99Games has updated Chess Pro with the following features: - Instead of just three difficulty levels (Easy, Medium and Hard), Chess pro now comes with a slider where the user can choose the difficulty level. This provides an option to select closer to around 20 difficulty levels - Game strength has been increased We are also working on more features for this game. I will notify you shortly about the features we have planned for the next update. Have 5 Promo codes to share. Please PM me if you would like to try out Chess Pro. Please let us know your feedback and suggestions on the game.