Besides being able to count to 80, there are a few other tactics and skills that can greatly improve your chances of winning.
http://mirosovak.edoras.cz/viewtopic.php?f=3&t=102352
http://www.prepody.ru/topic66729.html
http://www.prepody.ru/topic59344.html
https://debate.socialism.nl/forum/showthread.php?tid=174182
https://debate.socialism.nl/forum/showthread.php?tid=233261
https://talkingpoints.org/subx/showthread.php?tid=6758
http://forexam.ru/component/kunena/?func=view&catid=5&id=167232#167232
http://47.88.101.141/forum.php?mod=viewthread&tid=264307&extra=
http://horsecity.ru/phpBB3/viewtopic.php?f=22&t=240265
http://www.prepody.ru/topic57662.html
http://1.s.2.free.fr/viewtopic.php?f=18&t=259432
https://debate.socialism.nl/forum/showthread.php?tid=131656
http://oldsite.giessen46ers.de/fantalk/viewtopic.php?f=1&t=203939