Sliding Piece Puzzles

by Hirofumi Fujiwara (Japan)

Sliding Piece Puzzle is very familar, the rule is very simple but it requires deep thought.

I made a JAVA version of Sliding Piece Puzzle, and I made my Java applet. My Java Puzzle Page has been well known in Japan. I dicided to make English page so that the people all over the world can enjoy my java puzzle pages.

Rule and How to play


The Sliding Block Puzzle Page

Block 10

I am making a new series now. The original is made by Minoru Abe (1985-86) as "Block 10". This type is harder than normal type in the cause of 2 L shaped pieces.

Left image is agreed by Minoru Abe.


Famous Problems

81 steps, very difficult

59 steps, difficult

135 steps? very difficult


Step by Step Problems
25 problems

No.1
10 steps

I solved many patterns of sliding piece puzzle about 20 years ago. Now, I'm glad to show you 25 problems. You can accustom to Sliding Piece Puzzle by these exercised.

In those days, I solved these problems by hand, and some of their shortest steps were wrong. I solved all of them by my program.

No.25
101 steps


V3.01 souce program is the new version. The source includes Japanese comments.

There are many problems on my Japanese version page The rule is same but the comments are Japanese.
Bugs & comments to - fuji@fuji.gr.jp. Thanks.


My home(Japanese)/ My home/ Java and Puzzle World