Abraham ibn Ezra

“ And the kings stand by for battle,
And twixt these two is the fighting.
Bent on war the face of each is,
Ever moving or encamping,
Yet no swords are drawn in warfare,
For a war of thoughts their war is. ”

“ Line 40, "Horse" is the knight.
Line 44, "Wind" is the rook.
Although this poem bears evidence that the moves in chess have not changed, there are one or two variations of another kind worth noticing. The Indian chessmen have an Elephant to represent the Castle, or Rook, but it is clear that the author of this poem followed the Arabic designation, as he makes the Bishop the Elephant, or פיל‎, which the Arabs called "Al fil" (see Encycl. Brit. vol. 5, p. 599) . ”