Blog posts with problems to get your brain going! You get a new problem every fortnight and the solutions are published later.

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The next problem is scheduled for Sunday, 6th of February.

You may notice some problems are missing... I'm still migrating articles from my old blog.

Can you tile a chessboard with two missing squares?

How many queens and knights can you place on a chessboard?

In how many ways can you place 8 queens on a chessboard?

A Alice e o Bruno vão sentar-se, frente a frente, com um tabuleiro de xadrez entre eles. Vão jogar um jogo, mas neste jogo só entra uma única peça: um cavalo. Quem vai ganhar?