rvg

Yes, I can reproduce this consistently - when dds is called the first time it returns a zero whenever second hand has a singleton

I am trying to use the "dds" command in Thomas Andrews' dealer program (http://bridge.thomasoandrews.com/deal/commands.html#ddscmd ) in order to compute the number of tricks declarer (north) can make in a Spade contract. The full hand is : [hv=s=sak654h52dAK52cqj&n=sJ9832hTdj3cak732&w=sQhaj98763dq94cT8]400|300[/hv] I am trying to figure out how many tricks declarer can make on the lead of the Ace of Heart from West's hand thus : source format/none set diagram { {J9832 T J3 AK732} {T7 KQ4 T876 9654} {AK654 52 AK52 QJ} {Q AJ98763 Q94 T8} } set tricks [dds -leader west -diagram $diagram -trick AH south spades] puts "tricks on AH lead are $tricks (expected 12)" set tricks [dds -leader west -diagram $diagram -trick AH south spades] puts "tricks on AH lead are $tricks (expected 12)" The strange behavior is that the first invocation of the dds returns the value of 0 whereas the second (identical) call to dds returns 12 (the correct answer). I was wondering if someone knew what I was doing wrong here. u1347224@penguin:~/git/gdealer/deal319/linux$ ./deal -i repro.tcl tricks on AH lead are 0 (expected 12) tricks on AH lead are 12 (expected 12)