Two or more consecutive moves of a piece, the sole purpose of which is to go to a square, from where this piece does not disturb the solution.
A more formal definition of the hideaway maneuver: A piece X doing a maneuver from square A to square B could, instead, hypothetically have been removed from the board and the solution would remain successful. The length of the maneuver must be at least 2 moves.
Additional restrictions and permissions:
1) If X hypothetically stayed on square A instead of doing the maneuver, it would disturb the solution.
2) The final and intermediate squares of the maneuver must differ from A.
3) At least one move of the maneuver must not be the only legal move available to X.
4) The moves of the maneuver do not necessarily follow in succession.
5) In the initial position of the problem, X does not necessarily stand on square A.
See also: Hideaway.
Die Schwalbe, 1993
Foldeak, Walter Arpad
Christmas Card, 1950
Sahovski vjesnik, 1951
Süddeutscher Rundfunk, 1960
Die Schwalbe, 1981
Magyar Sakkvilág TT, 1950