MESON Chess Problem Database

Problem Display
PID: 215952 (8/3Q4/2N2P2/6k1/8/5B2/6NK/8 w - - 0 1)

Zagler, Ludwig

Deutsche Schachzeitung, 1975

8/3Q4/2N2P2/6k1/8/5B2/6NK/8

#2

6 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Qg7#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qg7#
      • 1...Kg6
        • 2.Qg7#
      • 1...Kh6
        • 2.Qg7#
      • 1...Kxf6!
    • 1.Se5?
      • 1...Kh6
        • 2.Qg7#
      • 1...Kxf6!
    • 1.Bg4?
      • threat
        • 2.Qg7#
      • 1...Kg6
        • 2.Qg7#
      • 1...Kh6
        • 2.Qg7#
      • 1...Kxf6!
    • 1.Qg4+?
      • 1...Kh6
        • 2.Qh5#
        • 2.Qg7#
      • 1...Kxf6!
    • 1.Qf5+?
      • 1...Kh6
        • 2.Qh5#
      • 1...Kxf5!
    • 1.Qf7?
      • 1...Kh6
        • 2.Qh5#
        • 2.Qg7#
      • 1...Kf5!
  • Keys
    • 1.Sh4!
      • 1...Kf4
        • 2.Qd2#
      • 1...Kxh4
        • 2.Qg4#
      • 1...Kxf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(F)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR2(F)
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • B(C);
      • Threat
        • QAR2(F)
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT,XQ(F)
    • Try
      • Q(F);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT::QAB(F)
      • K(a);S_FLIGHT,XS(A)::QAR1(F)
      • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(F)
      • K(a);S_FLIGHT::QAB1(F)
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