MESON Chess Problem Database

Problem Display
PID: 203807 (5B2/1bppp1rr/2pkpRpR/8/1PnN1P2/1n4N1/3b1P2/6KB w - - 0 1)

Caine, Walter Edmund

The Problemist, 1954

5B2/1bppp1rr/2pkpRpR/8/1PnN1P2/1n4N1/3b1P2/6KB

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Sb5#
    • 1...g5
      • 2.Sgf5#
      • 2.Sdf5#
  • Tries
    • 1.Rh5?
      • threat
        • 2.Se4#
      • 1...gxh5
        • 2.Sf5#
      • 1...Sc5
        • 2.bxc5#
      • 1...Se5
        • 2.fxe5#
      • 1...c5
        • 2.Sb5#
      • 1...g5
        • 2.Sgf5#
        • 2.Sdf5#
      • 1...Rxh5!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Se4#
      • 1...exf5
        • 2.Sgxf5#
      • 1...gxf5
        • 2.Sxf5#
      • 1...Sc5
        • 2.bxc5#
      • 1...Se5
        • 2.fxe5#
      • 1...c5
        • 2.Sb5#
      • 1...e5
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(d);N_GUARD::S(F)
  • Tries
    • Try
      • R(I);
      • Threat
        • S(D)
      • Vars
        • P(g);N_GUARD,P_PINS(D),XR(I)::S(F)
        • S(b);OGATE::P(E),XS(b)
        • S(c);OGATE::P(G),XS(c)
        • P(d);N_GUARD::S(F)
      • Refutation
        • R(m);XR(I)
  • Actual
    • R(H);N_PINP(f),P_PINP(k)
    • Threat
      • S(D)
    • Vars
      • P(f);N_SPINP(k),P_SPINP(g),XR(H)::S(D),XP(f)
      • P(g);N_SPINP(k),P_PINS(D),P_SPINP(f),XR(H)::S(F),XP(g)
      • S(b);OGATE::P(E),XS(b)
      • S(c);OGATE::P(G),XS(c)
      • P(d);N_GUARD::S(F)
      • P(f);N_SPINP(k),OGATEB,P_SPINP(g)::R(H)
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