The only way SEN qualifies i'm pretty sure is if 100T and FURIA lose ALL of their games and SEN win against FURIA and all their other games. SEN qualifies 6th on H2H against 100T FURIA, but this means that other teams like EG, NRG need to get certain results as well. And even if this happens I'm pretty sure SEN have a chance to lose on round diff or map diff
i may be wrong but