thorvald

[hv=d=s&v=0&b=11&a=1sp2c(Nat, GF)p3n(18-19 bal)p4h(Nat, 5-card)p4s(Cue)P4n(RKC)p5d(0 or 3)p5s(Queen%3F)p5n(Yes%2C%20no%20king%20to%20show)p7hppp]133|300[/hv]

Then I assume it is an issue in the simulation, or could it just be one of these places, where the bot is better than human? https://bridgewinner...m-2-g4nfc0jonr/

There are in principle 2 different versions of 2/1 GF - On BridgeWinners called SHAPE and STRENGTH. https://bridgewinner...stem-summaries/ Now GIB is playing the STRENGTH version, and that is OK. This means that after 1Ma-2X the Bot will rebid the major to show minimum. But now look at this hand [hv=pc=n&n=saj954h3d85ckq764]133|100[/hv] Here GIB will open 1♠, that is OK with me. Now when partner responds 2♦/♥, the Bot will rebid 2♠. But what happens if next hand bids, so the bidding goes [hv=d=n&v=n&b=5&a=1sp2d2h?]133|100[/hv] Now the Bot bids 3♣, in principle switching from STRENGTH to SHAPE. This is not showing extra And what about [hv=d=n&v=n&b=5&a=1sp2h3d?]133|100[/hv] The bot insist on showing ♣ and now bids 4♣ on this bad hand On other bids (including Double), the bot will pass Interesting if this is standard for 2/1 GF

Yes, but 5341 is not the most likely distribution of opener. Try with 5233/5332 or even 5224 In 4♠, then hand is practically only worth 3 tricks (and the same in 3N), as East is short in ♦, so no ♦.ruf

[hv=pc=n&n=st3hak54da5c76543&d=s&v=n&b=5&a=1s2d3cp3np4sppp]133|200[/hv] First of all, this looks like a negative double, but I wonder what deals the bot found, where 4♠ is better than 3N. 3N= 5+♠, 11-15 HCP, stop in ♦

