Connect-Four

I made a project Connect-Four and I used Intellij IDEA Enviorment(which contains scratch for UI) to develop the code in FXML file using Scratch and CoreJava 8.0 for backend coding.
Connect Four is a two-player connection game in which players first choose a color and then take turns dropping colored discs from the top into a seven-column, six-row vertically suspended grid. The pieces fall straight down, occupying the next available space within the column. The objective of the game is to be the first to form a horizontal, vertical, or diagonal line of four of one's own discs. Connect Four is a solved game. The first player can always win by playing the right moves.