All the matchpoints

It’s rare for 100% of the matchpoints to be at stake on any decision. Look what happened on this hand. In a robot duplicate I held AJ98 7 A73 KJ532 and opened 1C. It continued 1H by lho, X by partner, up to me. I think this is an obvious 2S bid. 1S is a nothing bid that could be on 3 trumps with no H stopper, so to me 2S shows only something like 14-16 support points, which I have easily. The field disagreed unanimously: 24 of 24 bid 1S! So, when North bid 4S, I was unknowingly in a top or bottom situation, looking at:

North: KQ54 QJT Q6 T764

South: AJ98 7 A73 KJ532

West cashed a heart and led the ST. I played SJ, S8 and he pitched a heart. I opted to overtake and lead a club (I must note I erred by leading the 4 rather than a higher spot, although this turned out not to matter. Never waste your smallest spot from the short hand!) RHO hopped CA to lead a heart; I correctly pitched a diamond and lefty won and played a 3^rd heart, RHO ruffing. Now a simple matter to overruff, pull trumps and guess clubs, playing LHO for Qx (which he held) since he would lead a stiff, for making 4 and all the matchpoints. Almost...

See, I use the keyboard input on bbo, which works fine; no typos for some time now. When following, you just hit the rank; when not, suit then rank. *But* if you just hit a rank, it assumes the last suit you played if possible. You see where this is going? By just hitting A, I “overruffed” with the DA instead of the SA! That was down 2, and exactly 0% of the matchpoints. You can see all the results at http://online.bridgebase.com/myhands/hands.php?traveller=2701-1262208601-558614&username=jlw77