[steve2005]

My link
i know dd it doesnt matter
but you think it could program it not to do something dumb like this

[johnu]

Good lead by GIB. Singleton leads are preferred against suit contracts.

[msheald]

I'm just an intermediate player, so I defer to those with more experience, but I would think that the lead of singleton King of trumps may give up a trick. Declarers will typically conclude that they have to finesse for it, which would give defenders a trick since playing for the drop of the king as a singleton King of trump would be a very unlikely card distribution and declarer would have a low board most of the time playing for such a drop. Leading the king eliminates such a problem for declarer.

Again, there may be another reason for defenders to lead a singleton King of Trumps, and I look forward to more experienced players chiming in. Best regards.

Mike

[smerriman]

If you hadn't yet realised, all of johnu's posts in this forum are sarcastic.

The lead is of course ridiculous for the reason you mentioned, but GIB's algorithm is based around double dummy analysis, so assumes the opponents will know it is singleton. It's a fundamental issue with GIB but isn't something that will ever be fixable.

[msheald]

Thanks!