MESON Chess Problem Database

Problem Display
PID: 51130 (8/8/P7/kB6/P7/8/nKN2B2/2R5 w - - 0 1)

Lane, JF

Manchester Guardian, 1950

8/8/P7/kB6/P7/8/nKN2B2/2R5

#2

7 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.a7?
      • threat
        • 2.a8Q#
        • 2.a8R#
      • 1...Sxc1
        • 2.a8Q#
        • 2.a8R#
      • 1...Sc3
        • 2.a8Q#
        • 2.a8R#
      • 1...Sb4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc6#
      • 1...Kb4
        • 2.Sc6#
      • 1...Kb6
        • 2.Sb3#
      • 1...Sb4
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(G);
      • Threat
        • P=Q
      • Vars
        • S(a);XR(A)::P=Q
        • S(a);::P=Q
      • Refutation
        • S(a);
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(b);S_FLIGHT::S(C)
      • K(b);S_FLIGHT::B(D)+S(C)
      • S(a);SBLOCK::S(C)
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