Jack 6.0 Computer Bridge Software (PC-DVD) Over 80 Conventions More tournaments, bidding contests and many more deals for the built in virtual JackBridge Club. A new tournament scoring method: instant matchpoints. Join a huge pair tournaments and instantly see how you are doing. Exhanced playing strength. Besides adjusting the playing strength you can now adjust Jacks bidding aggressiveness in detail. Jack himself is not afraid to overbid once in while and if that is something you hate in your partnership you can tone him down! Jack 6 is now usable on "notebook" computers (laptops without a CD drive) and works without a problem under Windows 8.