HB29 – Inverted minor raises / Jacoby ♠ K 3 Board 1 : Dealer North : Love all ♥ K 7 5 West North East South ♦ A J 8 7 6 1♦ Pass 3♦ ♣ A 8 2 All Pass ♠ Q 10 5 4 ♠ A J 6 2 ♦ ♦ ♥ A 10 9 2 ♥ Q J 8 3 3 is inverted, showing a good raise to 2 . North has no reason to ♦ Q 10 ♦ 5 2 bid on. ♣ K 10 7 ♣ 6 4 3 ♠ 9 8 7 ♥ 6 4 ♦ K 9 4 3 ♣ Q J 9 5 ♠ J 10 9 5 Board 2 : Dealer East : NS vulnerable ♥ A 10 9 2 West North East South ♦ Q 10 1♦ Pass ♣ K 10 9 1NT All Pass ♠ Q 8 7 ♠ K 3 ♥ Q 6 4 ♥ K 7 5 With isolated queens and a balanced hand West is not suitable for ♦ ♦ ♣ ♦ 9 5 4 3 ♦ A J 8 7 6 3 . Opposite 1 or 1 a 1NT response must be available for 6-9 ♣ Q 7 5 ♣ A 8 2 point hands. ♠ A 6 4 2 ♥ J 8 3 ♦ K 2 ♣ J 6 4 3 ♠ Q J 10 5 Board 3 : Dealer South : EW vulnerable ♥ 6 4 3 West North East South ♦ K 9 4 3 1♦ ♣ 9 8 Pass 1♠ 4♥ 4♠ ♠ 7 6 4 3 ♠ 9 Dbl All Pass ♥ 10 ♥ A K Q J 9 87 2 ♦ 10 2 ♦ 5 Compare the North hand here with the South hand in 1. The black ♣ A K J 7 6 4 ♣ Q 10 5 suits have been transposed. Now South has a 4-card major and he ♥ ♠ A K 8 2 must give priority to showing it. When East jumps to 4 South can ♠ ♥ 5 now bid the making 4 : if North had given an inverted minor raise ♦ ♦ ♦ A Q J 8 7 6 to 3 South would have faced the choice between bidding 5 or ♥ ♣ 3 2 passing. East/West can make 5 but is hard for them to judge. ♠ A 5 4 3 Board 4 : Dealer West : All vulnerable ♥ 9 7 6 3 2 West North East South ♦ 10 8 1♦ Pass 2♦ Pass ♣ A 10 2♠ Pass 2NT Pass ♠ Q J 10 7 ♠ 6 2 3♦ All Pass ♥ Q 5 ♥ K J 4 ♦ K Q 9 4 3 ♦ A J 6 5 2♦ shows at least a good raise to 3 ♦. It is forcing as far as 3 ♦. If ♣ K 7 ♣ Q 8 5 2 either partner bids beyond 3 ♦ the auction becomes game forcing. ♠ K 9 8 West can show where his values lie with 2 ♠, enabling East to bid ♥ A 10 8 2NT with the other suits stopped. Now West shows his minimum ♦ ♦ 7 2 opening with 3 , which East can pass. ♣ J 9 6 4 3 ♠ Q J 10 Board 5 : Dealer North : NS vulnerable ♥ A Q West North East South ♦ K Q 9 4 3 1♦ Pass 2♦ ♣ J 7 3 Pass 2NT Pass 3NT ♠ K 9 8 7 ♠ A 5 4 3 All Pass ♥ 10 8 5 ♥ 9 7 6 3 2 ♦ ♦ ♦ ♦ 7 2 ♦ 10 8 2 shows at least a good raise to 3 . It is forcing as far as 3 . If ♦ ♣ K 9 6 4 ♣ A 10 either partner bids beyond 3 the auction becomes game forcing. ♠ 6 2 Superficially 2NT shows no extra values because it doesn’t bypass ♦ ♥ K J 4 3 but logic dictates that if North is balanced he must have a hand too strong for a 1NT opening bid. Hence 2NT shows 15+ HCP and ♦ A J 6 5 is game forcing. South makes the obvious raise. ♣ Q 8 5 2 Board 6 : Dealer East : EW vulnerable ♠ K 10 9 4 West North East South ♥ 6 4 3 2 1♣ Pass ♦ A Q 6 5 3 2♣ Pass 2♥ Pass ♣ - 2♠ Pass 3♣ Pass ♠ A Q J ♠ 8 6 5 3♦ Pass 4♣ Pass ♥ A 7 5 ♥ K Q 9 5♣ All Pass ♦ 9 8 ♦ 2 ♣ ♣ K J 5 4 3 A Q 9 8 6 2 ♣ ♣ ♣ ♠ 2 shows at least a good raise to 3 . It is forcing as far as 3 . If 7 3 2 ♣ ♥ either partner bids beyond 3 the auction becomes game forcing. J 10 8 ♥ ♠ ♦ 2 and 2 show values in the suits bid, not necessarily 4-card K J 10 7 4 suits and these bids guarantee no extra values because the bidding ♣ 10 7 is below 3 ♣. 