Grandmaster Anatoly Karpov. FIDE world
champion 1993-1999; peak rating 2780
Observe that Topalov beats Anand, Anand beats Karpov, and Karpov beats
Topalov (where “beats” means “wins more games than”).
The games thus resemble a noisy version of “rock paper scissors”.
The likelihood function does not record who played white; see
karpov_kasparov_anand for such a dataset.
These objects can be generated by running script
inst/rock_paper_scissors.Rmd, which includes some further
discussion and technical documentation and creates file chess.rda
which resides in the data/ directory.