Maybe just luck but this worked for me. If you do not pick a red card on level 2, look where red card is - box 1, box 2, box 3 or box 4. Make a mental note and pick that box on level 3. Again look where red card is, make a mental note and pick that box on level 4. Again make a note of where the red card was but for a different reason because from memory, level 5 has no red card so pick any box. On level 6, do NOT pick the box where the red card was on level 4 because it will repeat and you will lose. On level 7 pick the box where the red card was on levels 4 and 6. Make a note of where the red card was on 7 and pick this box for level 8. Repeat the same process for level 9, level 10 has no red card so pick any box. Then quit before you start believing you are invincible 🤣