Connect 4 APK

Connect 4 (also known as Captain’s Mistress, Four Up, Plot Four, Find Four, Fourplay, Four in a Row, Four in a Line and Gravitrips (in Soviet Union)) is a two-player connection game in which the 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.
I have updated the intelligence of the processor (opponent).
Levels became more difficult.
For level 1, the processor (opponent) counts one move to win (or lose).
For level 2 two steps and so on.

Please say too hard or still easy. Thank you.