Origami Checkerboard


#35

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

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