I gave a little time to see what's people reply... I hate to break the sad news to everybody who tried to guess the whole story. Indeed I opened 1D and X meaning penalty. partner left the double. 4HX+1 made. An expert said it's common in experts circles to double holding a strong balanced or semi balanced hand (more or less what I had) and partner should pull the double if he is unbalanced. According to him one should not double with something like XX AQTX XXXXX AK because one doesn't want the double could be pulled. I was wandering just how common is that method. (not on the actual hand in which partner bid was disciplined and systematic) for those who want the complete hand... I held Q 9XXX AQXX AKQX and partner held JX X KJXXX XXXXX and stood the double. (partner bid is 6-7 in our method and partner upgraded because 5-5) declarer held 6 hearts to the AKQJ and 5 spades with void in clubs and two small diamonds. dummy had 5 spades, doubleton heart, doubleton diamond and JXXX in clubs. We have 4 in either minor (after giving a spade, a heart and a club) they have 5 in either major. some players actually made 6S or 7S after a club lead. According to the traveling score it was common to double 4H with my hand.