2♣ is Cappelletti showing a single-suited hand

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CHuman%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C3SJ94HAKQ76DAKTCT4%2CS82H5DJ982CKQJ965%2CSKT65H43DQ3CA8732%2CSAQ73HJT982D7654C%7Csv%7CN%7Cah%7CBoard%205%7Cmb%7CP%7Cmb%7CP%7Cmb%7C1H%7Can%7CMajor%20suit%20opening%20--%205%2B%20%21H%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C1S%7Can%7COne%20over%20one%20--%204%2B%20%21S%3B%2011-%20HCP%3B%206-12%20total%20points%7Cmb%7CP%7Cmb%7C2N%7Can%7CJump%20in%20notrump%20--%202-3%20%21C%3B%202-3%20%21D%3B%205%20%21H%3B%202-3%20%21S%3B%2017-19%20HCP%3B%2022-%20total%20points%3B%20partial%20stop%20in%20%21C%3B%20partial%20stop%20in%20%21D%7Cmb%7CP%7Cmb%7C3N%7Can%7C4%2B%20%21S%3B%208-11%20HCP%3B%2012-%20total%20points%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CC9%7Cpc%7CC2%7Cpc%7CS3%7Cpc%7CCT%7Cpc%7CS9%7Cpc%7CS2%7Cpc%7CS5%7Cpc%7CSQ%7Cpc%7CD4%7Cpc%7CDT%7Cpc%7CD9%7Cpc%7CDQ%7Cpc%7CS6%7Cpc%7CS7%7Cpc%7CSJ%7Cpc%7CS8%7Cpc%7CS4%7Cpc%7CC5%7Cpc%7CST%7Cpc%7CSA%7Cpc%7CD7%7Cpc%7CDA%7Cpc%7CD2%7Cpc%7CD3%7Cpc%7CDK%7Cpc%7CDJ%7Cpc%7CC3%7Cpc%7CD6%7Cpc%7CHA%7Cpc%7CH5%7Cpc%7CH3%7Cpc%7CH2%7Cpc%7CHK%7Cpc%7CC6%7Cpc%7CH4%7Cpc%7CHJ%7Cpc%7CHQ%7Cpc%7CD8%7Cpc%7CC7%7Cpc%7CH8%7Cmc%7C10%7C]399|300[/hv] I think the rules for leading fourth highest should be updated. But also interesting in the replay, that East can bid over 1N, but not over 1♥ [hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CHuman%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C3SJ94HAKQ76DAKTCT4%2CS82H5DJ982CKQJ965%2CSKT65H43DQ3CA8732%2CSAQ73HJT982D7654C%7Csv%7CN%7Cah%7CBoard%205%7Cmb%7CP%7Cmb%7CP%7Cmb%7C1N%7Can%7Cnotrump%20opener.%20Could%20have%205M.%20--%202-5%20%21C%3B%202-5%20%21D%3B%202-5%20%21H%3B%202-5%20%21S%3B%2015-17%20HCP%3B%2018-%20total%20points%7Cmb%7C2C%21%7Can%7CCappelletti%20-%20single%20suited%20--%2014-%20HCP%3B%2010%2B%20total%20points%7Cmb%7CD%7Can%7CStayman%20--%2011-%20HCP%3B%2012-%20total%20points%7Cmb%7CP%7Cmb%7C2H%7Can%7C2-5%20%21C%3B%202-5%20%21D%3B%204-5%20%21H%3B%202-4%20%21S%3B%2015-17%20HCP%3B%2018-%20total%20points%7Cmb%7CP%7Cmb%7C2S%7Can%7COther%20major%20--%203-%20%21H%3B%204%20%21S%3B%209%20HCP%7Cmb%7CP%7Cmb%7C3H%7Can%7C2-5%20%21C%3B%202-5%20%21D%3B%205-%20%21H%3B%202-4%20%21S%3B%2015-17%20HCP%3B%20rebiddable%20%21H%3B%2018-%20total%20points%7Cmb%7CP%7Cmb%7C3N%7Can%7C3-%20%21H%3B%204%20%21S%3B%209%20HCP%3B%2010%2B%20total%20points%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CCK%7Cpc%7CC2%7Cpc%7CS3%7Cpc%7CC4%7Cpc%7CCQ%7Cpc%7CCA%7Cpc%7CD7%7Cpc%7CCT%7Cpc%7CH3%7Cpc%7CH2%7Cpc%7CHA%7Cpc%7CH5%7Cpc%7CHK%7Cpc%7CC6%7Cpc%7CH4%7Cpc%7CHJ%7Cpc%7CSJ%7Cpc%7CS8%7Cpc%7CS5%7Cpc%7CSQ%7Cpc%7CHT%7Cpc%7CHQ%7Cpc%7CC5%7Cpc%7CC3%7Cpc%7CS9%7Cpc%7CS2%7Cpc%7CS6%7Cpc%7CSA%7Cpc%7CH9%7Cpc%7CH6%7Cpc%7CD9%7Cpc%7CC7%7Cpc%7CH8%7Cpc%7CH7%7Cpc%7CD8%7Cpc%7CC8%7Cpc%7CD6%7Cpc%7CDT%7Cpc%7CD2%7Cpc%7CDQ%7Cmc%7C8%7C]399|300[/hv]

The deal is publish on the webpage with Robot challenges by BBO, so no privacy. When playing on BBO you accept that all your deals are public

