This is the only piece available to cover Q2, for the King’s Knight is pinned. White has another piece in reserve, his King’s Rook, and against this Black is defenceless.
Diag. 16
13. RxKt
compare Diag. 12.
13. … RxR 14. R-Q1 Q-K3
This releases the King’s Knight. Now White could win by playing BxKt and BxRch, but he prefers to end up with a magnificent sacrifice.
15. BxRch KtxB 16. Q-Kt8ch!! KtxQ 17. R-Q8 mate
The final position shows in a striking manner how a few well- developed pieces can be worth more than many undeveloped ones, and the whole game is an example of the fatal consequences which can follow the loss of a move, since it often leads to the compulsory loss of further moves in the course of the game.
“This is the curse of every evil deed
That propagating still it brings forth evil.”