MESON Chess Problem Database

Problem Display
PID: 230702 (8/1N1p2pr/3R1PP1/1np1k3/4Pp2/3P4/1K1B4/8 w - - 0 1)

Collins, Francis Charles

Preston Guardian, 1881

(First published on Wed Dec 21 1881)

8/1N1p2pr/3R1PP1/1np1k3/4Pp2/3P4/1K1B4/8

#2

8 + 7

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Bc3#
    • 1...Sc3
      • 2.Bxc3#
    • 1...Sa7
      • 2.Bc3#
    • 1...Sc7
      • 2.Bc3#
  • Keys
    • 1.Sd8!
      • threat
        • 2.Sf7#
      • 1...Kxd6
        • 2.Bxf4#
      • 1...Sxd6
        • 2.Bc3#
      • 1...gxf6
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::B(B)
    • S(b);N_GUARD::B(B),XS(b)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(d);S_FLIGHT,XR(E)::B(B),XP(a)
      • S(b);N_GUARD,SBLOCK,XR(E)::B(B)
      • P(f);SBLOCK,XP(F)::R1(E)
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