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A Good New-Fashioned Programming Throwdown

We just concluded our most challenging developer arena yet, the one-month Criss-Cross tournament. In this post, I recap the challenge, crown the champions, showcase the winning solutions, and tease you with our next multiplayer level.

In Criss-Cross, humans and ogres compete to build paths across a chasm by bidding on bridge tiles. Unlike the all-out war of our last tournament, Greed, Criss-Cross was not based in combat. However, there was plenty of turmoil to be found in the cold efficiency with which players outbid one another. You just need that one tile–but your opponent knows it. They’ve modeled your bidding strategy, and now they’re going to outbid you by a single coin!

Each match is best-three-out-of-five, and we used Bayesian Battle to calculate player skill rankings after running an exhaustive 65,000 matches on a 32-core c3.8xlarge machine. Here are the results.

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