Game 1 pg. 3-18 T Gruber vs Euwe, 1921  (C45) Scotch Game, 21 moves, 0-1 Game 2 pg. 18-27 Euwe vs A van Foreest, 1921  (C53) Giuoco Piano, 22 moves, 1-0 Game 5 pg. 49-59 H van Hartingsvelt vs Euwe, 1919  (C44) King's Pawn Game, 30 moves, 0-1 Opening moves mirror Game 14 pg. 143-155 Euwe vs J Penrose, 1958  (A40) Queen's Pawn Game, 53 moves, 1-0 4 games