Origami Checkerboard


#18

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

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