chess online

once revealed makes the puzzle a great deal easier...

After about 10 minutes of staring at the board, I finally got it! A great puzzle!!

amazing easy puzzle, one of the greatest easy one for sure

One of the most difficult puzzles ever for me! How did this get in the easy category?

Quite difficult for this section, although i could solve it by visualization only

It is clear that we cannot move the knight because that means stalemate. The black king can only move to h7 or g8. It is not too difficult to see that rook moves won't help us either, nor playing the king (with or without check).

So i imagined what happens if we just play the Q to g1. For both blacks options, Kh7 and Kg8, we have a discovered check by playing the knight, at the same time forcing the king back to h8. So we just have to take care that the first queen move blocks that field, and the only move for that is Qa1

Yes indeed. I am not very good at it when more than 3 moves are involved, but because this is a 2-move problem with a relatively simple setup, i could visualize the resulting positions in my mind with not too much effort. It is a good training for real life game situations, where you have no analyze tool  

Actually, it would have been more logical for me to try out Qb1 (instead of Qg1) as a first move, because that forces the black king to g8, but the conclusion would just be the same.

I knew that the knight would make a discovered check with the rook, but the queen move took me a little while to find out. After 10 seconds staring, I figured out the queen move. Nice puzzle! Definetly deserves to be the puzzle of the day.