Sombilon scored five points after six rounds to win the title against some of the top chess players in Mindanao.
The Davaoenos won cash and a trophy as prizes.
The second place went to another Davaoeo, Fide Master Austin Jacob Literatus, who also won cash and a trophy.
The third place went to National Master Elwin Retanal.
The fourth place went to veteran chess organizer Alfred Moulic.
The competition was organized by NM James Infiesto w/ Jojo Palero as arbiter. (Romeo Braceros Jr.)