Azhar Ali became the fourth Pakistani batsman to score a Test triple century as the West Indies were made to toil hard on day two of the first Test in Dubai.
The right handed opener showed phenomenal concentration as he converted the first ever day/night Test century first into a double ton and then into a simply remarkable 302 not out.
The West Indies attack looked toothless and both of the wickets they managed to take on the second day could be put down to a loss of concentration by Pakistan's batsmen.
It may be a harsh criticism of a team that scored 579/3 declared but Pakistan may be concerned that no other batsman could go to three figures despite being presented with a golden opportunity to do so.
Asad Shafiq scored 67 before he tamely slapped a checked drive straight back to the bowler Devendra Bishoo.
Bishoo would profit from another lapse as Babar Azam lofted a tossed up delivery straight to cover to depart for 69 when he looked set to score a hundred on Test debut.
Misbah-ul-Haq played a cameo role as he stayed with Azhar until he got past the 300 mark at which point the captain turned for the dressing room declaring on 579/3.
Yasir Shah would remove opener Leon Johnson with a quicker delivery but the West Indies were otherwise untroubled as they moved to 69 for 1 at the close with Kraigg Brathwaite (32) and Darren Bravo (14) at the crease and the men from the Caribbean trailing by 510 runs.