Problem Display
PID: 70504 (7r/1p5R/1K6/3N4/4NB1n/5n2/3p1Qb1/3Rr2k w - - 0 1)

Liebeck, Professor Hans

The Problemist, 2006

7r/1p5R/1K6/3N4/4NB1n/5n2/3p1Qb1/3Rr2k

#4

7 + 8


SOLUTION


  • SOUND
  • Keys
    • 1.Be3!
      • threat
        • 2.Qg1+
          • 2...Rxg1
            • 3.Sf2+
              • 3...Kh2
                • 4.Bf4#
          • 2...Sxg1
            • 3.Sf2+
              • 3...Kh2
                • 4.Bf4#
      • 1...Kh2
        • 2.Qg1+
          • 2...Kh3
            • 3.Sf2+
              • 3...Kg3
                • 4.Bf4#
          • 2...Rxg1
            • 3.Bf4+
              • 3...Kh1
                • 4.Sf2#
              • 3...Kh3
                • 4.Sf2#
          • 2...Sxg1
            • 3.Bf4+
              • 3...Kh1
                • 4.Sf2#
              • 3...Kh3
                • 4.Sf2#
      • 1...Rxd1
        • 2.Qg1+
          • 2...Rxg1
            • 3.Sf2+
              • 3...Kh2
                • 4.Bf4#
          • 2...Sxg1
            • 3.Sf2+
              • 3...Kh2
                • 4.Bf4#
      • 1...Rf8
        • 2.Rxh4+
          • 2...Sxh4
            • 3.Qxh4+
              • 3...Bh3
                • 4.Qxh3#
      • 1...Rg8
        • 2.Rxh4+
          • 2...Bh3
            • 3.Rxh3+
              • 3...Sh2
                • 4.Rxh2#
                • 4.Qxh2#
            • 3.Qxf3+
              • 3...Kh2
                • 4.Rxh3#
                • 4.Qxh3#
              • 3...Rg2
                • 4.Rxh3#
          • 2...Sh2
            • 3.Qg1+
              • 3...Rxg1
                • 4.Sf2#
                • 4.Rxg1#
          • 2...Sxh4
            • 3.Qxh4+
              • 3...Bh3
                • 4.Qxh3#
      • 1...Sg1
        • 2.Qxg1+
          • 2...Rxg1
            • 3.Sf2+
              • 3...Kh2
                • 4.Bf4#
      • 1...Sg5
        • 2.Qg1+
          • 2...Rxg1
            • 3.Sf2+
              • 3...Kh2
                • 4.Bf4#

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