MESON Chess Problem Database

Problem Display
PID: 241962 (8/8/K3p3/N1kbQ3/8/R7/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/8/K3p3/N1kbQ3/8/R7/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qc3#
      • 2.Qd6#
  • Tries
    • 1.Sc4?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Kb4!
    • 1.Sc6?
      • threat
        • 2.Rc3#
      • 1...Kc4
        • 2.Rc3#
        • 2.Qc3#
        • 2.Qd4#
      • 1...Kxc6!
    • 1.Qe3+?
      • 1...Kb4
        • 2.Qc3#
      • 1...Kd6!
  • Keys
    • 1.Sb7+!
      • 1...Kb4
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kc6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(B)::QAR1(C)
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • S(B);
      • Threat
        • R(A)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT,XS(B)
    • Try
      • Q(C);CHECK,N_PINB(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);CHECK
    • Vars
      • K(a);N_SPINB(b),S_FLIGHT::QAB1(C)
      • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
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