
Solution

1. Rd8! attacks the defender of the b7-Rook
1. Rd8 Qxd8 2. Qxb7#
Or
1. Rd8 Ne7 2. Rxc8+ Rxc8 3. Qxb7#
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1. Rd8! attacks the defender of the b7-Rook
1. Rd8 Qxd8 2. Qxb7#
Or
1. Rd8 Ne7 2. Rxc8+ Rxc8 3. Qxb7#