LeSwamp: Capablanca now decided to play Q-pawn games, instead of K-pawn games as White.
A) 7...c4?! Already a weak move! 7...cxd4 8.Nxd4 (8.exd4 Bd6=) Bd6= ; or 7...a5!? could lead to a small advantage for White though.
B) 13...Rac8?! 14.Ne5! White now has a clear advantage. Corzo's move appears logical, but is dubious here. Better is 13...Qc7 White small advantage. Other alternatives would be 13...Be7 White advantage ; 13...Ba5!? White advantage.
C) 15...Qxb3? This time, the mistake is serious. This pawn was poisonnous... And Black is already on the edge of the cliff... Correct move would be 15...a6 White clear advantage ; 15...Ra8 White huge advantage.
D) 16.c5?? Incredible! Capablanca misses the possibility of getting a winning game! 16.Ba3! Qb6 (16...Rfd8? 17.Rfb1 Qa4 18.Nxd7! with idea Bc5 or Bb4 which wins the black queen. White is winning.) 17.Bxf8 Kxf8 (17...Rxf8 18.Nxd7! Nxd7 19.Rfb1 with idea of cxd5. White winning.) 18.Nxc6 with idea of c4-c5 if Black takes back with the pawn or the bishop , or Rfc1 if blacks captures the knight with the Queen. In any case, Capablanca would have got a winning game.
E) 16...Rfd8?? Corzo hasn't realized his situation yet! 16...Nxe5! 17.dxe5 Ne4 (only move) 18.Bxe4! dxe4 19.Rfb1 Qd3! 20.Qxd3! exd3 21.Rxa7! Rxc5! 22.Ba3 Rc2 (22...Rb5 23.Rxb5 Bxb5 24.Bxf8 d2! 25.Ra1 Ba4! 26.Bd6 d1Q 27.Rxd1 Bxd1= with bishops of opposite color) 23.Bxf8 Kxf8 24.Rab7! d2! 25.Rf1 (only move) Ba4! 26.Rb8+! Ke7 27.Rb7 with a perpetual check, as if Black's king gets closer to the rook by 27...Kd8 28.Rb4! Ra2 (only move) 29.f3 is to White's advantage.
F) 17.Bc2. Stronger would have been 17.f3! Nxe5 (17...Ne4 18.fxe4 Nxe5 19.dxe5 would transpose) 18.dxe5 Ne4 19.fxe4 (only move) dxe4 20.Be2! and White has a winning game.
G) 19.f3?? Losing all the advantage, while the boy had a winning game! 19.Nxd7! Rxd7 20.f3! Nxc5 (20...Nc3?? 21.Bxc3 Qxc3?! 22.Bxh7+ wins ; 20...Nf6?? 21.Bd3! followed with Bc3 wins) 21.dxc5 with a winning game.
H) 20...Qd2?! 20...Qc4! 21.fxe4! Nd3! 22.Bxd3! Qxd3 23.e5 (or 23.Bb4 Bb5 with idea e6-e5 Black small advantage) b6 with idea Bb5 Black small advantage ; also, 20...Qb5! 21.fxe4! Nd3! transposes.
I) 21.fxe4?! Decidedly... 21.dxe5! Qxc1 (only move) 22.Rfc1! Nc3! 23.Bxh7+ Kxh7 24.Rxc3=
J) 21...Qxc1?! Missing 21...Nc4! 22.Re1 (22.Bb3 Qxe3+! 23.Qxe3 (only move) Nxe3 24.Rfe1! Nc4! Black clear advantage) Qxc1 23.Bxc1! b6 Black small advantage.
K) 30.Kf2?! Better is 30.Be1!= with idea Bg3.
L) 35.Ba5?! 35.Be1 Black small advantage ; 35.Kd3 Nf5! Be1 Black small advantage ; 35.h5 Black small advantage.
M) 37...Rc8?! 37...bxa6! 38.Rb8+ (only move) Rf8 39.Bxc7 Rxb8! 40.Bxb8 Kf7 Black clear advantage.
N) 41.Kf3? a serious mistake. 41.Kd2! Rxb7 42.Rxb7=
O) 42...Ne6?! 42...Ne2! 43.Rd7 (43.Kf2 Nxd4 44.Rd7! Re2 trasposes) Nxd4 (only move) 44.Kf2! Re2+! 45.Kg1 (or 45.Kg3 Re5 Black clear advantage ; 45.Kf1 Rc2 Black clear advantage) Rc2 Black clear advantage.
P) 43...Rc8?! 43...Rf8+ 44.Ke3 (44.Kg3 g5 Black small advantage ; 44.Kg4 Rf2 Black small advantage) g5! Black small advantage or = ; 43...h5 44.Rd7 Ra8 (44...Rf8+ 45.Ke3! h4=) 45.Bd2! Nxd4+ 46.Ke3! Ne6 47.Rxd5 (only move) g6 Black small advantage.
Q) 46...Kf8?! 46...Ne4!=
R) 47...Ne4? Serious mistake. 47...h6 should be enough to secure the draw, but White retains a small advantage.
S) 49.c6?? Capablanca plays this very weak move and offers a draw, as it seems. True, after 49...Ke8, the game is a draw. BUT CAPABLANCA HAD THE WIN HERE!!! Let's see : 49.Kf5! Kg8 50.Ke6! Nf6 (only move) 51.Bd2! Kf8 52.Bf4 Re8+ (only move) 53.Kd6! Rd8+! 54.Kc6 h5! 55.Kb6! with idea of c5-c6, winning...