MESON Chess Problem Database

Problem Display
PID: 18309 (3R4/7b/KNkB4/8/2pp1n1n/8/6N1/7B w - - 0 1)

Sedgwick, Stanley

Time & Tide, 1954

3R4/7b/KNkB4/8/2pp1n1n/8/6N1/7B

#2

6 + 6

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sfg6
      • 2.Sxh4#
    • 1...Sf5
      • 2.Sxf4#
    • 1...Shg6
      • 2.Sxf4#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sb4#
        • 2.Se7#
      • 1...Kxd5
        • 2.Sxf4#
      • 1...Sd3
        • 2.Se7#
      • 1...Sfg6
        • 2.Sb4#
      • 1...Sf5
        • 2.Sb4#
      • 1...Shg6
        • 2.Sb4#
      • 1...Sxd5!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Se7#
      • 1...Kd5
        • 2.Sxf4#
      • 1...Sd5
        • 2.Sa7#
      • 1...Sfg6
        • 2.Sxh4#
      • 1...Sf5
        • 2.Sxf4#
      • 1...Shg6
        • 2.Sxf4#

This anticipates 780(1958)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,S_CUTB(f)::B(A)+S(B),XS(d)
    • S(d);N_GUARD,S_CUTB(f)::B(A)+S(B),XS(c)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT,XS(D)::B(A)+S(B),DCHECK,XS(c)
        • S(c);::S(D)
        • S(d);::S(D)
      • Refutation
        • S(c);XS(D)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(e);S_FLIGHT::B(A)+S(B),DCHECK,XS(c)
      • S(c);SBLOCK::S(D)
      • S(c);N_GUARD,S_CUTB(f)::B(A)+S(B),XS(d)
      • S(d);N_GUARD,S_CUTB(f)::B(A)+S(B),XS(c)
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