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Knights tourmemory
1. KnightsTourMemory
Memorized Knight's Tour
The Knight's Tour is a classic challenge based on the game of Chess. The challenge is to
move a chess knight, using only the standard chess knight move, around an 8x8 chess
board so that each square is landed on once and only once, starting from any square
designated by an audience member.
A chess knight moves either 1 square horizontally and 2 squares vertically, or 2 squares
horizontally and 1 square vertically. From the knight's position (denoted with a N below),
he can move to any of the squares marked with an X (An underscore denotes an square to
which the knight cannot move).
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>_ >_ >_ >_ >_ >_ >_ >_
<#888888 <#FFFFFF <#888888 <#FFFFFF <#888888 <#FFFFFF <#888888 <#FFFFFF
>_ >_ >X >_ >X >_ >_ >_
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>_ >X >_ >_ >_ >X >_ >_
<#888888 <#FFFFFF <#888888 <#FFFFFF <#888888 <#FFFFFF <#888888 <#FFFFFF
>_ >_ >_ >N >_ >_ >_ >_
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>_ >X >_ >_ >_ >X >_ >_
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>_ >_ >X >_ >X >_ >_ >_
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>_ >_ >_ >_ >_ >_ >_ >_
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>_ >_ >_ >_ >_ >_ >_ >_
Coordinates
Each square will be given a set of coordinates, and a path that allows any one of the 64
squares to be a starting point, and covers all 64 squares, will be memorized. There are
two kinds of coordinates that can be used in this challenge, and the memorization method
will vary slightly with each kind.
Linear Coordinates
Linear coordinates simply designate each square with a number from 1 to 64. This
method is most effective when performing for an audience that isn't familiar with chess
(which will be most audiences).
3. When memorizing algebraic coordinates, the simplest method is to use the letter as the
initial sound, followed by the phonetic equivalent of the number. For example, A1 might
translate into ATE, B1 might translate into BAT, and so on.
To prevent confusion, it is a good idea to avoid words that you already have as pegs. If
you use the Major System 100, and you already use BAT as your peg for 91, you should
use BOAT as your peg for B1 instead.
The Path
There are many possible paths that cover all 64 squares and are re-entrant (the final
square is one knight's move away from the first square), thus allowing you to start from
any square. Here is the path that will be taught in this tutorial:
59 30 35 24 57 22 15 18
36 25 58 29 16 19 56 21
31 60 27 34 23 54 17 14
26 37 32 49 28 13 20 55
39 04 61 12 33 48 53 10
62 01 38 07 50 11 44 47
05 40 03 64 45 42 09 52
02 63 06 41 08 51 46 43
In linear coordinates, the list of spaces is as follows: 1, 18, 35, 41, 58, 52, 42, 57, 51, 34,
49, 59, 44, 61, 55, 40, 46, 36, 30, 24, 7, 13, 23, 8, 14, 31, 16, 6, 21, 4, 10, 25, 19, 29, 12,
2, 17, 27, 37, 20, 3, 9, 26, 43, 33, 50, 60, 54, 64, 47, 53, 63, 48, 38, 28, 45, 62, 56, 39, 22,
32, 15, 5, 11, and return to 1
In algebraic coordinates, the list of spaces is as follows: a8, b6, c4, a3, b1, d2, b3, a1, c2,
b4, a2, c1, d3, e1, g2, h4, f3, d4, f5, h6, g8, e7, g6, h8, f7, g5, h7, f8, e6, d8, b7, a5, c6,
e5, d7, b8, a6, c5, e4, d6, c8, a7, b5, c3, a4, b2, d1, f2, h1, g3, e2, g1, h3, f4, d5, e3, f1,
h2, g4, f6, h5, g7, e8, c7, and return to a8
Memorizing the Path
To memorize the path, you'll simply link each coordinate to the following coordinate in
the path list.
With the linear coordinates, you might link TIE (1) to DOVE (18), then DOVE (18) to
MULE (35), and so on, finishing with linking TOT (11) to TIE (1).
With the algebraic coordinates, you might link A VOW (a8) to BEACH (b6), then
BEACH (b6) to CAR (c4), and so on, finishing with linking CAKE (c7) to A VOW
(a8).
4. Performing the Knight's Tour
To perform the Knight's Tour, you only need a pencil and paper. Draw an 8x8 grid, and
fill in the coordinates (algebraic and linear). You can also carry around a portable chess
board, with each square marked. Remember that you'll also need some way to mark
squares that have already been landed upon.
To begin the performance, you may need to explain the nature of the challenge first.
Introduce the board, and explain how the knight moves, and that you have to hit each
square. You can also offer to look away or be blindfolded during the challenge.
To start the challenge itself, have your spectator choose a starting square.
From this point, simply recall your links, and have the audience member cross out the
squares as you call them, until you get to the final square. Don't forget the square on
which you started, so you don't overshoot the final square.
