Problem Display
PID: 56729 (7K/5p2/5n2/RB1pp3/2p1p3/Pp1k3p/2p1N2P/2B3NQ w - - 0 1)

Liebeck, Professor Hans

The Problemist, 2005

7K/5p2/5n2/RB1pp3/2p1p3/Pp1k3p/2p1N2P/2B3NQ

#4

9 + 10


SOLUTION


  • SOUND
  • Keys
    • 1.Ba4!
      • threat
        • 2.Rb5
          • threat
            • 3.Rxb3+
              • 3...cxb3
                • 4.Bb5#
              • 3...c3
                • 4.Bb5#
                • 4.Rxc3#
          • 2...c3
            • 3.Rxb3
              • threat
                • 4.Bb5#
                • 4.Rxc3#
              • 3...Kc4
                • 4.Rxc3#
            • 3.Rb4
              • threat
                • 4.Bb5#
            • 3.Rc5
              • threat
                • 4.Bb5#
                • 4.Rxc3#
          • 2...b2
            • 3.Rb3+
              • 3...cxb3
                • 4.Bb5#
              • 3...c3
                • 4.Bb5#
                • 4.Rxc3#
            • 3.Rxb2
              • threat
                • 4.Bxc2#
              • 3...c3
                • 4.Bb5#
          • 2...d4
            • 3.Rxb3+
              • 3...cxb3
                • 4.Bb5#
              • 3...c3
                • 4.Bb5#
      • 1...b2
        • 2.Rxd5+
          • 2...Sxd5
            • 3.Qxe4+
              • 3...Kxe4
                • 4.Bxc2#
      • 1...d4
        • 2.Rxe5
          • threat
            • 3.Sf4+
              • 3...Kc3
                • 4.Sge2#
            • 3.Rxe4
              • threat
                • 4.Rxd4#
                • 4.Qf3#

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