MESON Chess Problem Database

Problem Display
PID: 242063 (8/8/4p3/7Q/2K1k3/8/6N1/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

8/8/4p3/7Q/2K1k3/8/6N1/8

#2

3 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qg4#
  • Tries
    • 1.Qf3+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kxf3!
    • 1.Qf7?
      • threat
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...e5!
    • 1.Qh3?
      • 1...e5
        • 2.Qg4#
        • 2.Qd3#
      • 1...Ke5!
    • 1.Qg5?
      • threat
        • 2.Qf4#
      • 1...e5
        • 2.Qg4#
      • 1...Kf3!
  • Keys
    • 1.Qg4+!
      • 1...Ke5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(b);SBLOCK::QAR2(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(b);SBLOCK::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);CHECK
    • Vars
      • K(a);P-FLIGHT::QAB1(C)
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