Problem Display
PID: 134466 (7R/5Nk1/5p2/5K2/5RP1/1B6/pppP1P1P/NbB5 w - - 0 1)

Bettmann, Henry Wald

The Theory of Pawn Promotion, 1912

7R/5Nk1/5p2/5K2/5RP1/1B6/pppP1P1P/NbB5

#3

11 + 6


SOLUTION


  • SOUND
  • Sets
    • 1...bxa1R
      • 2.Rc4
        • 2...Kxf7
          • 3.Rc7#
      • 2.g5
        • 2...fxg5
          • 3.Bb2#
  • Tries
    • 1.g5?
      • threat
        • 2.gxf6#
      • 1...bxa1B
        • 2.Rg4
          • threat
            • 3.gxf6#
          • 2...fxg5
            • 3.Rxg5#
        • 2.Rfh4
          • threat
            • 3.R4h7#
      • 1...bxa1Q!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Rfh3
          • threat
            • 3.R3h7#
      • 1...bxa1Q
        • 2.d4
          • threat
            • 3.Bh6#
      • 1...bxa1S
        • 2.Rfh3
          • 2...Sxb3
            • 3.R3h7#
      • 1...bxa1R
        • 2.g5
          • 2...fxg5
            • 3.Bb2#

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