Solution
1… exf3+ uses the X-ray power of the c6-bishop to indirectly defend the black rook against being captured.
Ie. 1… exf3+ 2. Kxh1 f2+, followed by f1(Q)
Or
1… exf3 2. Kf2 Rh2+, followed by Rxb2
Exercise #87
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1… exf3+ uses the X-ray power of the c6-bishop to indirectly defend the black rook against being captured.
Ie. 1… exf3+ 2. Kxh1 f2+, followed by f1(Q)
Or
1… exf3 2. Kf2 Rh2+, followed by Rxb2