West Indies captain Chris Gayle made a timely return to the century ranks Monday to ensure a final day showdown in the second cricket Test against New Zealand at McLean Park here. Gayle, unbeaten on 146 – his first century from 24 Tests in three years - provided more than half of the West Indies total as it ended the fourth day at 278 for seven in its second innings, for an overall lead of 214. New Zealand felt in with a chance to end the West Indies innings before the final day when it had the tourists at 106 for four. But it was thwarted by a valuable 124-run stand for the fifth wicket by Gayle and Australian-born Brendan Nash. With no Shivnarine Chanderpaul to rely on after the world's most prolific batsman in the past two years fell on the first ball, Gayle and Nash dug in to bring the West Indies back into the Test. Gayle started in fiery form, but became more watchful as his century neared, spending 15 overs in the 90s. On 99 he offered one of his few chances when he played upishly to midwicket and the ball fell just short of Daniel Flynn. He then offered a chance going for his 100 when he stopped in the middle of the pitch and had second thoughts about the run before he saw Jeetan Patel misfield at point and he was able to get home for his century. By the close of play he had been at the wicket for nearly five-and-a-half hours in an innings that included 13 fours and six sixes. For the West Indies, survival through the day mattered most. They only scored 216 runs in the three sessions but ensured they would go into the fifth day with three wickets to build a demanding chase for New Zealand. Nash, in only his second Test, provided valuable support for Gayle as they stayed together for 55 overs, batting right through the middle session. The partnership was broken soon after when a James Franklin bouncer clipped Nash on the gloves and went straight to Jamie How at second slip. It was desperately needed stand for the West Indies after an early collapse when it lost two wickets on 106. Going into the final day New Zealand, with three wickets still to get before it can start its run chase, has only one referral left under the trial system where a side has three chances to contest an umpire's decision. Vettori questioned two leg before wicket chances but both were turned down by the third umpire. ICC to assess Pak safety The International Cricket Council (ICC) will conduct its own security assessment before posting umpires for Sri Lanka's proposed Test tour of Pakistan early next year, its chief executive said in Mohali on Monday. Sri Lanka Cricket (SLC) agreed to step in after the Indian government refused permission for the team to tour Pakistan from next month due to strained bilateral relations following last month's militant siege in Mumbai. The Indian government has blamed militants based in Pakistan for the raid, which left 179 people dead. “I'm convinced that the Sri Lankan cricket board will do everything necessary to ascertain whether (there is any risk),” ICC chief executive Haroon Lorgat told a news conference. “They will also seek assurances from the PCB (Pakistan Cricket Board). And they will do the independent assessment,” he said. “In turn, if we get the request for support, our independent consultant will certainly do so.” Lorgat hoped the situation would improve in Pakistan, where there has been a spate of suicide bombings in the last year. Pakistan has not played a Test match in 2008 after teams refused to tour.