MESON Chess Problem Database

Problem Display
PID: 99808 (2kB4/1R3P2/1PK5/8/8/8/8/8 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkelet, 1980

2kB4/1R3P2/1PK5/8/8/8/8/8

#2

5 + 1

6490 yacpdb 2009
5454 Near Snap 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd8
      • 2.f8Q#
      • 2.f8R#
  • Tries
    • 1.Kb5?
      • 1...Kxd8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kxb7!
    • 1.Kc5?
      • 1...Kxd8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kxb7!
    • 1.Kd5?
      • 1...Kxd8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kxb7!
    • 1.Kd6?
      • 1...Kxd8
        • 2.Rb8#
        • 2.f8Q#
        • 2.f8R#
      • 1...Kxb7!
    • 1.Ra7?
      • threat
        • 2.Ra8#
      • 1...Kxd8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kb8!
    • 1.Rc7+?
      • 1...Kxd8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kb8!
    • 1.Re7?
      • 1...Kxd8
        • 2.Re8#
        • 2.f8Q#
      • 1...Kb8!
  • Keys
    • 1.f8B!
      • 1...Kxd8
        • 2.Rb8#

Anticipated by 157303(1926)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XB(E)::P=Q
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT,XB(E)::P=Q
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,XB(E)::P=Q
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT,XB(E)::P=Q
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • K(B);P-FLIGHT
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • K(a);P-FLIGHT,XB(E)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(E)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(a);P-FLIGHT,XB(E)::R(C)
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