Promotion in Shogi
Promotion (Naru) is a unique Shogi rule where a piece is flipped over to transform into a more powerful version upon entering or leaving the enemy territory (the back three rows).
Along with dropping captured pieces, this is the hallmark of Japanese Shogi not found in Western Chess, offering dynamic tactical shifts.
Used in situations like 'Promoting a Pawn into Tokin' or 'Choosing whether to promote'.
What unique Shogi rule allows you to flip a piece over to upgrade its performance upon entering or leaving the back three rows?