The second defense which Black could try is (1) ..., Ktxf3+; (2) Pxf3, Bxf3.  Now (3) Bxf6, Pxf6; (4) Q-h6 would be fatal for White as Black plays K-h8 and there is no protection against the threat R-g8+.  But White can again make a preparatory move which secures for him the victory.  This is (3) P-h3, with the view to make room for the Rook by K-h2.  The only way to counter White’s threat is now P-c6.  However, after (4) Ktxf6+, Pxf6; (5) B-h4, K-h8; (6) K-h2, R-g8; (7) R-g1, Q-e7; (8) R-g3 Black is unable to stave off defeat any longer.  Whatever he plays, White succeeds in attacking f6 for the second time while Black has no second protection at his disposal.  For instance, (8) ..., B-h5; (9) Q-h6, B-g6; (10) R-f3—­or (8) ..., Rxg3; (9) Pxg3 and (10) Rf1.

The most interesting line of defense is the third one mentioned, that is (1) ..., P-c6.  After (2) Ktxf6+, Pxf6; (3) B-h4 a situation arises similar to the one discussed in the line of play commencing with (1) Ktxf6+, but with the big difference that White is now one move ahead in the attack.  This is the move Q-d2 in answer to which Black was forced to make the move P-c6 which does not improve the constellation of the Black pieces in any way.

This one move is sufficient to secure for White an easy victory.  After (3) ..., Bxf3; (4) Q-h6, Kt-e2+; (5) K-h1, Bxg2+; (6) Kxg2, Kt-f4+; (7) K-h1, Kt-g6 the position of Diagram 48 is reached in which White can force the mate, or win Black’s Queen in a most ingenious manner.  If White tried to win by (8) R-g1, threatening mate in four moves through Rxg6, Qxg6, Q-h6 and R-g1 Black could sufficiently defend himself with (8) ..., P-d5, unpinning the Pawn f7 and enabling B-e7, which would supply the much needed protection for the square f6.  However, White can frustrate Black’s intention by playing (8) P-d4!!  If Black takes with the Pawn, (9) P-e5 follows forcing Pd6xe5 after which Black cannot any more intercept the diagonal of the Bishop c4 so that there remains no defense against (10) R-g1.

+---------------------------------------+
8 | #R |    |    | #Q |    | #R | #K |    |
|---------------------------------------|
7 | #P | #P |    |    |    | #P |    | #P |
|---------------------------------------|
6 |    |    | #P | #P |    | #P | #Kt| ^Q |
|---------------------------------------|
5 |    |    | #B |    | #P |    |    |    |
|---------------------------------------|
4 |    |    | ^B |    | ^P |    |    | ^B |
|---------------------------------------|
3 |    |    |    | ^P |    |    |    |    |
|---------------------------------------|
2 | ^P | ^P | ^P |    |    | ^P |    | ^P |
|---------------------------------------|
1 | ^R |    |    |    |    | ^R |    | ^K |
+---------------------------------------+
a    b    c    d    e    f    g    h

Diagram 48.

If, on the other hand, Black takes the Pawn d4 with his Bishop, White continues with (9) P-c3, B-c5; (10) Ra1- d1, again preventing the interception of the Bishop c4 and threatening R-g1.  The consequence could then be:  (10) ..., K-h8; (11) R-g1, Q-e7; (12) R-d3, R-g8; (13) R-h3, Ktxh4; (14) Qxh7+ and (15) Rxh4 mate, or:  (13) ..., R-g7; (14) R-f3, Ra8-g8; (15) Bxf6, Q-d7; (16) R-h3 and the mate on h7 can only be avoided by the sacrifice of the Queen for the Rook.