MESON Chess Problem Database

Problem Display
PID: 241971 (8/8/Q7/8/3p4/Pk1P4/8/1K1R4 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/8/Q7/8/3p4/Pk1P4/8/1K1R4

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qc4#
  • Tries
    • 1.Ka1?
      • 1...Kc3
        • 2.Qc4#
      • 1...Kc2!
    • 1.Kc1?
      • 1...Kc3
        • 2.Qc4#
      • 1...Ka2!
    • 1.Qb5+?
      • 1...Kc3
        • 2.Qc4#
        • 2.Qb2#
        • 2.Qb4#
      • 1...Kxa3!
    • 1.Qb7+?
      • 1...Kc3
        • 2.Qb2#
        • 2.Qb4#
      • 1...Ka4
        • 2.Qb4#
      • 1...Kxa3!
    • 1.Qa4+?
      • 1...Kc3
        • 2.Qc2#
        • 2.Qb4#
        • 2.Qc4#
      • 1...Kxa4!
    • 1.Qb6+?
      • 1...Kc3
        • 2.Qb2#
        • 2.Qb4#
      • 1...Ka4
        • 2.Qb4#
      • 1...Kxa3!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qb4#
      • 1...Kc3
        • 2.Qb4#
      • 1...Ka4
        • 2.Qb4#

FEATURES

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