2017 Asian School Singles gold medallist, Alex Yu got off to a cracking pace with 225 in his opening game to lead Malaysia's Mohad Uzair Irsyad by three pins and team-mate, Nixon Chan in third a further three pins away.
Mohd Uzair took over the lead after the second game but lost it immediately in the third game when Yu rolled a superb 247 to the lead. Tse, who had a moderate start in his first two games, posted a bigger game of 253 to take up second, three pins behind Yu.
Tse added another strong game of 246 to become the new leader midway through the finals, 44 pins ahead of Yu. Tse bowled consistently with 190, 216, 258 and 191 to end the finals with 1762 to capture the Youth Open title.