MESON Chess Problem Database

Problem Display
PID: 241942 (8/8/P7/kN6/2K1p3/4Q3/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/8/P7/kN6/2K1p3/4Q3/8/8

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qa3#
    • 1...Kxa6
      • 2.Qa7#
  • Tries
    • 1.Kc5?
      • threat
        • 2.Qa3#
      • 1...Ka4
        • 2.Qa3#
      • 1...Kxa6!
    • 1.Qg1?
      • 1...Ka4
        • 2.Qa1#
      • 1...Kxa6
        • 2.Qa7#
      • 1...e3!
    • 1.Qf2?
      • 1...Ka4
        • 2.Qa2#
      • 1...Kxa6
        • 2.Qa7#
      • 1...e3!
    • 1.Qd4?
      • 1...Ka4
        • 2.Qa1#
      • 1...Kxa6
        • 2.Qa7#
      • 1...e3!
    • 1.Qc5?
      • 1...Ka4
        • 2.Sc3#
        • 2.Qa3#
        • 2.Qb4#
      • 1...Kxa6
        • 2.Qa7#
      • 1...e3!
  • Keys
    • 1.a7!
      • threat
        • 2.a8Q#
        • 2.a8R#
      • 1...Ka4
        • 2.Qa3#
        • 2.a8Q#
        • 2.a8R#
      • 1...Ka6
        • 2.a8Q#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR1(A)
    • K(b);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR(A)
        • K(b);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • K(b);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR(A)
        • K(b);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • P(a);
  • Actual
    • P(D);
    • Threat
      • P=Q
    • Vars
      • K(b);P-FLIGHT::P=Q
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