How do I get past the 1st Sudoku game in level #2 of "Tricky 3D (The Whole World In 3 D)"? The SKIP button does not work and I cannot play these numbers games. I cannot play or understand how Sudoku works. I bought the games for the Match-3 and Mahjong. How do I get to play all levels of this game when I cannot pass the Sudoku levels?