|---------------------------------------|
5 | ^P | | | | | | | |
|---------------------------------------|
4 | | ^Kt| | | | ^K | ^P | |
|---------------------------------------|
3 | ^Kt| #P | | | | | | |
|---------------------------------------|
2 | | | #P | | | | | |
|---------------------------------------|
1 | | | | | | | | |
+---------------------------------------+
a b c d e f g h

DIAGRAM 19.

Black is a piece down but his two connected passed Pawns
constitute a dangerous threat. White, therefore, does best to
sacrifice a Knight for the two Pawns, as he then remains with two
Pawns against one. Black must finally give up his Bishop for
White's a-Pawn who threatens to queen, and then White wins by
capturing Black's g-Pawn and queening his own. Play might proceed
as follows: (1) Ktxc2, Pxc2; (2) Ktxc2, B-d5; (3) Kt-b4, B-a8;
(4) P-a6, K-g6; (5) P-a7, K-f6; (6) Kt-a6, K-e7; (7) Kt-c7, B-h1;
(8) P-a8 (Queen), Bxa8; (9) Ktxa8, K-f6; (10) Kt-c7, K-g6; (11)
Kt-d5, K-h6; (12) K-f5, K-h7; (13) K-g5, K-h8; (14) K-g6, K-g8;
(15) Kt-e7+, K-h8; (16) Kt-f5, K-g8; (17) Ktxg7, K-h8; (18) K-f7,
K-h7; (19) P-g5, K-h8; (20) Kt-f5, White could not play P-g6, as
Black would have been stalemate. (20) ..., K-h7; (21) P-g6+, K-
h8; (22) P-g7+, K-h7; (23) P-g8 (Queen) mate.