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Invite or Bash? Bundesliga 2015, Match 1

#41 User is offline   Mbodell 

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Posted 2015-January-31, 04:32

Alright, some more hands:

View PostFluffy, on 2015-January-26, 15:30, said:

Everything you said is right on most hands, however on this hand, were we have two or three 4-3 fits it favours a lot declarer, and in my opinion even more.

Anyway the point I wanted to make from the start of this hand is that on this kind of 3NT contract I'd rather hold QJxx than Kxxx, I wonder if others agree on this.


I simmed AT75 QJ84 K5 752 instead of the original AT75 K842 K5 752. So the only change is K842 => QJ84. A number of people liked forcing because of the AKK nature, but Fluffy thought QJxx was better than Kxxx. Banzai points would agree with QJxx worth 5 to the 4 for Kxxx. Results:


Quote

There were an average of 8.35872 tricks available in nt
In general, blasting instead of inviting wins you 0.22545.
In general, inviting instead of blasting wins you -0.22545.
=================================================
When we stay low we would have made game 43684 times (43.684%)
When we stay low we would make 8 exactly 42309 times (42.309000000000005%)
When we stay low we would make 7 or fewer exactly 14007 times (14.007%)


Double dummy agrees that QJxy is slightly better than Kxy2 for a suit.

View PostZelandakh, on 2015-January-29, 08:08, said:

Could I make another request of you please Mbodell. Could you run the same sim with hands of A752 K842 K5 J75 and A752 K842 K5 T75. That is, moving the minor honour to be unsupported by a higher one. Cheers mate. :)


So two hands asked for here. First for the T in clubs, not spades, we simulate A752 K842 K5 T75. Results:

Quote

There were an average of 8.15626 tricks available in nt
In general, blasting instead of inviting wins you -0.90265.
In general, inviting instead of blasting wins you 0.90265.
=================================================
When we stay low we would have made game 32006 times (32.006%)
When we stay low we would make 8 exactly 48771 times (48.771%)
When we stay low we would make 7 or fewer exactly 19223 times (19.223000000000003%)


So the T in the clubs quite a bit worse than the T in spades. In fact the T in clubs is worse than the T in diamonds and worse than the 9 in spades!

What about the J of clubs? I also did A752 K842 K5 J75 with results:

Quote

There were an average of 8.51464 tricks available in nt
In general, blasting instead of inviting wins you 0.66784.
In general, inviting instead of blasting wins you -0.66784.
=================================================
When we stay low we would have made game 49020 times (49.02%)
When we stay low we would make 8 exactly 41792 times (41.792%)
When we stay low we would make 7 or fewer exactly 9188 times (9.188%)


We've added about 1.5 IMP to the expected score, close to the 1.7 IMP we were adding for the spade T to spade J. It is better to have the club J than the spade T, but nowhere near as good as the spade J. We are also adding the same sort of 0.36 tricks or so when going from T to J.

View Postkuhchung, on 2015-January-29, 14:15, said:

Could you also get me a beer while you're at it Bodell?


W has 1 spade, East has 2 clubs, both players follow to 3 rounds of hearts, and no one unguards a black suit or throws the 13th heart.

7

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