Duolingo also said each section represents a range on the Elo rating system, the method by which a chess player's skills are ...

Blue Prince features layers upon layers of puzzles, and not all of them are required to beat the game. As you explore both ...

Duolingo announced on Tuesday that beta testers can practice the centuries-old board game in ... moves in chess, it's possible to make moves that could be correct but aren't the best options.