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CHuman%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C3SK532HAK4DACAKT52%2CSAT8HQ765DKJ954CQ%2CSQJ964HT932DT6C63%2CS7HJ8DQ8732CJ9874%7Csv%7CE%7Cah%7CBoard%209%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%7CD%7Can%7CTakeout%20double%20--%202-%20%21C%3B%203-5%20%21D%3B%203-4%20%21H%3B%203-4%20%21S%3B%2012%2B%20total%20points%7Cmb%7CP%7Cmb%7C1D%7Can%7C4%2B%20%21D%3B%209-%20total%20points%7Cmb%7CD%7Can%7C3%2B%20%21C%3B%202%2B%20%21D%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7C3D%7Can%7C2-%20%21C%3B%205%20%21D%3B%203-4%20%21H%3B%203-4%20%21S%3B%2012%2B%20total%20points%7Cmb%7CP%7Cmb%7CP%7Cmb%7CD%7Can%7C3%2B%20%21C%3B%202%2B%20%21D%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C3H%7Can%7C4%2B%20%21H%3B%208-%20total%20points%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CS7%7Cpc%7CS2%7Cpc%7CST%7Cpc%7CSQ%7Cpc%7CH2%7Cpc%7CH8%7Cpc%7CHA%7Cpc%7CH6%7Cpc%7CHK%7Cpc%7CH7%7Cpc%7CH3%7Cpc%7CHJ%7Cpc%7CH4%7Cpc%7CHQ%7Cpc%7CH9%7Cpc%7CC4%7Cpc%7CD9%7Cpc%7CD6%7Cpc%7CD2%7Cpc%7CDA%7Cpc%7CSK%7Cpc%7CSA%7Cpc%7CS4%7Cpc%7CC9%7Cpc%7CDK%7Cpc%7CDT%7Cpc%7CD3%7Cpc%7CC2%7Cpc%7CD5%7Cpc%7CHT%7Cpc%7CD7%7Cpc%7CC5%7Cpc%7CSJ%7Cpc%7CDQ%7Cpc%7CS3%7Cpc%7CS8%7Cpc%7CS9%7Cpc%7CC7%7Cpc%7CS5%7Cpc%7CH5%7Cpc%7CDJ%7Cpc%7CC3%7Cpc%7CD8%7Cpc%7CCT%7Cpc%7CD4%7Cpc%7CC6%7Cpc%7CCJ%7Cpc%7CCK%7Cpc%7CCQ%7Cpc%7CS6%7Cpc%7CC8%7Cpc%7CCA%7C]399|300[/hv] First south has an opening problem, and 2N could be right After opening 1♣ West had a normal T/O Double. After Souths T/O double it is interesting that West can bid 3♦ just promising an opening hand and 5♦, East had shown nothing, and EW vulnerable. Now after Souths second T/O double (this should show extra just as the previous double) it is interesting, that North bids the 4-card major Result 2 down, where 4♠ is lay down (And lesson learned should be to bid 1♠ instead of the first T/O Double)

I really see no problem in that, but perhaps there is something I am misunderstanding

[hv=pc=n&n=s6hq7642dq5caq972&d=n&v=n&b=5&a=pp1sp2hp2np3cp3np4h]133|200[/hv] 4♥=6+♥, 4+♣, 11- HCP, 11-12 total points With a better ♥-suit, it might be right to play 4♥, even knowing partner has a double. But I think for once the explanation is right, so the bid is wrong. Only 2 down

Some times, when looking at the full deal some bid seems obvious, so you get this hand without knowing if it is a bot hand or a human hand [hv=pc=n&s=sthkj5dt94ckt6543&d=w&v=b&b=10&a=p1dp1np2sp?]133|200[/hv] And I rotated it to make south the bidder

Well, it was not the brightest declarer play by GIB, noticed how it plays ♦ before knocking out ♣A. At trick 8 it is seen that South had a single ♣. So with 2 cards the bot "knows" that south had doubles on either ♠642 ♥KJT82 ♦KT92 ♣A or ♠K642 ♥KJ82 ♦KT92 ♣A I am not sure what is most probable, but 3♦ (promising 15+ total points) make the last my favorite But the main issue is taking a finesse for an overtrick

