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