THIRUVARUR: Vidit Gujrathi maintained his sole lead with six points at the end of Round 8 of the ONGC 53rd national premier chess championship here on Monday.
IM P Karthikeyan also continued with good form to remain on second spot, half a point behind Gujarathi.
Former U-16 world champion SP Sethuraman and former U-14 world champion Vidit, both representing PSPB, played out a draw in the much awaited clash between the top two seeds.