MESON Chess Problem Database

Problem Display
PID: 242066 (8/8/K7/N7/1k6/4P3/8/Q7 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

8/8/K7/N7/1k6/4P3/8/Q7

#2

4 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd4#
  • Tries
    • 1.Qc3+?
      • 1...Ka4
        • 2.Qb3#
      • 1...Kxc3!
    • 1.Qd1?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc5
        • 2.Qd4#
      • 1...Kc3!
  • Keys
    • 1.Qb2+!
      • 1...Ka4
        • 2.Qb3#
      • 1...Kc5
        • 2.Qd4#

FEATURES

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