MESON Chess Problem Database

Problem Display
PID: 242051 (8/8/1Q4p1/4k1K1/2P5/8/3P4/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

8/8/1Q4p1/4k1K1/2P5/8/3P4/8

#2

4 + 2

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe3#
  • Tries
    • 1.Kg4?
      • 1...Ke4
        • 2.Qe3#
      • 1...g5!
    • 1.Kxg6?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf4!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Qe3#
        • 2.Qd5#
      • 1...Ke6!
    • 1.Qd8?
      • threat
        • 2.Qd5#
      • 1...Ke4
        • 2.Qd5#
      • 1...Ke6!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Qd5#
      • 1...Kxd6!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxe6!
  • Keys
    • 1.Qc6!
      • 1...Kd4
        • 2.Qd5#

Anticipated by 227466(1926), 241914(1933), 241973(1933)

This anticipates 120872(1978-1981)

FEATURES

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