String to fold:
XOXOOOOOXXXXOOOOXOOXXOOXOOXXOOOXXOOOOOXXRandom fold (* means dead end, backing up):
X→O→O→O
↑ ↓
O→X X←O←O
↑ ↓
X→O O←O X
↑ ↓ ↑
X→X→X→O O O→X→X
↑ ↓ ↑
X←O←O O O
↑ ↓ ↑
O O→O O→X→X
↑ ↓ ↑
O→O X→O
↑
X→O→X
↑
Record number of incidences: 5
Record-achieving fold sequence:
↑↑↑↑←↓↓←↑↑↑↑↑↑←↓↓↓↓↓↓←↑↑↑↑↑↑←↓↓←↑↑↑↑↑←↓