У вашего броузера проблема в совместимости с HTML5
The horseshoe base was getting very frustrating to attack, many times relying completely on chance, so I found a new way to attack them. This strategy works for the majority of the bases I've seen and is fairly easy to use. It brought me up to 2000 trophies as a BH3, where I was often getting matched against BH4. This strategy did win me a few matches against BH4 too, but obviously that's way more difficult. Enjoy!
BH4 attack strategy: https://www.youtube.com/watch?v=WQQdMNyWfxk
Music:
Egmont Overture by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200069
Artist: http://incompetech.com/