Cribbage One is an application for playing 6-card Cribbage offline against a computer player. Cribbage is a popular two-player race card game where players aim to be the first to score the winning 121 points. Points are scored for combinations in the hand, in the crib, which alternately belongs to the dealer, and during the game. Cribbage One is a small, lightweight application that allows you to play Cribbage even if you are not very familiar with the game yet. Cribbage One will tell you the best move at each stage of the game, you can also choose not to show the tips automatically or turn it off altogether. Weight tables are used for the stage of discarding cards to the crib and the original ISMCTS algorithm for the game.