Roycroft, A. Test Tube Chess, a comprehensive Introduction to the Chess Endgame Study
Roycroft, A. Test Tube Chess, a comprehensive Introduction to the Chess Endgame Study, hardcover, Faber and Faber, 1972, 370 p engelse notatie
Roycroft, A. Test Tube Chess, a comprehensive Introduction to the Chess Endgame Study, hardcover, Faber and Faber, 1972, 370 p engelse notatie