W

This position is from the game Botvinnik-Chekhover, Moscow 1935. It is White's move, and he has to decide on how to pursue what is already a promising initiative. He has the upper hand in the centre, a strong knight on e5, and well-placed bishops all these factors together mean that he has some of the preconditions for an attack on the king, without yet having entered on any commitments. He can therefore be said to be on the threshold of the first phase and must consequently look for further...