I suspect there is a lot of unexplored potential for inventing interesting games in which both ends of the columns are active (as is the case in this game). Hydra is a game with some similarities to Pile-On/Beeswax that I invented in 1999, or possibly earlier. See the rules here. Thanks to Michael Keller for suggesting the name.

With perfect play, this game can be won nearly 98% of the time (but it will likely be less in practice).

Hydra's Revenge

The more difficult 5-column "Hydra's Revenge" variation drops the win rate to less than 1-in-4.

Hydra Results
10,000 deals each

Any comments are welcome, please send to:

Last modified February 2, 2022

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