MESON Chess Problem Database

Problem Display
PID: 242084 (7Q/4p3/4B3/4r3/3kN3/8/4K3/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

7Q/4p3/4B3/4r3/3kN3/8/4K3/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qh4#
  • Tries
    • 1.Qf6?
      • 1...Kxe4
        • 2.Qh4#
      • 1...exf6!
    • 1.Qd8+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Kxe4!
  • Keys
    • 1.Qg7!
      • 1...Kxe4
        • 2.Qg4#

FEATURES

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