Teaching Elo to Play with Friends

At some point this year, I let my laptop run flat-out for almost two weeks just to answer one question: how much of a four-player board game is &ldquo;skill&rdquo; and how much is &ldquo;luck&rdquo;? That sounds excessive, but there was a catch: before I could even start those simulations, I had to fix a basic problem. Elo – the rating system we&rsquo;ve been happily using so far – only really…