1540. - Jueguitos

I recommend to them to prove the chat to nongo. In this game there is an element random, that joined a limited board, alters the theory known for the game of the Angel.

On this another game, we can say that it is almost liquidated: four demonstrations say that the angel wins if it is allowed to the angel to give two steps. But if the angel moves of one, as a king in a Chess board, is cooked. Very good summary of the demonstrations and links to the papers, here.

And, to relax the mind, an abstract jigsaw puzzle, sencillito, without images that they distract.