For some strange reason the bot found a bid after the double. [hv=url=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|~~v3fakebot,~~v3fakebot,Thorvald,~~v3fakebot|md|3SAKT3HAK86DJT64C3,S9752HJT3DQ32CK84,SQJ84H972D98CJT92,S6HQ54DAK75CAQ765|sv|e|rh||ah|Board%209|mb|P|mb|1C|an|Minor%20suit%20opening%20--%203+%20!C;%2011-21%20HCP;%2012-22%20total%20points|mb|D|an|Takeout%20double%20--%202-%20!C;%203-5%20!D;%203-4%20!H;%203-4%20!S;%2012+%20total%20points|mb|P|mb|1S|an|4+%20!S;%209-%20total%20points|mb|2D|an|4+%20!C;%204+%20!D;%2021-%20HCP;%203-card%20!C;%2015-22%20total%20points|mb|2S|an|2-%20!C;%203-5%20!D;%203-4%20!H;%204%20!S;%2012-17%20total%20points|mb|P|mb|P|mb|D|an|4+%20!C;%204+%20!D;%205-%20!H;%205-%20!S;%2021-%20HCP;%2019-22%20total%20points|mb|R|an|2%20!C;%203-5%20!D;%203-4%20!H;%204%20!S;%2017+%20HCP;%2017-%20total%20points|mb|3H|an|4+%20!H;%205-%20total%20points|mb|P|mb|P|mb|D|an|2%20!C;%203-5%20!D;%203-4%20!H;%204%20!S;%2017+%20HCP;%2017-%20total%20points|mb|P|mb|3S|an|4+%20!S;%207%20total%20points|mb|P|mb|P|mb|P|pc|DK|pc|D4|pc|D2|pc|D8|pc|S6|pc|S3|pc|S2|pc|S8|pc|D9|pc|DA|pc|D6|pc|D3|pc|D7|pc|DT|pc|DQ|pc|S4|pc|CJ|pc|CQ|pc|C3|pc|C4|pc|D5|pc|DJ|pc|S9|pc|SJ|pc|H2|pc|H5|pc|HA|pc|H3|pc|HK|pc|HJ|pc|H7|pc|H4|pc|H6|pc|HT|pc|H9|pc|HQ|pc|C7|pc|ST|pc|C8|pc|C2|pc|H8|pc|S7|pc|SQ|pc|C5|pc|C9|pc|C6|pc|SK|pc|CK|pc|SA|pc|S5|pc|CT|pc|CA|]399|300[/hv] So I got my 140 instead of 5-800. Also note West introducing a 3-card suit after partner has shown 9 cards in minor

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7Czsano%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C4SK642HKJ82DKT92CA%2CST3HA43DAQ8CJ9762%2CSJ8HT975DJ753CT85%2CSAQ975HQ6D64CKQ43%7Csv%7CN%7Cah%7CBoard%202%7Cmb%7C1S%7Can%7CMajor%20suit%20opening%20--%205%2B%20%21S%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CD%7Can%7CTakeout%20double%20--%203-5%20%21C%3B%203-5%20%21D%3B%203-4%20%21H%3B%202-%20%21S%3B%2012%2B%20total%20points%7Cmb%7CR%7Can%7C2-%20%21S%3B%2010%2B%20HCP%3B%20opponents%20cannot%20play%20undoubled%20below%202N%7Cmb%7C2D%7Can%7CLength%20--%204%2B%20%21D%7Cmb%7C3C%7Can%7C4%2B%20%21C%3B%205%2B%20%21S%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7C3D%7Can%7C3-5%20%21C%3B%204-5%20%21D%3B%203-4%20%21H%3B%202-%20%21S%3B%2015%2B%20total%20points%7Cmb%7CD%7Can%7C2-%20%21S%3B%2012%2B%20HCP%3B%2013%2B%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C3S%7Can%7C4%2B%20%21C%3B%205%2B%20%21S%3B%2011-21%20HCP%3B%2012-22%20total%20points%3B%20forcing%7Cmb%7CP%7Cmb%7C3N%7Can%7C4-%20%21H%3B%202-%20%21S%3B%2014-21%20HCP%3B%20likely%20stop%20in%20%21C%3B%20stop%20in%20%21D%3B%20stop%20in%20%21H%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CD3%7Cpc%7CD6%7Cpc%7CDK%7Cpc%7CDA%7Cpc%7CS3%7Cpc%7CS8%7Cpc%7CS9%7Cpc%7CS2%7Cpc%7CD4%7Cpc%7CD9%7Cpc%7CDQ%7Cpc%7CD5%7Cpc%7CC7%7Cpc%7CC5%7Cpc%7CCK%7Cpc%7CCA%7Cpc%7CDT%7Cpc%7CD8%7Cpc%7CDJ%7Cpc%7CS7%7Cpc%7CD7%7Cpc%7CC3%7Cpc%7CD2%7Cpc%7CH4%7Cpc%7CC8%7Cpc%7CC4%7Cpc%7CS4%7Cpc%7CC9%7Cpc%7CC6%7Cpc%7CCT%7Cpc%7CCQ%7Cpc%7CH2%7Cpc%7CH6%7Cpc%7CHJ%7Cpc%7CHA%7Cpc%7CH7%7Cpc%7CCJ%7Cpc%7CH5%7Cpc%7CS5%7Cpc%7CS6%7Cpc%7CC2%7Cpc%7CH9%7Cpc%7CHQ%7Cpc%7CH8%7Cpc%7CST%7Cpc%7CSJ%7Cpc%7CSQ%7Cpc%7CSK%7Cpc%7CHK%7Cpc%7CH3%7Cpc%7CHT%7Cpc%7CSA%7C]399|300[/hv] We have often seen how the bot takes a finesse, but the later play for the drop. Here 9 tricks was safe, but the bot finessed in the two-card ending and went down