3 ♦ is fourth suit forcing and game forcing. ♠ Q 10 2 Board 7 : Dealer South : All vulnerable West North East South ♥ 4 1♣ ♦ A Q J 8 Pass 2♣ Pass 2♥ ♣ K J 5 4 3 Pass 3♦ Pass 3♠ ♠ A J 3 ♠ K 9 7 4 Pass 3NT All Pass ♥ J 8 6 2 ♥ A 10 7 5 3 ♦ ♦ 10 9 6 5 3 K 7 4 ♣ ♣ ♣ ♣ ♣ 2 shows at least a good raise to 3 . It is forcing as far as 3 . If 10 7 ♣ ♠ either partner bids beyond 3 the auction becomes game forcing. 8 6 5 ♥ ♥ 2 shows values in the suit bid, not necessarily a 4-card suit and K Q 9 this bid guarantees no extra values because the bidding is below ♦ 2 3♣. 3 ♦ is game forcing and shows diamond values. 3 ♠ is fourth ♣ A Q 9 8 6 2 suit forcing. Board 8 : Dealer West : Love all ♠ J 9 3 2 West North East South ♥ J 6 4 1♣ Pass 2♣ Pass ♦ 9 8 7 6 5 2♥ Pass 2♠ Pass ♣ 10 3♣ Pass 6♣ All Pass ♠ 8 6 5 ♠ A Q 10

♥ K Q 9 ♥ A 8 2♣ shows at least a good raise to 3 ♣. It is forcing as far as 3 ♣. If ♦ 2 ♦ A J 3 either partner bids beyond 3 ♣ the auction becomes game forcing. ♣ A Q 9 8 6 2 ♣ K J 5 4 3 2♥ and 2 ♠ show values in the suits bid, not necessarily a 4-card ♠ K 7 4 suit and these bids guarantee no extra values because the bidding ♥ 10 7 5 3 2 is below 3 ♣. 3 ♣ shows a minimum opening bid. East now gives up ♦ K Q 10 4 on a grand slam but bids 6 ♣ on general values. ♣ 7 ♠ A Q J 6 5 Board 9 : Dealer North : EW vulnerable ♥ 9 6 West North East South ♦ K 6 5 1♠ Pass 3♠ ♣ A J 2 All Pass ♠ 9 ♠ 10 8 7 ♠ ♠ ♥ A Q 10 2 ♥ K J 8 7 Playing Jacoby raises 3 shows a sound 4-card raise to 2 . North ♦ 10 9 3 2 ♦ A 4 has no reason to bid on. ♣ K 10 8 4 ♣ Q 9 5 3 ♠ K 4 3 2 ♥ 5 4 3 ♦ Q J 8 7 ♣ 7 6 ♠ J Board 10 : Dealer East : All vulnerable ♥ Q 10 5 2 West North East South ♦ 10 9 3 2 1♠ Pass ♣ K 10 8 4 2NT Pass 3NT Pass ♠ K 4 3 2 ♠ A Q 9 6 5 4♠ All Pass ♥ A 4 3 ♥ J 6 ♦ Q J 8 7 ♦ K 6 5 2NT is Jacoby, showing 4-card support and either the values for a ♠ ♠ ♣ 7 6 ♣ A J 2 sound raise to 3 or at least a good raise to 5 . 3NT accepts the ♠ ♠ 10 8 7 game try if West has the raise to 3 and denies a side suit ♠ ♠ ♥ K 9 8 7 singleton or void. 4 shows 2NT was based on the raise to 3 . ♦ A 4 ♣ Q 9 5 3 ♠ K 4 3 2 Board 11 : Dealer South : Love all ♥ A 4 3 West North East South ♦ Q J 8 7 1♠ ♣ 7 6 Pass 2NT Pass 3♠ ♠ 10 8 7 ♠ A All Pass ♥ K 9 8 7 ♥ Q 10 5 2 ♦ A 4 ♦ 10 9 3 2 2NT is Jacoby, showing 4-card support and either the values for a ♠ ♠ ♠ ♣ Q 9 5 3 ♣ K 10 8 4 sound raise to 3 or at least a good raise to 5 . 3 declines the ♠ ♠ Q J 9 6 5 game try if North has the raise to 3 . ♥ J 6 ♦ K 6 5 ♣ A J 2 ♠ 10 8 Board 12 : Dealer West : NS vulnerable ♥ K 9 8 West North East South ♦ 5 4 2 1♠ Pass 2NT Pass ♣ A J 9 4 3 4♠ All Pass ♠ A K 9 7 6 5 ♠ Q J 3 2 ♥ 7 6 ♥ A 4 3 2NT is Jacoby, showing 4-card support and either the values for a ♠ ♠ ♠ ♦ A 10 6 ♦ Q J 8 7 sound raise to 3 or at least a good raise to 5 . 