SHIKAKU HELP

All prime numbers are contained in a 1x rectangle.  Prime numbers are 2, 3, 5, 7, 11, 13, 17 etc. 

Odd numbers cannot be in a 2x rectangle (Example: 9 = 1x9 or 3x3). 

Anytime you have a number beside another number, you know that they are contained in different areas, therefore you know that a line goes between them.  This is shown with the 3 and 4 in the sample puzzle below.

SHIKAKU #2 - INTERMEDIATE LEVEL

SHIKAKU RULES

On the Pencil Puzzle help page you would find this helpful hint...
All prime numbers are contained in a 1x rectangle.  Prime numbers are 2, 3, 5, 7, 11, 13, 17 etc. 
Odd numbers cannot be in a 2x rectangle (Example: 9 = 1x9 or 3x3)

SHIKAKU #2 - INTERMEDIATE LEVEL

SOLUTION

SHIKAKU RULES

SHIKAKU RULES ~
Divide the grid up into rectangles.  Numbers within the grid give you the AREA of the rectangle to be drawn around it.  Each rectangle has a number in it and every square in the grid will be used.  Rectangles cannot overlap.  AREA = LENGTH x WIDTH (Example: the number 12 can be contained in a 1x12, 2x6, or 3x4 rectangle)
Small example of finished puzzle:

SHIKAKU #1 - INTERMEDIATE LEVEL

Shikaku is a simple pencil puzzle which uses logic with a little bit of geometry knowledge.  I made the following Shikaku puzzle for those of you that enjoy a quick brain workout without having to spend hours on one puzzle.  This puzzle is easily worked by saving the picture file and opening it with the paint program.

See the rules for Shikaku on the "Rules" page link to the left of the blog.  And find a small hint on the "Pencil Puzzle Help" page.

SHIKAKU #1 - INTERMEDIATE LEVEL

SOLUTION