Hi everyone My first post and I've come for some help - no doubt I'll be playing lots of Bridge as well now that I'm registered. Was a most active player until I got married and then my children were born - some 18 years ago - but have now started playing the physical version again with a friend. Anyway, down to the problem. I was playing out a hand at a local club (duplicate session), accepting that I was about to go two off in 3NT - we were already one off losing the first five tricks. Almost everyone had bid it but the distribution / layout / opening lead meant that the contract was always doomed - apart from the lucky few who didn't get the [obvious] lead against them). Therefore, I wasn't fully concentrating on counting the cards as normal, rather just going through the motions in case something fortuitous happened (accidental squeeze, poor discards by defenders, etc., and not counting on a revoke, of course!). I was in hand with four cards to go, and on the fifth last card, my RHO discarded (Club) instead of following (Spade), and the LHO also showed out on this trick. Wow - I thought - my little 2S was now good (fourth from a holding of A,K,J,2) and as dummy had had two Spades - then if both opponents had had four / three distribution between them, then there only had had to be one discard at some point and the 2S was good in any event. Therefore, on the next trick instead of crossing to Dummy, taking three of the last four tricks, I led the 2S and of course, RHO won! I called the Director immediately after RHO produced the Spade, and the RHO showed the Director that he would then win all the remaining tricks bar one (RHO had one further Spade, two top Hearts, and then his remaining Club would be overtaken in Dummy). I stated that had I known that RHO had another Spade, I would have played the original way but chose to change my play solely on this new information received. What is the correct penalty in these circumstances? Thanks.