Origami Checkerboard


#31

Legend
Valley folding
Mountain folding
0.
↓
 □□□□□ 
 □□□□□
 □□□□□
 □□□□□
 □□□□□
1.
      →
 ■■■■■
 □□□□□
 □□□□□
 □□□□□
     
2.
← 
 ■■■■
 □□□□
 □□□□
 □□□□
  
3.
  ■■■
  □□□
  □□□ 
  □□□
 ↑
4.
  ■■■
  □□□
  □■□

Nov 23, 2004 by k16@chiba.email.ne.jp