MESON Chess Problem Database

Problem Display
PID: 231454 (3N4/2K5/5k1P/7Q/8/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

3N4/2K5/5k1P/7Q/8/8/8/8

#2

4 + 1

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.Qf7#
  • Tries
    • 1.Qd5?
      • 1...Ke7
        • 2.Qf7#
      • 1...Kg6!
    • 1.Qf5+?
      • 1...Ke7
        • 2.Qf7#
      • 1...Kxf5!
  • Keys
    • 1.h7!
      • 1...Ke7
        • 2.Qf7#
      • 1...Kg7
        • 2.h8Q#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • P(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::P=Q
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