Grant Acedrex

Not to be confused with Grand chess.
abcdefghijkl
12a12 black rookb12 black championc12 black unicornd12 black giraffee12 black bishopf12 black wizardg12 black kingh12 black bishopi12 black giraffej12 black unicornk12 black championl12 black rook12
11a11b11c11d11e11f11g11h11i11j11k11l1111
10a10b10c10d10e10f10g10h10i10j10k10l1010
9a9 black pawnb9 black pawnc9 black pawnd9 black pawne9 black pawnf9 black pawng9 black pawnh9 black pawni9 black pawnj9 black pawnk9 black pawnl9 black pawn9
8a8b8c8d8e8f8g8h8i8j8k8l88
7a7b7c7d7e7f7g7h7i7j7k7l77
6a6b6c6d6e6f6g6h6i6j6k6l66
5a5b5c5d5e5f5g5h5i5j5k5l55
4a4 white pawnb4 white pawnc4 white pawnd4 white pawne4 white pawnf4 white pawng4 white pawnh4 white pawni4 white pawnj4 white pawnk4 white pawnl4 white pawn4
3a3b3c3d3e3f3g3h3i3j3k3l33
2a2b2c2d2e2f2g2h2i2j2k2l22
1a1 white rookb1 white championc1 white unicornd1 white giraffee1 white bishopf1 white wizardg1 white kingh1 white bishopi1 white giraffej1 white unicornk1 white championl1 white rook1
abcdefghijkl
Grant Acedrex starting position. From left to right, back rank pieces are: rook, lion, unicornio, giraffe, crocodile, aanca, king, crocodile, giraffe, unicornio, lion, rook.

Grant Acedrex is a medieval chess variant dating back to the time of King Alfonso X of Castile. It appears in the Libro de los Juegos of 1283.