6/8/2020 – The famous rook endgame Spielmann-Rubinstein is indeed amazingly deep, and all published analysis is incomplete or partly wrong. Most controversial was the question about which was Spielmann's last mistake. Charles Sullivan has solved this riddle and proved that with 60.Rc1! Spielmann could still have drawn. This is a challenge even for the modern engines, as an eight-piece rook ending with three against one pawn must be evaluated as a draw at the end of a critical line.

6/3/2020 – 1909, Saint Petersburg: in one of the strongest tournaments in history Akiba Rubinstein defeated Rudolf Spielmann in a dramatic endgame. After the game Spielmann said: "Akiba, if you lived in the Middle Ages you would have burned at the stake: what you do in rook endgames can only be called witchcraft!" Was that really the case, or are there holes in the ending that all analysts over the years have missed? Can you help endgame specialist GM Karsten Müller answer this question? | Pictured: Rudolf Spielmann (left) and Akiba Rubinstein (right)

12/16/2019 – Fyodor Duz-Khotimirsky is a chess legend. After all, at the great international tournament in St. Petersburg 1909 he won against both winners, Emanuel Lasker and Akiba Rubinstein. This success later helped him in a rather precarious situation. VLASTIMIL HORT knows more.