MESON Chess Problem Database

Problem Display
PID: 241908 (2N5/8/2p5/2P1k1K1/8/3Q4/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

2N5/8/2p5/2P1k1K1/8/3Q4/8/8

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qf5#
  • Tries
    • 1.Kg4?
      • 1...Ke6
        • 2.Qf5#
      • 1...Kf6!
    • 1.Kg6?
      • 1...Ke6
        • 2.Qf5#
        • 2.Qd6#
      • 1...Kf4!
    • 1.Qf3?
      • 1...Ke6
        • 2.Qf5#
      • 1...Kd4!
  • Keys
    • 1.Qe3+!
      • 1...Kd5
        • 2.Sb6#

FEATURES

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