Origami Checkerboard


#37

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

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