Chess

Chess.com is an online chess platform where members play chess against each other or against bots with different skill levels and playing styles, take lessons designed for players of all levels, solve puzzles to sharpen their game, and watch live events with real-time, move-by-move analysis, including coverage of the 2026 Chess Olympiad. It counts more than 250 million players among its members and offers apps on the App Store and Google Play for playing on the move.

Its ads.txt file lists 26 ad system lines, 17 direct and 18 reseller, across web placements.