[hv=url=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|~~v3fakebot,~~v3fakebot,Thorvald,~~v3fakebot|md|1SKJ9HKQ74DAKJ86C4,ST62HT6DQT4CKQT98,SA87HA52D9752C532,SQ543HJ983D3CAJ76|sv|b|rh||ah|Board%207|mb|1D|an|Minor%20suit%20opening%20--%203+%20!D;%2011-21%20HCP;%2012-22%20total%20points|mb|P|mb|1N|an|2-5%20!C;%202-4%20!D;%202-3%20!H;%202-3%20!S;%206-10%20HCP;%207+%20total%20points|mb|P|mb|3N|an|3+%20!D;%205-%20!H;%205-%20!S;%2019-21%20HCP;%2022-%20total%20points|mb|P|mb|P|mb|P|pc|HJ|pc|HQ|pc|H6|pc|H2|pc|DA|pc|D4|pc|D2|pc|D3|pc|DK|pc|DT|pc|D5|pc|S5|pc|H4|pc|HT|pc|HA|pc|H3|pc|D9|pc|S3|pc|DJ|pc|DQ|pc|CT|pc|C2|pc|C7|pc|C4|pc|C8|pc|C3|pc|C6|pc|H7|pc|C9|pc|C5|pc|CJ|pc|S9|pc|CA|pc|SJ|pc|CK|pc|S7|pc|S4|pc|SK|pc|S6|pc|S8|mc|8|]399|300[/hv] Notice the ♣-position after trick 7. Still the bot managed to block the suit

[hv=url=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|Thorvald,~~v3fakebot,~~v3fakebot,~~v3fakebot|md|3SKQT9HAK5DA32CQ43,S742HT94DKJT987CA,S6HQ8763DQ54C8652,SAJ853HJ2D6CKJT97|sv|n|rh||ah|Board%205|mb|P|mb|P|mb|1C|an|Minor%20suit%20opening%20--%203+%20!C;%2011-21%20HCP;%2012-22%20total%20points|mb|2D|an|Aggressive%20weak%20jump%20overcall%20--%206+%20!D;%204-9%20HCP|mb|P|mb|P|mb|D|an|3-7%20!C;%202-%20!D;%203+%20!H;%203+%20!S;%2011-21%20HCP;%2012-22%20total%20points|mb|P|mb|3C|an|4+%20!C;%2011-%20HCP;%2012-%20total%20points|mb|P|mb|P|mb|P|pc|CA|pc|C2|pc|C7|pc|C3|pc|S2|pc|S6|pc|SA|pc|S9|pc|CK|pc|C4|pc|H4|pc|C5|pc|CJ|pc|CQ|pc|HT|pc|C6|pc|HA|pc|H9|pc|H3|pc|H2|pc|HK|pc|DJ|pc|H6|pc|HJ|pc|H5|pc|D7|pc|HQ|pc|C9|pc|CT|pc|D2|pc|D8|pc|C8|pc|D6|pc|DA|pc|DT|pc|D4|pc|SK|pc|S7|pc|H7|pc|S8|pc|D3|pc|DK|pc|D5|pc|S5|pc|S4|pc|H8|pc|S3|pc|ST|pc|SQ|pc|D9|pc|DQ|pc|SJ|]399|300[/hv] Yet another bug in the bidding database

[hv=pc=n&w=skqt54h4d9763caqj&e=sjhj63dak52ck8654&d=s&v=e&b=3&a=1h1s2hdp3hp3sp4sppp]266|200[/hv] Gib playing with GIB bid to 4♠ on the 5-1 fit, North opened with ♦T to the Ace, ♠J was taken with ♠A in south, who shifted to ♣3 to ♣Q, Now 3 more ♠ South dropping a ♥ on the last Leaving [hv=pc=n&w=s4h4d976caj&e=shjdk2ck654&d=s&v=e&b=3]266|133[/hv] There are now 6 safe tricks by unblocking ♣, something we learn the beginners the should always look for. For some reason I can't figure out, GIB played a ♦, and went down as ♣ were 4-1. I can't find any distribution, where GIB could win 11 tricks. Even with a small set of samples in the simulation I would expect ♣ to be 4-1 of some of the samples.