4 accepts the ♠ ♣ 5 2 ♣ 7 6 game try if West has the raise to 3 and denies a side suit ♠ 4 singleton or void but is weaker than 3NT. The implication is that the ♥ Q J 10 5 2 raise is made on shape rather than points. In practice West has only 6 losers: with a 10-card fit there should be no loser in spades ♦ K 9 3 even if ♠Q is missing. ♣ K Q 10 8 ♠ A Q 9 6 5 Board 13 : Dealer North : All vulnerable ♥ 6 West North East South ♦ K 7 6 5 1♠ Pass 2NT ♣ A J 2 Pass 3♥ Pass 3♠ ♠ J ♠ 10 8 7 Pass 4♠ All Pass ♥ Q 10 5 2 ♥ K 9 8 7 ♦ 10 9 3 2 ♦ A 4 2NT is Jacoby, showing 4-card support and either the values for a ♠ ♠ ♥ ♣ K 10 8 4 ♣ Q 9 5 3 sound raise to 3 or at least a good raise to 5 . 3 accepts the ♠ ♠ K 4 3 2 game try if South has the raise to 3 and shows a singleton heart. ♠ ♠ ♠ ♥ A J 4 3 3 shows the raise to 3 . 4 says North is not interested in slam. ♦ Q J 8 ♣ 7 6 ♠ A 7 Board 14 : Dealer East : Love all ♥ K 10 5 4 West North East South ♦ 10 9 3 2 1♠ Pass ♣ 10 8 4 2NT Pass 3♠ Pass ♠ K 4 3 2 ♠ Q J 9 6 5 4♠ All Pass ♥ A Q ♥ J 6 ♦ Q J 8 7 ♦ K 6 5 2NT is Jacoby, showing 4-card support and either the values for a ♠ ♠ ♠ ♣ K Q 6 ♣ A J 2 sound raise to 3 or at least a good raise to 5 . 3 declines the ♠ ♠ ♠ 10 8 game try if West has the raise to 3 . 4 is a sign off, but the ♠ ♥ 9 8 7 3 2 obvious implication is that West had the raise to 5 and would ♦ A 4 have been interested in a slam if East had not been minimum. ♣ 9 7 5 3 Board 15 : Dealer South : NS vulnerable ♠ K 4 3 2 West North East South ♠ ♥ A Q 1 Pass 2NT Pass 3NT ♦ Q J 8 7 Pass 4♥ Pass 4NT ♣ K Q 6 Pass 5♦ Pass 6♠ ♠ 10 8 ♠ J 7 All Pass ♥ J 8 7 3 2 ♥ 10 9 5 4 ♦ ♦ A 4 10 9 3 2 2NT is Jacoby, showing 4-card support and either the values for a ♣ ♣ J 7 5 3 10 8 4 sound raise to 3 ♠ or at least a good raise to 5 ♠. 3NT accepts the ♠ A Q 9 6 5 game try if North has the raise to 3 ♠ and denies a side suit ♥ K 6 singleton or void. With just a raise to 3 ♠ North would have bid 4 ♠ ♦ K 6 5 next, hence 4 ♥ shows a good raise to 5 ♠ and is a cue bid. South is ♣ A 9 2 easily worth a slam now and just checks there are not two aces missing. Board 16 : Dealer West : EW vulnerable ♠ 10 8 7 West North East South ♥ K 9 8 7 1♠ Pass 2NT Pass ♦ 5 4 3♥ Pass 3♠ Pass ♣ K 9 5 3 4♣ Pass 4NT Pass ♠ A Q 9 6 5 ♠ K 4 3 2 5♠ Pass 6♠ All Pass ♥ 6 ♥ A J 4 3 ♦ A K 7 6 ♦ Q J 8 2NT is Jacoby, showing 4-card support and either the values for a ♣ A Q 2 ♣ 7 6 sound raise to 3 ♠ or at least a good raise to 5 ♠. 3♥ accepts the ♠ J game try if West has the raise to 3 ♠ and shows a singleton heart. ♥ Q 10 5 2 3♠ shows the raise to 3 ♠. West now goes on a slam hunt with a 4 ♣ ♦ 10 9 3 2 cue bid and East should co-operate because he has very little ♣ J 10 8 4 wasted in hearts: ♥A J 4 3 is a good holding opposite partner’s singleton with only ♥J wasted.