Alice and bob are playing a shooting game
Mr heater big buddy valve control assembly
Arcade Boss Games has an excellent selection of hand-picked arcade games and a loyal following of gamers who enjoy playing the very best games, competing for highscores and winning prizes at one of the most unique free online game arcades around.
Alice's choice is represented by the letter a, and Bob's choice by the letter b. The H function is a known cryptographic hash function. (Once the protocol is running, Bob checks the H (a) value and both Alice and Bob have learned the winner.) (Note that this game has a short playing time and should be played without long waiting times like chess.)