Tamim Iqbal scored his maiden test century to help Bangladesh build a 252-run lead over the West Indies with the tourists eyeing just their second win in test cricket.
Bangladesh, whose only test victory in 59 attempts came at home to Zimbabwe four years ago, reached 321 for five at the close of the fourth day of the opening test at St Vincent.
The makeshift West Indies attack, assembled hastily after the 13 selected players boycotted the match, toiled at Arnos Vale against some accomplished batting, particularly from left-hander Iqbal.
Yet when Bangladesh tried to up the tempo in the final session, they lost four wickets and were unable to get themselves in a position to declare overnight.
The 20-year-old Iqbal, reaching his first century in his 11th test match, has frequently shown the ability to make a big score but lacked the application to bat for long periods.
