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- P E N T O M I N O E S
-
- The game of Pentominoes consists of 12 pieces, where each piece
- consists of 5 squares (hence the name pento-mino). The pieces
- are unique in shape and resemble letters of the alphabet so they
- are named according to this scheme:
-
-
- TTT U U V W X Y ZZ FF IIIII LLLL PP NN
- T UUU V WW XXX YYYY Z FF L PP NNN
- T VVV WW X ZZ F P
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-
- Together, all the pieces total 60 squares. The most amazing
- thing about these pentominoes is that they can be fitted together
- to form the following rectangles:
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- 6 X 10, 5 X 12, 4 X 15 and even 3 X 20!
-
- If you feel challenged, you may make pentominoes from cardboard
- by carefully marking off reqularly spaced qrid lines and tracing
- the various pieces, then cutting them. You might like to try
- building just even one 6X10 rectangle!
-
- Another popular shape that the pentominoes can fill is a an 8 X 8
- square with a 2 X 2 hole in the middle. You can get several
- symmetrical patterns from this board.
-
- The triplication problem may be stated this way: Take a
- pentomino, say "F". Without using the F-pentomino itself, it is
- possible to use 9 of the remaining pentominoes to build a shape
- which is 3 times as high and 3 times as wide as the selected
- pentomino.
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- If you add a unit thickness to the 12 shapes, then you have a set
- of solid pentominoes. And surprise, surprise! - they may be used
- to build 3-dimensional bricks of these dimensions:
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- 3 x 4 x 5 and 2 x 5 x 6 and 2 x 3 x 10
-
- But I leave those problems for you! (Actually, I managed to come
- up with a solid pentomino program but it took more than 2 hours
- to even arrive at 1 solution to the 3 x 4 x 5 so I gave up!)
-
- I hope you enjoy these programs.
-
- Manny Juan
- 61 Oakmont Drive
- Daly City, CA 94015