MESON Chess Problem Database

Problem Display
PID: 210142 (7R/1p1N1p2/1P1p1P2/3k4/P2P2P1/P2R2P1/3K4/3N4 w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1988

7R/1p1N1p2/1P1p1P2/3k4/P2P2P1/P2R2P1/3K4/3N4

#2

12 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se3#
    • 1...Ke4
      • 2.Sc3#
  • Tries
    • 1.Sb8?
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
    • 1.Sf8?
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6!
    • 1.Rc8?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
    • 1.Re8?
      • 1...Kc4
        • 2.Se3#
      • 1...Kc6!
  • Keys
    • 1.Rd8!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.d5#
      • 1...Ke6
        • 2.d5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(A)
  • Tries
    • Try
      • S(K);
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(K);
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(L);
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(L);
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(L);
    • Vars
      • K(a);S_FLIGHT::S(A)
      • K(a);OGATE,S_FLIGHT::P(G)
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