MESON Chess Problem Database

Problem Display
PID: 16385 (4nn1k/1R5P/5b2/4N2R/8/8/K7/8 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

Fifty Two-Move Problems, 1940

4nn1k/1R5P/5b2/4N2R/8/8/K7/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7
      • 2.Sf7#
    • 1...Sg7
      • 2.Sf7#
    • 1...Se6
      • 2.Sg6#
    • 1...Sg6
      • 2.Sxg6#
  • Keys
    • 1.Rg7!
      • threat
        • 2.Rg8#
      • 1...Kxg7
        • 2.h8Q#
      • 1...Bxg7
        • 2.Sf7#
      • 1...Sxg7
        • 2.Sf7#
      • 1...Sxh7
        • 2.Rhxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK::S(B)
    • S(b);SBLOCK::S(B)
    • S(c);N_GUARD::S(B)
    • S(c);N_GUARD::S(B),XS(c)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(d);OGATE,S_FLIGHT,XR(D)::P=Q
      • B(a);SBLOCK,XR(D)::S(B)
      • S(b);SBLOCK,XR(D)::S(B)
      • S(c);OGATE,P_SPINS(c),XP(E)::R1(C),XS(c)
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