East deal and Pass
South open a limited opening of 1 ♣ showing 4+♥ 8-14 H C P
West make a Strong Over call of 2 ♦ showing 6+ ♦ 12-15 H C P
North make a negative Double 4+♠ &4+ ♣
East pass
south bid 3♣ showing 4+♣ by not biding 2 ♠ he say he dont have 4 Spade
West pass
North is unsure if they have game but make a forcing bid of 3♦
East pass
south is unsure what the 3 diamond is think it is forcing and bid 3 ♥ to show more then minimum and the Ace of heart
West pass
north leap to 5 ♣
south make all 13 trick
any 1 have some idea about that?
michel