The Thai played a good game against the strongest Chinese player. After 35 moves he had even a better position. I think (14-20) was not a good move. Better seems (23-28!) 32x23 (19x28) and white has to defend his position, because after 38-33? black wins by (16-21!) 27x16 (28-32) 37x28 (14-20) 25x14 (13-19) 14x23 (18x49).