Origami Checkerboard


#44

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

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