MESON Chess Problem Database

Problem Display
PID: 215836 (8/4k2K/3NP2N/2R5/8/7Q/8/8 w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1992

8/4k2K/3NP2N/2R5/8/7Q/8/8

#2

6 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Sg8#
    • 1...Kd8
      • 2.Qh4#
  • Tries
    • 1.Kg7?
      • 1...Kd8
        • 2.Qh4#
      • 1...Kxd6!
    • 1.Shf5+?
      • 1...Kf6
        • 2.Qh6#
      • 1...Kd8
        • 2.Rc8#
        • 2.Qh4#
      • 1...Kf8
        • 2.Rc8#
        • 2.Qh6#
        • 2.e7#
      • 1...Kxe6!
    • 1.Sg8+?
      • 1...Kd8
        • 2.Rc8#
        • 2.Qh4#
        • 2.e7#
      • 1...Kf8
        • 2.Rf5#
        • 2.Rc8#
        • 2.Qf1#
        • 2.Qf5#
        • 2.Qf3#
        • 2.Qh6#
        • 2.e7#
      • 1...Kxd6!
    • 1.Rc7+?
      • 1...Kf6
        • 2.Qf5#
      • 1...Kd8
        • 2.Rd7#
      • 1...Kf8
        • 2.Rf7#
        • 2.Qf1#
        • 2.Qf5#
        • 2.Qf3#
        • 2.e7#
      • 1...Kxd6!
    • 1.Qg4?
      • 1...Kf6
        • 2.Sg8#
      • 1...Kd8
        • 2.Qh4#
        • 2.Qg5#
      • 1...Kf8
        • 2.Qg7#
      • 1...Kxd6!
    • 1.Qf5?
      • 1...Kd8
        • 2.Qg5#
        • 2.Qf6#
        • 2.Qf8#
      • 1...Kxd6!
  • Keys
    • 1.Qe3!
      • 1...Kxd6
        • 2.Sf5#
      • 1...Kf6
        • 2.Sg8#
      • 1...Kd8
        • 2.Qg5#
      • 1...Kf8
        • 2.e7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(E)
    • K(a);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::R1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::S(E)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT,XS(C)::S(E)
      • K(a);S_FLIGHT::S(E)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);OGATE,S_FLIGHT::P(D)
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