X: According to the legend, chess was born when a surviving fighter told on figures how the lost battle went. I wonder how he was justified.
Y: This is elementary. The ancient army consisted of heavy and light infantry (heavy and heavy). Weights are slow armored. LPs are mobile, single-hit. The weights are going to fight with the weights of the enemy - their fight will decide the outcome of the battle. The LP winds forward and exhausts the enemy's weight. In chess, judging by the speed of the figures (with the same damage), LPs are moving figures. Ferguson is a horse. The weights are pedestrian.

y: In the initial chess position, the pedestrians stand in front of them, stepping the actions of the LP. Leave the white figures as they are and change the places of the pedestrians and the figures of the blacks - the blacks will win. Apparently, the soldier said: “Our commander-in-chief chose the worst order of combat. Our cavalry was still able to break forward, crushing its own infantry. But what could I do? The archery was hindered by the back of their fighters until the defeat of the army.