Problem Display
PID: 44819 (q4b2/8/3B4/1p6/8/2Q1p3/2P1K1pp/4N1k1 w - - 0 1)

Cheney, George Nelson

Source?, 0000

q4b2/8/3B4/1p6/8/2Q1p3/2P1K1pp/4N1k1

#3

5 + 7


1679 American Chess Nuts 1868
5919 The Chess Players' Quarterly Chronicle 1870
1829 The Theory of Pawn Promotion 1912

SOLUTION


  • SOUND
  • Sets
    • 1...Qc6
      • 2.Qxc6
        • threat
          • 3.Qxg2#
        • 2...Kh1
          • 3.Qxg2#
        • 2...h1Q
          • 3.Sf3#
        • 2...h1B
          • 3.Sf3#
    • 1...h1Q
      • 2.Qxe3#
    • 1...h1B
      • 2.Qxe3#
    • 1...h1R
      • 2.Qxe3#
  • Tries
    • 1.Qa1?
      • threat
        • 2.Sf3#
      • 1...Kh1
        • 2.Qxa8
          • threat
            • 3.Qxg2#
          • 2...Kg1
            • 3.Qxg2#
      • 1...Qxa1!
    • 1.Qe5?
      • threat
        • 2.Qxh2#
      • 1...Qf3+
        • 2.Sxf3+
          • 2...Kh1
            • 3.Qxh2#
      • 1...Bxd6!
    • 1.Qc6?
      • threat
        • 2.Qxa8
          • threat
            • 3.Qxg2#
          • 2...Kh1
            • 3.Qxg2#
          • 2...h1Q
            • 3.Sf3#
          • 2...h1B
            • 3.Sf3#
      • 1...Kh1
        • 2.Qxa8
          • threat
            • 3.Qxg2#
          • 2...Kg1
            • 3.Qxg2#
      • 1...Qb7
        • 2.Qxb7
          • threat
            • 3.Qxg2#
          • 2...Kh1
            • 3.Qxg2#
          • 2...h1Q
            • 3.Sf3#
          • 2...h1B
            • 3.Sf3#
      • 1...Qxc6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qxh2#
      • 1...Qf3+
        • 2.Sxf3+
          • 2...Kh1
            • 3.Qxh2#
      • 1...Bxd6
        • 2.Qxa8
          • threat
            • 3.Qxg2#
          • 2...Kh1
            • 3.Qxg2#
          • 2...h1Q
            • 3.Sf3#
          • 2...h1B
            • 3.Sf3#
      • 1...h1Q
        • 2.Qa1
          • threat
            • 3.Sf3#
          • 2...Qf3+
            • 3.Sxf3#
      • 1...h1R
        • 2.Qa1
          • threat
            • 3.Sf3#
          • 2...Qf3+
            • 3.Sxf3#
      • 1...Bh6
        • 2.Qxa8
          • threat
            • 3.Qxg2#
          • 2...Kh1
            • 3.Qxg2#
          • 2...h1Q
            • 3.Sf3#
          • 2...h1B
            • 3.Sf3#

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