  pass         1
   3  <= Axx Kxx x K109762  splinter shorter in Diamonds

Note1: Of course all splinters in a minor means support of 6+ cards because these splinters denies a major 4 cards.

RULE#4 - After a passed hand bid support at level 3 in the minor opened by partner, Opener's second bid at level 3 is a try to 3nt showing up the line his stoppers.
Responder Opener
  pass         1
   3           3 <= AK6 Q2 AJ1084 KQ9
                      denies a full stopper in and shows stopper in
  3nt <= J6 A102 Q8532 A32   
Responder Opener
  pass         1
   3           3 <= AQ J2 AJ84 K9732  shows stopper in
   3  <= K106 102 Q85 AJ654 shows stopper in and denies
                  4 <= denies stopper in so not forcing
  pass    

RULE#
5 - After a minor opening in third or fourth position the response bid from passed hand in 2nt means exactly 11 hcp with a balanced hand and good middle cards and denies 4 cards major.
Responder Opener
  pass         1
   2nt  <= K106 Q102 J104 AJ109
Responder Opener
  pass         1
   2nt          <= K109 K2 K1094 Q932            
         

After 1 opening and no interference Responder bids:
Responder Opener
 pass           1
   ?
  1   <= deny major and shows generally 5+ cards and 6+ hcp
  1   <= 4+ cards and may have 4+ so not up the line sequence
  1   <= 4+ cards and may have 4+ so not up the line sequence
  1nt  <= deny major and 5 cards minor 6-10 hcp
  2   <= 4+ cards - 6-9 hcp - not inverted for passed hand
  2   <= 5-4 and 10-11 hcp - construtive bid
  2   <= 5-4 and 10-11 hcp - construtive bid
  2   <= 5-4 and 10-11 hcp - construtive bid
  2nt  <= 4333 4432 and 11 hcp - good middle cards 10/9
  3   <= 5+ cards and 10-11 hcp no singleton deny major
  3   <= splinter singleton with 5+ and 10-11 hcp deny major
  3   <= splinter singleton with 5+ and 10-11 hcp deny major
  3   <= splinter singleton with 5+ and 10-11 hcp deny major 
no other razonable bids for these passed hand

After 1 opening and no interference Responder bids:
Responder Opener
 pass           1
   ?
  1   <= 4+ cards and 6+ hcp
  1   <= 4+ cards and 6+ hcp
  1nt  <= deny major and 5+ cards - 6-10 hcp
  2   <= 5+ cards - deny major - 10-11 hcp
  2   <= 4+ and 6-9 hcp
  2   <= 5-4+ and 10-11 hcp
  2   <= 5-4+ and 10-11 hcp
  2nt  <= 4333 4432 and 11 hcp - good middle cards 10/9
  3   <= splinter singleton with 6+ cards and 10-12 hcp
  3   <= splinter singleton with 5+ cards and 10-11 hcp
  3   <= splinter singleton with 5+ cards and 10-11 hcp  
no other razonable bids for these passed hand

PART2 - After Major Open

RULE#6 - After an opening in a major suit (1/1) balanced passed hand with 10-11 hcp having support use the Drury 2 way convention where response in 2 shows 3 cards support and response in 2 shows 4 cards support.
Responder Opener
  pass         1
   2  <= A62 Q107 J1084 KJ9  or  62 Q107 KJ1084 KQ9
Responder Opener
  pass         1
   2  <= A6 Q1072 J1084 KJ9  or  K6 K1073 84 KJ982 
               4 cards support give more strength in distribution
Responder Opener
  pass         1
   2  <= A62 KQ7 J10842 J9  or  Q62 KQ7 A10842 93
Responder Opener
  pass         1
   2  <= AJ82 72 Q1084 KJ9  or  10862 AK7 J10842 K9
               4 cards support give more strength in distribution
Responder Opener
  pass         1
   2  <= 82 AK972 Q108 QJ9 - denies support
       this is not Drury just a positive response in showing 10-11 hcp

RULE#7 - No more Bergen Raises - After an opening in a major suit (1/1) a passed hand having 9-11 hcp and 4 cards support with a side 5 cards suit headed by 2 top honors should inform his partner bidding another suit in jump to level 3 (Fit Showing Jump) to show this special hand 5422 or 5431 where honors are located in the suit bidded and in partner's open suit.
Responder Opener
  pass         1
   3  <= 62 Q1072 84 AKJ93 <= fit showing
Responder Opener
  pass         1
   3  <= 76 K1072 AQJ842 96  <= fit showing
Responder Opener
  pass         1
   3  <= A652 97 42 KQJ92  <= fit showing
Responder Opener
  pass         1
   3  <= K982 72 AK1084 92  <= fit showing
Responder Opener
  pass         1
   3  <= J1082 KQ1072 Q84 9  the singleton have 3 points
                                      
