Robots running rampant

[pilowsky]

This bidding sequence just appeared in today's 'Just Declare'.

What do North and South have in 1) HCP and 2) Spades.

[hv=d=s&v=e&b=3&a=pp1c1hp2h3d3h3s(3-!C%3B%203-!D%3B%204%2B!S%2C%207-12%20total%20points)p4s(5%2B!C%3B%204%2B!S%3B%2017-21%20HCP)dppp]133|100[/hv]

[pescetom]

South is mysterious, perhaps 6 spades and about 3 HCP.

North is clearer, should have 17+ HCP with 6 clubs, 5 diamonds and 4 spades.

[smerriman]

I trust the 3♦ bid so North will be somewhat strong with 5-6 in the minors. 3♠ is clearly a simmed bid that has nothing to do with its description; must be at most 4 HCP for the initial pass, but I wouldn't put it past having just 4 spades, since it knows "book-only partner" will never raise and so it's generally just a forcing bid that's guaranteed to end up playing in a minor. Of course, it's not playing with "book-only partner" and 4♠ is another simmed bid, probably with 2 spades.

[pilowsky]

Of course, it's not playing with "book-only partner" and 4♠ is another simmed bid, probably with 2 spades.

 

Not quite sure what you mean by "book-only partner"; It's "just declare" so all the bidding is GIB.

I like the 15 card in North hypothesis.

[smerriman]

Not quite sure what you mean by "book-only partner"; It's "just declare" so all the bidding is GIB.

Whenever GIB is simulating what to bid, it assumes all further bids will be made exactly as the non-simulating database predicts (ie what basic robots would do). So it will think that there is a 0% chance its partner raises its bid to 4♠, even though its partner can simulate too and does bid 4♠.

[pilowsky]

So here's the full disaster - I managed 69% for only going -4.

[hv=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=ZZ%7C%7Cpn%7Cpilowsky%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C1ST76HT63D6532CAJ3%2CS9532HA97DQT74C64%2CSQJ4H5DAKJ8CKT985%2CSAK8HKQJ842D9CQ72%7Csv%7CE%7Cah%7CBoard%203%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7C1c%7Can%7CMinor%20suit%20opening%20--%203%2B%20%21C%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7C1h%7Can%7COne-level%20overcall%20--%205%2B%20%21H%3B%208-17%20HCP%3B%209-19%20total%20points%7Cmb%7Cp%7Cmb%7C2h%7Can%7C3%2B%20%21H%3B%206-10%20total%20points%7Cmb%7C3d%7Can%7C5%2B%20%21C%3B%2021-%20HCP%3B%203-card%20%21C%3B%20rebiddable%20%21D%3B%2018-22%20total%20points%7Cmb%7C3h%7Can%7C5%2B%20%21H%3B%2017-%20HCP%3B%2012-19%20total%20points%7Cmb%7C3s%7Can%7C3-%20%21C%3B%203-%20%21D%3B%204%2B%20%21S%3B%2011-%20HCP%3B%207-12%20total%20points%7Cmb%7Cp%7Cmb%7C4s%7Can%7C5%2B%20%21C%3B%204%2B%20%21S%3B%2017-21%20HCP%3B%203-card%20%21C%3B%20rebiddable%20%21D%3B%2018-22%20total%20points%7Cmb%7CD%7Can%7C5%2B%20%21H%3B%2017%20HCP%3B%2019%20total%20points%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7Cp%7Cpc%7CC6%7Cpc%7CC8%7Cpc%7CCQ%7Cpc%7CCA%7Cpc%7CD2%7Cpc%7CD7%7Cpc%7CDJ%7Cpc%7CD9%7Cpc%7CS4%7Cpc%7CSK%7Cpc%7CS6%7Cpc%7CS5%7Cpc%7CHK%7Cpc%7CH3%7Cpc%7CH7%7Cpc%7CH5%7Cpc%7CC7%7Cpc%7CCJ%7Cpc%7CC4%7Cpc%7CC5%7Cpc%7CS7%7Cpc%7CS2%7Cpc%7CSJ%7Cpc%7CSA%7Cpc%7CH8%7Cpc%7CH6%7Cpc%7CH9%7Cpc%7CSQ%7Cpc%7CDA%7Cpc%7CS8%7Cpc%7CD3%7Cpc%7CD4%7Cpc%7CC2%7Cpc%7CC3%7Cpc%7CS9%7Cpc%7CC9%7Cpc%7CDQ%7Cpc%7CDK%7Cpc%7CH4%7Cpc%7CD5%7Cpc%7CCK%7Cpc%7CH2%7Cpc%7CD6%7Cpc%7CS3%7Cpc%7CDT%7Cpc%7CD8%7Cpc%7CHQ%7Cpc%7CST%7Cpc%7CHT%7Cpc%7CHA%7Cpc%7CCT%7Cpc%7CHJ%7C]400|300|[/hv]