Problem Display
PID: 89123 (5K2/8/6P1/4k2P/8/3Q4/7P/7R w - - 0 1)

Rubens, Nathan

American Chess Problemist, 1950

5K2/8/6P1/4k2P/8/3Q4/7P/7R

#3

6 + 1


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Tries
    • 1.Kg7?
      • threat
        • 2.Rf1
          • 2...Ke6
            • 3.Re1#
      • 1...Ke6
        • 2.Re1#
      • 1...Kf4!
    • 1.Rb1?
      • 1...Kf4
        • 2.Rb5
          • 2...Kg4
            • 3.Qg3#
      • 1...Ke6
        • 2.Rb5
          • 2...Kf6
            • 3.Qf5#
            • 3.Qd6#
      • 1...Kf6!
    • 1.Rc1?
      • 1...Kf4
        • 2.Rc5
          • 2...Kg4
            • 3.Qg3#
      • 1...Ke6
        • 2.Rc5
          • 2...Kf6
            • 3.Qf5#
            • 3.Qa6#
            • 3.Qd6#
      • 1...Kf6!
    • 1.h4?
      • 1...Ke6
        • 2.Re1+
          • 2...Kf6
            • 3.Qf1#
            • 3.Qf3#
      • 1...Kf6
        • 2.Qe2
          • 2...Kf5
            • 3.Rf1#
      • 1...Kf4!
  • Keys
    • 1.Ra1!
      • 1...Kf4
        • 2.Ra5
          • 2...Kg4
            • 3.Qg3#
      • 1...Ke6
        • 2.Ra5
          • 2...Kf6
            • 3.Qf5#
            • 3.Qa6#
            • 3.Qd6#
      • 1...Kf6
        • 2.Qb5
          • 2...Ke6
            • 3.Ra6#

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