Boardgamegeek https://boardgamegeek.com/boardgameexpansion/4101/catan-cities-knights-5-6-player-extension
English - Now up to six players can muster their knights against the scourge threatening Catan! The 5-6 Player Expansion for The Cities and Knights of Catan allows you to expand and inject more excitement into your games without sacrificing ease of play.