Every time I think now I have figured out how to bid decently with GIB, then GIB finds new ways to astonish me. You get these 4 boards from my last 8 board challenge, and should try to guess GIB's bid. Getting more than 1 right and you are better in understanding GIB than me [hv=pc=n&n=sjhakj83d87632c84&d=w&v=0&b=8&a=ppp1sp2h3c3dp?]133|200[/hv] [hv=pc=n&n=skj75432ht86djcq6&d=e&v=e&b=1&a=p1n3d?]133|200[/hv] [hv=pc=n&n=s62hjt943dqj5cqt4&d=n&v=n&b=5&a=pp1sp1np2hp?]133|200[/hv] [hv=pc=n&n=sk7632hakq86d3ct2&d=n&v=0&b=1&a=1sp2cp2hp3cp?]133|200[/hv] How many did you get right? How many of the bids would you agree?

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CThorvald%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C2SAQ9HA4DAQJT5C983%2CS65HQ985DK642CT72%2CSJ83HKJ76D3CAKJ64%2CSKT742HT32D987CQ5%7Csv%7C0%7Cah%7CBoard%208%7Cmb%7CP%7Cmb%7C1C%7Can%7CMinor%20suit%20opening%20--%203%2B%20%21C%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C1D%7Can%7COne%20over%20one%20--%204%2B%20%21D%3B%206%2B%20total%20points%7Cmb%7CP%7Cmb%7C1H%7Can%7C3%2B%20%21C%3B%204%2B%20%21H%3B%2011%2B%20HCP%3B%2012-18%20total%20points%7Cmb%7CP%7Cmb%7C1S%21%7Can%7CFourth%20suit%20forcing%20--%204%2B%20%21D%3B%203-%20%21S%3B%2012%2B%20HCP%3B%2013%2B%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C2D%7Can%7C3%2B%20%21C%3B%203%2B%20%21D%3B%204%2B%20%21H%3B%2011%2B%20HCP%3B%2012-18%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C3D%7Can%7C5%2B%20%21D%3B%203-%20%21S%3B%2012%2B%20HCP%3B%2013%2B%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C3S%7Can%7C3%2B%20%21C%3B%203%2B%20%21D%3B%204%2B%20%21H%3B%203%2B%20%21S%3B%2011%2B%20HCP%3B%2012-18%20total%20points%3B%20forcing%7Cmb%7CP%7Cmb%7C3N%7Can%7C5%2B%20%21D%3B%204-%20%21H%3B%203-%20%21S%3B%2014-21%20HCP%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CS6%7Cpc%7CS3%7Cpc%7CST%7Cpc%7CSQ%7Cpc%7CC3%7Cpc%7CC2%7Cpc%7CCK%7Cpc%7CC5%7Cpc%7CD3%7Cpc%7CD7%7Cpc%7CDT%7Cpc%7CDK%7Cpc%7CS5%7Cpc%7CS8%7Cpc%7CSK%7Cpc%7CSA%7Cpc%7CC9%7Cpc%7CC7%7Cpc%7CCJ%7Cpc%7CCQ%7Cpc%7CS7%7Cpc%7CS9%7Cpc%7CD2%7Cpc%7CSJ%7Cpc%7CCA%7Cpc%7CD9%7Cpc%7CC8%7Cpc%7CCT%7Cpc%7CC6%7Cpc%7CS4%7Cpc%7CD5%7Cpc%7CD6%7Cmc%7C11%7C]399|300[/hv] 1♠ is 4. suit GF, so bidding 2♣ seems obvious

What about trying with a new account?

