Wesley So resorted to perpetual checks and held Viswanathan Anand to a 27-move draw in the fourth round of the Croatia Grand Chess Tour here on Saturday.
On a day when all games ended in draws, Ian Nepomniachtchi continued to lead with 3.5 points, a point ahead of Magnus Carlsen and Wesley So.
The results (fourth round): Wesley So (USA, 2.5) drew with Viswanathan Anand (1.5); Ian Nepomniachtchi (Rus, 3.5) drew with Sergey Karjakin (Rus, 2); Magnus Carlsen (Nor, 2.5) drew with Shakhriyar Mamedyarov (Aze, 1.5); Maxime Vachier-Lagrave (Fra, 2) drew with Anish Giri (Ned, 1.5); Levon Aronian (Arm, 2) drew with Fabiano Caruana (USA, 2); Ding Liren (Chn, 1.5) drew with Hikaru Nakamura (USA, 1.5).
