MESON Chess Problem Database

Problem Display
PID: 215953 (7Q/3PN3/4k3/7K/2R2P2/8/8/8 w - - 0 1)

Zuncke, Klaus-Peter

Deutsche Schachzeitung, 1979

7Q/3PN3/4k3/7K/2R2P2/8/8/8

#2

6 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc8?
      • 1...Kd5
        • 2.Qg8#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kf7
        • 2.d8S#
      • 1...Kxd7!
    • 1.Rc6+?
      • 1...Kxe7
        • 2.Qe8#
      • 1...Kf7
        • 2.Qf6#
      • 1...Kxd7!
    • 1.Rc7?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kf7
        • 2.d8S#
      • 1...Kxe7!
    • 1.Qe8?
      • threat
        • 2.Rc6#
      • 1...Kd6
        • 2.Rc6#
      • 1...Kf6!
  • Keys
    • 1.Sf5!
      • 1...Kd5
        • 2.Qg8#
      • 1...Kxf5
        • 2.Qe5#
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kf7
        • 2.d8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::QAB(F)
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(E)::QAR1(F)
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(F)
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • Q(F);
      • Threat
        • R(A)
      • Vars
        • K(a);P-FLIGHT::R1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);S_FLIGHT::QAB(F)
      • K(a);S_FLIGHT,XS(E)::QAR1(F)
      • K(a);OGATEB,S_FLIGHT,XP(D)::QAB1(F)
      • K(a);S_FLIGHT::P=S
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