In this respect, Artemis’s methodology was similar to that of American chess master Bobby Fischer, who was capable of computing every possible move an opponent could make so that he could counteract it. The only problem with this technique was that there were some scenarios that Artemis simply could not face, and these had to be shuffled to the end of his process, rendering it flawed.
And so he plotted, realizing that it was probably futile, as he did not know most of the constants in this equation, not to mention the variables.

The Last Guardian, Chapter 6