Pocket Knight Chess

By Ed Friedlander, 2001.

Overview

Pocket Knight Chess is standard chess with one addition: each player begins the game holding a spare Knight in their “pocket.” Once in the game, a player may spend their move to drop this Knight onto any empty square instead of moving a piece on the board.

Setup

Standard FIDE starting position. Each player also holds one Knight in reserve (not on the board).

FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
(Plus one White Knight and one Black Knight in pocket)

Rules

All standard FIDE rules apply, with the following addition:

The Pocket Drop

• Once per game, on their turn, a player may drop their pocket Knight onto any empty square on the board instead of making a normal move.
• The square must be empty.
• A drop counts as a full move.
• Each player may only do this once in the game.
• A player who drops their Knight may not do so again, even if the Knight is later captured.

All Other Rules

Castling, en passant, promotion, and all other FIDE rules apply normally.

Strategy Notes

The pocket Knight provides a powerful surprise weapon: it can be dropped on any empty square, making it useful for outpost manoeuvres, sudden forks, or reinforcing a collapsing defense. Because the drop can only happen once, timing is crucial — spending it too early may waste the element of surprise; spending it too late may be too little.

Source: chessvariants.com/play/erf/PocketKt.html