Notes On Red Headed League

1765 Words Oct 9th, 2016 8 Pages
1. One-move checkmate problem:
White: K-g4; Pawns c4, e5; B-h7; R-e8; Black: K-e4; N-d4; Pawn f5; R-f8; Black moved its pawn from f7 to f5. White must now reply with a one-move checkmate on black. Which move is it? Explain why it is the correct move and use the checkmate criteria in "Check and Checkmate" in module # 10 on chess to justify your answer. (Note: White pawns move north and black pawns move south.)
White pawn on e5 takes the f7-f5 pawn “en passant,” checkmate. Since the pawn making the “en passant” is on its fifth rank from own side and opposing pawn moved 2 squares delivering the checkmate.

2. In the story "Red-Headed League", identify three important clues used by Sherlock Holmes to uncover the bank robbery plot. State the clue and the deduction each in one concise and clear sentence. Formulate Holmes ' reasoning in these three pairs of clues and deductions in terms of Modus ponens or Modus tollens or Disjunctive forms of deduction.

Clue #1 Deduction: Vincent Spaulding was doing something in the cellar that took many hours.
Modus Ponens: If the bank robber spent many hours in the cellar, then he must be digging a tunnel to some other building.
The bank robber spent many hours in the cellar.
C: The bank robber must be digging a tunnel to some other building.

Clue #2 Deduction: Clays trousers were dirty and the knees were worn,…
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