MESON Chess Problem Database

Problem Display
PID: 164804 (3Q4/5P1R/4k3/1P2p3/4p3/4K3/8/8 w - - 0 1)

van Engelen, Adrianus Cornelis

Probleemblad, 1978

3Q4/5P1R/4k3/1P2p3/4p3/4K3/8/8

#2

5 + 3

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qf6+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kd7
        • 2.f8Q#
        • 2.f8R#
      • 1...Kxf6!
  • Keys
    • 1.Qg8!
      • threat
        • 2.f8Q#
      • 1...Kd5
        • 2.f8Q#
        • 2.f8B#
      • 1...Kf5
        • 2.f8Q#
        • 2.f8R#
      • 1...Kd6
        • 2.f8Q#
        • 2.f8B#
      • 1...Kf6
        • 2.f8Q#
        • 2.f8R#
      • 1...Kd7
        • 2.f8Q#
      • 1...Ke7
        • 2.f8Q#

Anticipated by 9404(1902), 17133(1902), 151464(1908)

This anticipates 55187(2004)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(E)
        • K(c);S_FLIGHT::P=Q
      • Refutation
        • K(c);P-FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Threat
      • P=Q
    • Vars
      • K(c);S_FLIGHT::P=Q
      • K(c);P-FLIGHT::P=Q
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