Hello, I know martingale  is useless for long term for dice game  but   if you have a big bank and can support  1 serie of 20 loose, you will always win no ,?
The world record  for the roulette is one serie of  26 red , it will never happen again,the odd are just very low 
So if we   do martingale  with a bank that can support  20-25 loose, we will definitly make money