MESON Chess Problem Database

Problem Display
PID: 241941 (3Q4/3P4/1r6/k7/P7/K7/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

3Q4/3P4/1r6/k7/P7/K7/8/8

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Qa8#
  • Tries
    • 1.Qg5+?
      • 1...Rb5
        • 2.Qxb5#
      • 1...Ka6!
  • Keys
    • 1.Qa8+!
      • 1...Ra6
        • 2.d8Q#
        • 2.d8B#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINR(b),P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK,N_PINR(b)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(D),XR(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(D);CHECK,N_PINR(b)
    • Vars
      • R(b);P_SPINR(b)::P=Q
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