MESON Chess Problem Database

Problem Display
PID: 241947 (8/2K2PP1/2P1k3/6Q1/6P1/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/2K2PP1/2P1k3/6Q1/6P1/8/8/8

#2

6 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf7
      • 2.g8Q#
  • Tries
    • 1.Kb6?
      • 1...Kxf7
        • 2.g8Q#
      • 1...Kd6!
    • 1.Kb7?
      • 1...Kxf7
        • 2.g8Q#
      • 1...Kd6!
    • 1.Kb8?
      • 1...Kxf7
        • 2.g8Q#
      • 1...Kd6!
    • 1.Kc8?
      • 1...Kxf7
        • 2.g8Q#
      • 1...Kd6!
    • 1.Kd8?
      • 1...Kxf7
        • 2.g8Q#
      • 1...Kd6!
    • 1.Qd8?
      • 1...Kxf7
        • 2.g8Q#
      • 1...Ke5!
  • Keys
    • 1.Qf5+!
      • 1...Ke7
        • 2.f8Q#

FEATURES

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