2 player chess on website on a same computer?

chess online 2 player 2 player chess.. 100% free traditional board game for two players; 8x8 board; goal to checkmate opponent's king with own pieces like queen, rooks, knhts, bishops.

chess online, Open two browser windows (one incognito because otherwise it mht override a session and complain). Then put those windows side by side so each player can.