RULE#8 - After an opening in a major a passed hand with 5/6 cards support can bid a constructive splinter in 4/4 with 9-12 points
Responder Opener
  pass         1
   4  <= K106 K10732 2 A962  <= splinter
Responder Opener
  pass         1
   4  <= A98652 97 KQ42 2   <= splinter

RULE#9 - No more Jacoby 2nt - After a major opening in third or fourth position the bid response from a passed hand in 2nt means exactly 11 hcp with a balanced hand and good middle cards and denies 4 cards major and support in the Opener's suit.
Responder Opener
  pass         1
   2nt  <= K106 92 QJ104 AJ109  <= invitation for 3nt
Responder Opener
  pass         1
   2nt          <= 63 AJ10 K1094 QJ82  <= invitation for 3nt    

RULE#10 - After an opening in a major in third or fourth position a balanced passed hand having support:
a) with 3 cards and 6-9 hcp bids support at level 2;
b) with 4 cards and 5-7 hcp bids support at level 2;
c) with 4 cards and 8-9 hcp bids support at level 3;
d) with 5/6 cards and 6+ hcp bids support at level 4; 

Responder Opener
  pass         1
   2  <= J106 Q92 Q104 K1092    <= 3 cards and 6-9 hcp
Responder Opener
  pass         1
   2  <= J106 Q982 Q104 Q1092  <= 4 cards and 5-7 hcp
Responder Opener
  pass         1
   3  <= 106 Q982 Q104 A1092   <= 4 cards and 8-9 hcp
Responder Opener
  pass         1
   4  <= 86 Q9732 Q4 A1092       <= 5 cards and 6+ hcp

Responder Opener
  pass         1
   2  <= J63 AJ10 K10984 82      <= 3 cards and 6-9 hcp
Responder Opener
  pass         1
   2  <= J632 KJ10 J10984 82    <= 4 cards and 5-7 hcp
Responder Opener
  pass         1
   3  <= QJ63 53 A10984 J2       <= 4 cards and 8-9 hcp
Responder Opener
  pass         1
   4  <= K10643 52 A1098 86    <= 5 cards and 6+ hcp    

After 1 opening and no interference Responder bids:
Responder Opener
 pass           1
   ?
  1   <= up to 4 cards and 6-11 hcp (nt inverted after 1 open)
               if not playing inverted-nt then 1 shows 4+ cards
  1nt  <= 5+ cards and 6-11 hcp - one-round force (nt inverted)
               if not playing inverted-nt then 1nt denies 4 and shows
               5-11 hcp - also can have support 3 cards with 10-11 hcp
               that will be bidded at level 3.
  2   <= Drury - 3 cards support and 10-11 hcp
  2   <= Drury - 4 cards support and 10-11 hcp
  2   <= 3 cards support and 6-9 hcp or 4 support and 5-7 hcp
  2   <= articial bid - 5-5 in the minors 6-9 hcp
  2nt  <= 4432 5332 and 11 hcp - maximum hand with 2 support
  3   <= Fit Showing 4 support - 5 with 2 top honor 10-11
  3   <= Fit Showing 4 support - 5 with 2 top honor 10-11
  3   <= 4 cards with 8-9 hcp
  3   <= splinter singleton with 4+ support and 9-12 points
  4   <= splinter singleton with 4+ support and 9-12 points
  4   <= splinter singleton with 4+ support and 9-12 points 
  4   <= to play - 5+ cards support with 6-9 hcp

no other razonable bids for these passed hand

After 1 opening and no interference Responder bids:
Responder Opener
 pass           1
   ?
  1nt  <= shows 5-11 hcp - one round-force
               Responder may also have 3 cards support with
               10-11 hcp that will be bidded at level 3 
               When Responder has 2 cards amd 10-11 hcp ub a
               distribution 4432/5332 Responder must bid 2nt
               after 2/2/2 when no fit is found
               in case Responder has long suit he must bid it
               up the line, in case Responder has 6-9 hcp and no fit
               is found he bids 2 or pass if 2 is bidded by Opener.
  2   <= Drury - 3 cards support and 10-11 hcp
  2   <= Drury - 4 cards support and 10-11 hcp
  2   <= 5+ cards positive bid with 10-11 hcp
  2   <= 3 support and 6-9 hcp or 4 support and 5-7 hcp
  2nt  <= 4432 or 5332 and 11 hcp - maximum hand with 2 cards
  3   <= Fit Showing 4 cards - 5 with 2 top honors 10-11 hcp
  3   <= Fit Showing 4 cards - 5 with 2 top honors 10-11 hcp
  3   <= Fit Showing 4 cards - 5 with 2 top honors 10-11 hcp
  3   <= 4 cards support and 8-9 hcp
  4   <= splinter singleton with 4+ cards support 9-12 points
  4   <= splinter singleton with 4+ cards support 9-12 points
  4   <= splinter singleton with 4+ cards support 9-12 points
  4   <= to play - 5+ cards support 5-9 hcp

no other razonable bids for these passed hand

AFTER MAJOR OPEN AND 1NT RESPONSE THEN 2NT GF
Responder Opener
  pass          1
   1nt           2nt <= GF read GF-hand.htm
   3 <= search the hand (54xx or 6xxx or 7xxx) with 18-20 hcp

