MESON Chess Problem Database

Problem Display
PID: 241795 (6Q1/3N4/8/5k1p/8/5K2/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1929

6Q1/3N4/8/5k1p/8/5K2/8/8

#2

3 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...h4
      • 2.Qg4#
  • Tries
    • 1.Qe6+?
      • 1...Kg5
        • 2.Qf6#
      • 1...Kxe6!
    • 1.Qg1?
      • 1...h4
        • 2.Qg4#
      • 1...Ke6!
    • 1.Qg2?
      • 1...h4
        • 2.Qg4#
      • 1...Ke6!
    • 1.Qg3?
      • 1...h4
        • 2.Qg4#
      • 1...Ke6!
  • Keys
    • 1.Qf7+!
      • 1...Kg5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Vars
        • P(b);N_GUARD::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);N_GUARD::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);N_GUARD::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);CHECK
    • Vars
      • K(a);P-FLIGHT::QAB1(C)
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