This complicates the game unnecessarily. R - K 1; was simple, and perfectly safe.
13. B - K 3
13. ........
B - Kt 5
This is a serious mistake. The position was most interesting, and though in appearance dangerous for Black, not so in reality. The right move would have been 13...R - Kt 5, when we would have 14 B × Kt, R × B; 15 P - Q B 3, B × P; 16 P × B, R - K Kt 5; 17 Q - K 3 (best), Q × P ch; 18 B - B 2, Q × Q; 19 P × Q, R × P, and Black has the best of the game with four Pawns for a Knight, besides the fact that all the White Pawns are isolated.
