MESON Chess Problem Database

Problem Display
PID: 213146 (8/2P5/2N1p3/2k5/P1N1P1Q1/8/8/6K1 w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1990

8/2P5/2N1p3/2k5/P1N1P1Q1/8/8/6K1

#2

7 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.c8Q#
  • Tries
    • 1.Qe2?
      • 1...Kxc6
        • 2.c8Q#
      • 1...e5!
    • 1.Qg2?
      • 1...Kxc4
        • 2.Qc2#
      • 1...Kxc6
        • 2.c8Q#
      • 1...e5!
    • 1.Qg8?
      • 1...Kxc6
        • 2.c8Q#
      • 1...e5
        • 2.Qd5#
      • 1...Kxc4!
  • Keys
    • 1.Qd1!
      • 1...Kxc4
        • 2.Qc2#
      • 1...Kxc6
        • 2.c8Q#
      • 1...e5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XS(F)::P=Q
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT,XS(F)::P=Q
      • Refutation
        • P(b);
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(C)::QAR2(E)
        • K(a);P-FLIGHT,XS(F)::P=Q
      • Refutation
        • P(b);
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT,XS(F)::P=Q
        • P(b);OGATE::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XS(C)
  • Actual
    • Q(E);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(C)::QAR2(E)
      • K(a);P-FLIGHT,XS(F)::P=Q
      • P(b);N_GUARD::QAR1(E)
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