A grand-scale Shatranj said to have been played during the reign of Timur (Tamerlane) in the 14th century. On a 10×11 board, the army includes the Shah (king), Vizir, General (Ferz), Giraffe (a compound leaper-slider), Picket, Knight, Rook, Elephant, Camel, and War Engine. Historically, there were eleven distinct pawn types, each promoting to its own corresponding piece on the far rank.
Simplification: since sources disagree on the exact 11-way pawn-promotion mapping, this version simplifies it — every pawn promotes to a General (Ferz), except the pawn on the king's file, which promotes to a "Prince" (moves like a king, but isn't royal). The board's corner "citadel" squares are omitted. Check and checkmate aren't enforced — capturing the king directly ends the game.