Help
boosterbbh, on 2014-November-05, 04:52, said:
Forgot about west's last club. Contract may be defeated then
Yes, the bot confirms that the contract is down on a diamond lead.
How many spades are you bidding? A bidding problem followed by some flashy play from partner.
#21
- Group: Advanced Members
- Posts: 10,611
- Joined: 2009-September-15
- Gender:Female
- Location:London
Posted 2014-November-05, 06:51
Yes, the bot confirms that the contract is down on a diamond lead.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones -- Albert Einstein
#22
- 5-level belongs to me
-
- Group: Advanced Members
- Posts: 9,128
- Joined: 2004-August-30
- Gender:Male
- Location:Glasgow Scotland
- Interests:Poems Computers
Posted 2014-November-05, 12:57
boosterbbh, on 2014-November-05, 03:22, said:
With an end play.
After seeing west has all the spades I take the lead with my 9.
Trick 2: leading a club and ruff.
Trick 3: low diamond to ace.
Trick 4: another club.
Trick 5: low diamond and ruff.
Trick 6: another club.
Trick 7: k of diamond dropping the last club.
Round 8 (losing the trick): playing diamond. If west ruffs then I make all 3 last trumps. Therefore he gives the trick to his partner. If he throws the q of heart he drops a winner, and also has to come back with either a trump or a club, both selling a trick. Therefore he discards the club. Of course I drop a low heart.
9: if east leads a heart west wins 2 hearts and sells the trump trick. If east plays a club it is more difficult. South must then ruff high. West can either discard the q heart or a low trump. If he discards the q of heart west may only take another heart and another spade (because of the end play). If he drops a trump then he takes 2 heart tricks and must sell the last 2 trump tricks. Note that if south doesn't ruff high on the club lead of this round the contract is doomed
After seeing west has all the spades I take the lead with my 9.
Trick 2: leading a club and ruff.
Trick 3: low diamond to ace.
Trick 4: another club.
Trick 5: low diamond and ruff.
Trick 6: another club.
Trick 7: k of diamond dropping the last club.
Round 8 (losing the trick): playing diamond. If west ruffs then I make all 3 last trumps. Therefore he gives the trick to his partner. If he throws the q of heart he drops a winner, and also has to come back with either a trump or a club, both selling a trick. Therefore he discards the club. Of course I drop a low heart.
9: if east leads a heart west wins 2 hearts and sells the trump trick. If east plays a club it is more difficult. South must then ruff high. West can either discard the q heart or a low trump. If he discards the q of heart west may only take another heart and another spade (because of the end play). If he drops a trump then he takes 2 heart tricks and must sell the last 2 trump tricks. Note that if south doesn't ruff high on the club lead of this round the contract is doomed
Simplified diagram --
Again only a ♦ lead defeats 4♠ at double-dummy.
#23
- Group: Advanced Members
- Posts: 3,240
- Joined: 2012-June-25
Posted 2014-November-05, 13:13
If West decides to lead a trump he should lead an honour.
#24
- 5-level belongs to me
-
- Group: Advanced Members
- Posts: 9,128
- Joined: 2004-August-30
- Gender:Male
- Location:Glasgow Scotland
- Interests:Poems Computers
Posted 2014-November-05, 13:22
PhilKing, on 2014-November-05, 13:13, said:
If West decides to lead a trump he should lead an honour.
Boosterbbh's line, in 4♠ on a low ♠ lead, can be defeated: after winning ♦Q, RHO can lead a ♥, allowing LHO to win ♥AQ, with a trump trick to come.
GIB shows that a winning line, on a low ♠ lead, is
♠9, ♣ ruff, ♦A, ♣ ruff, ♦K chucking ♣, ♦ ruff, ♣ ruff, ♥ duck.