Eight chess knights, four white and
four black ones, are placed on the 7-like chessboard as
shown in the Start diagram at left. Now, performing just
normal knight’s moves from cell to cell of the
chessboard, exchange the white and black knights as
shown in the Goal diagram at right. Knights can leap to
vacant cells only.
Can you exchange the knights in exactly twelve moves,
counting a consecutive series of leaps of a knight as
one move? Hint. To achieve this goal you should perform
moves by knights of different colors alternately.
To move a knight simply click it first; then click a
chosen free cell which the Knight should move to. Use
"Undo" and "Redo" for the respective backward and
forward moves of knights on the board in accordance with
your solution. Once you solve the puzzle, or have some
particular sequence of moves, you can use "Undo" and
"Redo" to check all your moves. The Labels button can be
helpful to check and note down your solution.
*) This puzzle is part of the
seven-puzzle collection,
Seven Puzzles for G4G7, developed specially for the Gift
Exchange at the Seventh Gathering for Gardner (G4G7),
Atlanta, Georgia, USA, March 16-19, 2006. It is
published in the G4G7 Exchange Book, published by
Gathering 4 Gardner, Inc. in 2007.
-----
Several new chess puzzles can be found in my book,
The New Puzzle Classics: Ingenious Twists on Timeless
Favorites,
published by
Sterling Publishing Co., Inc.
in 2005:
-- Chapter 7: Tricky Moves, pages 204-209.
Also, a nice collection of chess puzzles is presented at
Puzzles.COM
in its
Puzzle Playground section.
Last
Updated: December 3, 2009
Posted: October 26, 2007
