MESON Chess Problem Database

Problem Display
PID: 242030 (Q7/8/3Pk1K1/8/4N3/3N4/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

Q7/8/3Pk1K1/8/4N3/3N4/8/8

#2

5 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Sdc5#
  • Tries
    • 1.Kg5?
      • 1...Kd7
        • 2.Sdc5#
      • 1...Kf7!
    • 1.Kh5?
      • 1...Kf5
        • 2.Qd5#
      • 1...Kd7
        • 2.Sdc5#
      • 1...Kf7!
    • 1.Kg7?
      • 1...Kd7
        • 2.Sdc5#
      • 1...Kf5!
    • 1.Kh7?
      • 1...Kd7
        • 2.Sdc5#
      • 1...Kf7
        • 2.Qg8#
      • 1...Kf5!
    • 1.d7?
      • 1...Ke7
        • 2.Qe8#
      • 1...Kxd7!
  • Keys
    • 1.Qg8+!
      • 1...Kd7
        • 2.Se5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(A)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
  • Actual
    • Q(E);CHECK
    • Vars
      • K(a);S_FLIGHT::S(A)
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