Slip Rook
The Slip Rook is a piece that can move as a Rook, but only an odd number of squares. It alternatively can be thought of as a bent rider, consisting of a Wazir-step, and then a Dabbabah-rider. The piece is sometimes also referred to as a Panda, probably referring to its colorswitching move.
Historical Notes
This piece was first mentioned under the name of :aterPanda by David Parlett, who described it as a rook that only can move to squares of the opposite color it stands on. It was used in a few problems in The Problemist in the 1970´s. Later, George Jelliss gave it the name of Slip Rook, and it was under this name that it was used by Jörg Knappen for his experimental CwDA-army the Seeping Switchers. The original name of Panda was used in some games by Charles Gilman.
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Author: Kelvin Voskuijl and Fergus Duniho. Inventor: David Parlett.
Last revised by Kelvin Voskuijl.
Web page created: 2025-04-12. Web page last updated: 2025-04-19