These are sometimes referred to as Eliminator Hockey pools as well. Entrants pick one team each weekend of the NHL regular season with the intention of the selection winning. If the team selected wins, the entry survives to the following week. If the team selected loses, the entry is eliminated from the pool. If all remaining teams lose during a week, they all move on to the next week. The final surviving entry is the winner, unless there are multiple teams alive after the final week of the season. Teams may only be selected one time for the duration of the pool.
Strikes/Lives - Allow entrants more than one 'loss' or 'strike' prior to them being eliminated.
Start Week - Want to start a 2nd chance survivor pool? Start a pool with the first pick some time after the first weekend of the season.