From a Free Robot Duplicate (IMP) [hv=pc=n&e=saqj8hq9653djt97c&d=e&v=0&b=1&a=p1sd2s?]133|200[/hv] The Bot in east now bid 3♦, and that seems to be an error in the bidding database. [hv=lin=pn|Thorvald,~~M9181,~~M9179,~~M9180|st||md|4S3569KHTKD56QAC3J,STH28JAD238C456QA,S247H47D4KC2789TK,|rh||ah|Board 2|sv|n|mb|p|mb|1S!|an|Major suit opening -- 5+ !S; 11-21 HCP; 12-22 total points|mb|d|an|Takeout double -- 3-5 !C; 3-5 !D; 3-4 !H; 2- !S; 12+ total points |mb|2S|an|Free raise -- 3+ !S; 6-10 total points |mb|3D|an|Free bid; new suit -- 4+ !D; 6-10 total points |mb|p|mb|p|mb|p|pg||pc|S3|pc|ST|pc|S7|pc|SQ|pg||pc|H3|pc|HT|pc|HJ|pc|H7|pg||pc|D3|pc|DK|pc|D7|pc|D5|pg||pc|D4|pc|DJ|pc|DQ|pc|D2|pg||pc|S5|pc|C4|pc|S4|pc|S8|pg||pc|H5|pc|HK|pc|HA|pc|H4|pg||pc|D8|pc|CT|pc|D9|pc|DA|pg||pc|CJ|pc|C5|pc|CK|pc|DT|pg||pc|H6|pc|S6|pc|H8|pc|C8|pg||pc|CA|pc|C9|pc|SJ|pc|C3|pg||pc|H2|pc|C7|pc|HQ|pc|D6|pg||pc|SK|pc|CQ|pc|S2|pc|SA|pg||pc|H9|pc|S9|pc|C6|pc|C2|pg||]399|300[/hv] I was tempted in South to make a penalty double, but decided to pass, and the contract made after the obvious ♠-lead But some players (about 25% of the field) decided to double in my position: [hv=lin=pn|Human,~~M9202,~~M9200,~~M9201|st||md|4S3569KHTKD56QAC3J,STH28JAD238C456QA,S247H47D4KC2789TK,|rh||ah|Board 2|sv|n|mb|p|mb|1S|an|Major suit opening -- 5+ !S; 11-21 HCP; 12-22 total points|mb|d|an|Takeout double -- 3-5 !C; 3-5 !D; 3-4 !H; 2- !S; 12+ total points |mb|2S|an|Free raise -- 3+ !S; 6-10 total points |mb|3D|an|Free bid; new suit -- 4+ !D; 6-10 total points |mb|d|an|2+ !D; 5+ !S; 11-21 HCP; 12-22 total points|mb|p|mb|p|mb|4H|an|4+ !D; 5+ !H; 6-10 total points |mb|p|mb|p|mb|p|pg||pc|S5|pc|ST|pc|S2|pc|SQ|pg||pc|SA|pc|S3|pc|D2|pc|S7|pg||pc|H3|pc|HT|pc|HJ|pc|H4|pg||pc|D8|pc|DK|pc|D9|pc|D6|pg||pc|D4|pc|DJ|pc|DQ|pc|D3|pg||pc|C3|pc|C6|pc|CK|pc|H6|pg||pc|HQ|pc|HK|pc|HA|pc|H7|pg||pc|C5|pc|C2|pc|H9|pc|CJ|pg||pc|S8|pc|S9|pc|H2|pc|S4|pg||pc|C4|pc|C7|pc|H5|pc|D5|pg||pc|DT|pc|DA|pc|H8|pc|C9|pg||pc|CA|pc|CT|pc|D7|pc|S6|pg||pc|CQ|pc|C8|pc|SJ|pc|SK|pg|| ]399|300[/hv] Note the explanation is 4+♦, but 5+♥ :-) The same fate happened to the players competing in 3♠

Well the question is only 5 years old :-) And we are many that think BBO should enable something like Full Disclosure

[hv=pc=n&s=sht6dkqj64cakqjt7&d=n&v=b&b=13&a=2s3h?]133|200[/hv] What to bid now? 4N is for aces with ♠, so leaving 4♣, 4♦ or Pass If you bid 4Mi it will show a rebiddable suit and 22+ points You could bid 4♦ and then 5♣ over the expected 4♠, and I have checked that is natural. But looking at the bids available for the bot it will only bid 4♠ with single in my minor, so bidding 4♣, and then 5♦ over 4♠ is natural. Now the problem is that if you bid 4Mi, the bot will ask for aces in 4N, and you response is now 5♠, committing you to 6mi I decided to bid 5♣ (after bidding 4♣ the first time) hoping the bot only had one ace. But the bot continue with 5♦ asking for trump Queen. So the bot must have 2 aces and odds are it is ♠ and ♦, so now it is just guessing the number of ♥s in the bots hand. If one ♥ 6 is cold, if 2 you could pass 5♦. So what is your guess?

