Back Rank Combinations – Diagram 46:
White checkmates in 3 moves.
See Answer below.
Chapter 2 BACK RANK COMBINATIONS
A BACK RANK COMBINATION is based on the enemy King being trapped on the back rank by its own pawns and the fact that the back rank in not protected by a Rook or Queen. Some back rank combinations are simple, as in introductory Diagram 32. Others take two or more moves to set up.
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Answer – Diagram 46:
1. Ra8+ Qxb8
2. Ra/dxd8+ Be8
The slash (/) is used to show that either the Rook on the a-file or d-file (Ra/dxd8+) takes on d8.