Level 42

Clear cards above the Golden Card first to get loads of points.
Round 1 of level 42 has 28 starting cards in the deck. Try to clear out the middle section first, to get to the golden card at the bottom of the middle section. The Golden card will help you get the scores you need to pass. There are some "loose cards" on the rable. Don't use them, unless the generate at least 400  points or help you to free an essential card.

Round 2 of level 42 has 23 starting cards in the deck. Do your best to get to the upper right side Golden card ASAP, you'll regret not taking those extra points, if you leave the golden card unused, as that probably will make you fail getting the one Star needed to complete level 42.