[hv=pc=n&e=s7hkq432dat82caj3&d=e&v=b&b=10&a=1hp4dp?]133|200[/hv] 4♦ is a splinter showing 4+♥ and 13-16 total points. The Bot in east used blackwood and after getting one ace bid 6♥. Perhaps a bit optimistic, but not unreasonable. I will get back to the play, so lets just look what happened at another table - this board was played 15 times, and 4 of the south players bid 2♦. Over 2♦ West still did bid 4♦, this time being a splinter with 4+♥ and 13+ total points. The only difference is that West now is unlimited, Now the East bot just bid 4♥ and was left there to play. Interesting that opposite a limited hand the Bot goes for slam Now back to the play [hv=pc=n&w=sakq86hjt86djcqt4&e=s7hkq432dat82caj3]266|100[/hv] How would you play it on a ♠-lead? Against 6♥ south lead a trump 7 times, and a ♠ 4 times After a ♠-lead the bot found a way to go down, that looks interesting Looking at the 2 hands a plan could be to throw 2♣ on the ♠, and the go for crossruff The other plan is to draw trump and finesse in ♣. After a trump-lead the bot went for the second option and made, but after a ♠-lead somethiing strange happened [hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CSouth%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C4S42HA95DKQ543C862%2CSAKQ86HJT86DJCQT4%2CSJT953H7D976CK975%2CS7HKQ432DAT82CAJ3%7Csv%7CB%7Cah%7CBoard%2010%7Cmb%7C1H%7Can%7CMajor%20suit%20opening%20--%205%2B%20%21H%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C4D%21%7Can%7CSplinter%20--%201-%20%21D%3B%204%2B%20%21H%3B%2013-16%20total%20points%7Cmb%7CP%7Cmb%7C4N%7Can%7CBlackwood%20%28H%29%20--%205%2B%20%21H%3B%2021-%20HCP%3B%2019-22%20total%20points%7Cmb%7CP%7Cmb%7C5D%7Can%7COne%20or%20four%20key%20cards%20--%201-%20%21D%3B%204%2B%20%21H%3B%2013-16%20total%20points%7Cmb%7CP%7Cmb%7C6H%7Can%7C5%2B%20%21H%3B%2021-%20HCP%3B%2019-22%20total%20points%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CS4%7Cpc%7CSA%7Cpc%7CSJ%7Cpc%7CS7%7Cpc%7CDJ%7Cpc%7CD6%7Cpc%7CDA%7Cpc%7CD4%7Cpc%7CCA%7Cpc%7CC6%7Cpc%7CC4%7Cpc%7CC7%7Cpc%7CD2%7Cpc%7CD3%7Cpc%7CH6%7Cpc%7CD7%7Cpc%7CSK%7Cpc%7CS5%7Cpc%7CC3%7Cpc%7CS2%7Cpc%7CHJ%7Cpc%7CH7%7Cpc%7CH4%7Cpc%7CHA%7Cpc%7CC2%7Cpc%7CCT%7Cpc%7CCK%7Cpc%7CCJ%7Cpc%7CC5%7Cpc%7CD8%7Cpc%7CC8%7Cpc%7CCQ%7Cpc%7CH8%7Cpc%7CS3%7Cpc%7CHK%7Cpc%7CH5%7Cpc%7CH2%7Cpc%7CH9%7Cpc%7CHT%7Cpc%7CD9%7Cpc%7CSQ%7Cpc%7CST%7Cpc%7CDT%7Cpc%7CD5%7Cpc%7CS8%7Cpc%7CS9%7Cpc%7CHQ%7Cpc%7CDQ%7Cpc%7CH3%7Cpc%7CDK%7Cpc%7CS6%7Cpc%7CC9%7C]399|300[/hv] At trick 3 the Bot cashed ♣A probably following the crossruff-line, but then at trick 6 it started drawing trump, really with no chance of winning the contract. Playing ♠Q at trick 6 going down would have been understandable - and looking double dummy - the only way to go only 1 down on the actual layout