Chess opening are so complex and theoretical that amateur players will have trouble understanding them. An example is the Perenyi Attack of the Sicilian Defense (see diagram) which yields an immensely complicated and tactical position that even strong players have difficulty handling, and that is beyond the comprehension of most amateurs. Major changes in the rules of chess in the late fifteenth century increased the speed of the game, consequently emphasizing the importance of opening study. Thus, early chess books, such as the 1497 text of Luis Ramirez de Lucena, present opening analysis, as does Pedro Damiano (1512), and Ruy López de
Ruy Lopez, Noah's Ark Trap and José Capablanca at the Budapest tournament in 1929: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 5... b5 6. Bb3 Nxd4 7. Nxd4 exd4 8. Qxd4?? 8... c5 9. Qd5 Be6 10. Qc6+ Bd7 11. Qd5 c4 (see diagram) A variation of this trap can occur in the Sicilian Defense after the moves 1.e4 c5 2.Nf3 Nc6 3.Bb5 (the Rossolimo Variation) a6 4.Ba4?? (4.Bxc6 is necessary and the point of 3.Bb5 itself) b5 5.Bb3 c4 (see diagram) and the bishop is similarly trapped. Bibliography Ruy Lopez, Noah's Ark Trap The Noah's Ark Trap