India’s D Gukesh and defending World Champion China’s Ding Liren played out Catalan Opening in the ninth round of the World Chess Championship Final happening in Singapore on Thursday. GUKESH VS DING, WORLD CHESS-CHAMPIONSHIP ROUND 9 LIVE UPDATES In the Catalan Opening, White starts with central pawn push — d4, while Black advances the knight to f6. Gukesh and Ding …