awns&quot;, &quot;other player's knights&quot;, &quot;three positions ago was a repetition&quot; and &quot;seven moves until a 50-move draw&quot;. The inputs pass through a deep tower of convolutions before reaching two separate <em>heads</em> (see Figure 4). One head calculates <em>value</em>, a single number. The other calculates <em>policy</em>, a set of 8-by-8 planes representing probabilities for different moves. Attaching these two heads to the one body saves calculation time and helps <em>regularize<