An old error

[thorvald]

I just hit an old error I have seen reported on BridgeWinners, and it might be reported here

 

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CThorvald%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C4SAJT84HA73DA7CT95%2CS9765HJ5DKQ6CAJ32%2CS3HKT642DJ9852CQ4%2CSKQ2HQ98DT43CK876%7Csv%7CN%7Cah%7CBoard%202%7Cmb%7CP%7Cmb%7C1S%7Can%7CMajor%20suit%20opening%20--%205%2B%20%21S%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C1N%7Can%7CForcing%20one%20notrump%20--%203-%20%21S%3B%206%2B%20HCP%3B%2012-%20total%20points%7Cmb%7CP%7Cmb%7C2C%7Can%7CNew%20suit%20--%203%2B%20%21C%3B%203-%20%21H%3B%205%2B%20%21S%3B%2011%2B%20HCP%3B%2012-18%20total%20points%7Cmb%7CP%7Cmb%7C2D%7Can%7C5%2B%20%21D%3B%202-%20%21S%3B%206-9%20HCP%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CD3%7Cpc%7CD7%7Cpc%7CDQ%7Cpc%7CD2%7Cpc%7CHJ%7Cpc%7CHK%7Cpc%7CH8%7Cpc%7CH3%7Cpc%7CD5%7Cpc%7CD4%7Cpc%7CDA%7Cpc%7CD6%7Cpc%7CCT%7Cpc%7CCA%7Cpc%7CC4%7Cpc%7CC8%7Cpc%7CH5%7Cpc%7CH2%7Cpc%7CH9%7Cpc%7CHA%7Cpc%7CH7%7Cpc%7CS7%7Cpc%7CH4%7Cpc%7CHQ%7Cpc%7CCK%7Cpc%7CC5%7Cpc%7CC2%7Cpc%7CCQ%7Cpc%7CC7%7Cpc%7CC9%7Cpc%7CCJ%7Cpc%7CD8%7Cpc%7CHT%7Cpc%7CC6%7Cpc%7CS4%7Cpc%7CDK%7Cpc%7CC3%7Cpc%7CD9%7Cpc%7CDT%7Cpc%7CS8%7Cpc%7CSK%7Cpc%7CSA%7Cpc%7CS9%7Cpc%7CS3%7Cmc%7C7%7C]399|300[/hv]

 

Now my opponent passed 1N that just made.

 

The rules for bidding 2♦ and 2♥ are exactly the same 5+ in the suit and 0-1♠, the 2 rules have same priority, and is independent of length, so even with 7♥ and 5♦ it will bid 2♦ - probably becuase the rules are evaluated ♣♦♥♠

 

 

Finally I had it figured out, but then I was hit by this deal

 

[hv=pc=n&&a=1n3cppdp&n=sa6432hkt632dtct2]199|300[/hv]

 

Now I think that most of us would Double or bid 4♣ at our first turn, and after the T/O double from partner we would bid 4♣ to ask partner for the better major, but now the Bot decides to bid 4♠, so here it seems ♠ is better than ♥ - I fon't get it

[smerriman]

The rules for bidding 2♦ and 2♥ are exactly the same 5+ in the suit and 0-1♠, the 2 rules have same priority, and is independent of length, so even with 7♥ and 5♦ it will bid 2♦ - probably becuase the rules are evaluated ♣♦♥♠

This isn't actually true; if North has 6 hearts, it's programmed to prefer the major no matter how many diamonds it has (and does bid 2♥ if you swap a small club with a heart in your hand above). The reason it always gets messed up when you start giving it even more extreme shapes like 7-5 is because many of its rules are HCP based and many total points based, and it can't compute that HCP is saying it's too weak to invite in a major, but total points is saying it's too strong to show a minimum in a major, resulting it in doing neither.

 

but now the Bot decides to bid 4♠, so here it seems ♠ is better than ♥ - I fon't get it

This one is pretty moot, since it simulates when deciding what major to pick. But I'm not sure what's to get - the basic robot is programmed to prefer spades rather than hearts when it's determining what its best fit is.