Overnight leader Sandipan Chanda was joined by two others in the pole position after the sixth round of the 4th Kolkata Open Grandmaster Chess Tournament on Sunday. Chanda, Viktor Laznicka of the Czech Republic and Le Quang Liem of Vietnam have five points each.

Chanda and GM Nigel Short (4.5) of England drew a hard fought battle on the top board at the Gorky Sadan.