Responder Opener
  pass          1
   1nt           3nt <= 5332 with 18-19 hcp

Responder Opener  when NOT playing inverted nt
  pass          1
   1nt           2nt <= GF read GF-hand.htm
   3 <= search the hand (54xx or 6xxx or 7xxx) with 18-20 hcp

Responder Opener
  pass          1
   1nt           3nt <= 5332 with 18-19 hcp

Responder Opener  when playing inverted nt
  pass          1
   1nt  <= 5 cards
                   2nt <= GF GF-hand.htm  

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PART3 - After Minor Opening and Opener's second bid in 1nt

RULE#9 - After an opening in 1/1 in third or fourth position the priority of a passed hand is to inform partner if he has a major suit and if Operner's second bid is 1nt then passed hand:
- passes;
- rebid his major suit as sign-off;
- support partner's open suit at level 2 with 6-9 hcp;
- support partner's open suit at level 3 with 10-11 hcp;
- make a invitation with 11 hcp bidding 2nt;
- bids his long minor suit as sign-off.
 
Responder Opener
  pass         1
  1            1nt <= can have 4 cards or 5 cards
  2   <= not more NMF and shows 45+ 6-9 hcp sign-off

Responder Opener
  pass         1
  1            1nt <= can have 4 cards or 5 cards
  2   <= shows 54+  with 6-9 hcp (Opener must choose major)

Responder Opener
  pass         1
  1            1nt <= can have 4 cards or 5 cards
  3   <= shows 55  with 10-11 - invitation to game in a major

Responder Opener
  pass         1
  1            1nt  <= denies 4 cards and can have 5 cards
  2   <= not more NMF and shows 45+ 6-9 hcp

Responder Opener
  pass         1
  1            1nt  <= denies 4 cards and can have 5 cards
  3   <= shows 55+ with 10-11 hcp  - try to game

Responder Opener
  pass         1
  1 <= 5 cards and denies major or support of 4 cards
                   ?
                  1 <= shows 5-4 or 4414
                  1 <= shows 5-4
                  1nt <= can have both major with 3 cards
                              or a 4432 hand with 2

Responder Opener
  pass         1
   1           1nt <= can have  4 cards or 5 cards
   2           not more NMF and shows 45+ 6-9 hcp - sign-off

Responder Opener
  pass         1
   1           1nt <= deny 4 cards and can have 5 cards- 
   2           not more NMF and shows 45+ 6-9 hcp - sign-off

Responder Opener
  pass         1
  1            1nt <= can have 4 cards or 5 cards
  2   <= shows 54+  with 6-9 hcp - sign-off

Responder Opener
  pass         1
  1            1nt <= can have 4 cards or 5 cards
  3   <= shows 55  with 10-11 - invitation to game in a major

PART4 - After Minor Opening and Rebid his suit

RULE#10:
The 2/1 system, as a natural system, has some difficults in define the strength of the hand and the suit's quality of a 6th card minor suit rebid, so we need some agreements between partners for take better decision. Thus lets assume that:
a) a rebid minor's suit is 6+ cards (but may have exceptions);
b) a rebid minor's suit shows a range 12-16 hcp;
c) a rebid minor's suit in jump shows 6+ cards with 17-19 hcp;
d) after an opening in a minor and a response in suit at level 1 a jump to 3nt shows a solid minor suit like: AKQxxxx or AKQJxx with 8 sure  tricks in the hand opened;
e) after a minor opening Opener's second bid in 2nt shows a balanced hand with 18-19 hcp and the minor suit could be 3, 4 or 5 cards. 

Responder Opener
  pass         1
  1            2 <= shows 6 cards and 12-15 hcp
  2   <= shows 54+  with 6-9 and singleton in Clubs - sign-off, so Opener should pass or correct to 2 - here Spades = or > Hearts

Responder Opener
  pass         1
  1            2 <= shows 6 cards and 12-15 hcp
  2   <= 45+ with 6-9 hcp and singleton Clubs - sign-off, so here Opener should pass because Diamons > Hearts

Responder Opener
  pass         1
  1            2 <= shows 6 cards and 12-15 hcp
  2   <= shows 54+  with 6-9 and singleton in - sign-off, so here Opener should pass or correct because Spades = or > Hearts

Responder Opener
  pass         1
  1            2 <= shows 6 cards and 12-15 hcp
  2   <= 45+ with 6-9 hcp and singleton - sign-off, so here Opener should pass because Clubs > Hearts

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