$800 (standard for 1st prize)
+
$50(standard for 13th prize)
+
$50(standard for 14th prize)
+
$50(standard for 15th prize)
+
$50(standard for 16th prize)
as there were only 12 teams for xiangqi.
aiyah, the prizes from 13th to 16th should add to 9th, 10th, 11th and 12th to make more teams happy, right ? :(