MESON Chess Problem Database

Problem Display
PID: 233246 (1n6/6Q1/8/3p4/2kN4/3N4/1K6/3R4 w - - 0 1)

Muller, Dieter

Freie Presse, 1969

1n6/6Q1/8/3p4/2kN4/3N4/1K6/3R4

#2

5 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qa7?
      • threat
        • 2.Qc5#
        • 2.Qa4#
      • 1...Sc6
        • 2.Qc5#
      • 1...Sd7
        • 2.Qa4#
      • 1...Sa6!
    • 1.Qc7+?
      • 1...Kxd4
        • 2.Qf4#
      • 1...Sc6!
    • 1.Qe7?
      • threat
        • 2.Se5#
        • 2.Qb4#
        • 2.Qc5#
      • 1...Sa6
        • 2.Se5#
      • 1...Sc6
        • 2.Qc5#
      • 1...Sd7
        • 2.Qb4#
      • 1...Kxd4!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Se5#
        • 2.Qb4#
        • 2.Qc5#
      • 1...Kxd4
        • 2.Qf4#
      • 1...Sa6
        • 2.Se5#
      • 1...Sc6
        • 2.Qc5#
      • 1...Sd7
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAR1(E)
        • S(c);::QAR2(E)
      • Refutation
        • S(c);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR2(E)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::S(C)
        • S(c);::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XS(D)
  • Actual
    • Q(E);
    • Threat
      • DUALS(3)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(D)::QAR2(E)
      • S(c);::S(C)
      • S(c);::QAR1(E)
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