N Chandra Sekhar (b July 1, 1974) of Guntur, Andhra Pradesh used 1,862 small dominos of 0.8 cm length, 0.4 cm width and 0.2 cm thickness and arranged them in three rows totalling 26 ft in length. The total weight of dominos was 164 g at an average of less than 0.1 g per tile. On June 13, 2015, he gently touched the first tile and all the 1,862 toppled in domino effect in 27.13 sec. He spent 100 hr in trial runs.