MESON Chess Problem Database

Problem Display
PID: 57174 (5bK1/r1p5/p1p5/1n5R/1nkP4/p4N1R/b1p1P3/2N1B2Q w - - 0 1)

Shire, David J

Problem Observer, 2005

5bK1/r1p5/p1p5/1n5R/1nkP4/p4N1R/b1p1P3/2N1B2Q

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Rxc5#
    • 1...Bh6
      • 2.Rc5#
    • 1...Bg7
      • 2.Rc5#
    • 1...Sd3
      • 2.exd3#
    • 1...Sxd4
      • 2.Sd2#
    • 1...Sd6
      • 2.Rc5#
  • Tries
    • 1.R3h4?
      • threat
        • 2.Se5#
      • 1...Sxd4
        • 2.Rxd4#
      • 1...Bg7
        • 2.Rc5#
      • 1...Sd3
        • 2.exd3#
      • 1...Sc3
        • 2.Sd2#
      • 1...Sd6
        • 2.Rc5#
      • 1...Bd6!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Sd2#
      • 1...Bh6
        • 2.Rc5#
      • 1...Sd3
        • 2.exd3#
      • 1...Sd5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(k);N_GUARD::R1(H),XB(k)
    • B(k);N_GUARD::R1(H)
    • S(d);OGATE::P(D),XS(d)
    • S(f);SBLOCK,XP(G)::S(E)
    • S(f);S_CUTB(k)::R1(H)
  • Tries
    • Try
      • R(F);
      • Threat
        • S(E)
      • Vars
        • S(f);OGATE,P_SPINS(f),XP(G)::R1(F),XS(f)
        • B(k);N_GUARD::R1(H)
        • S(d);OGATE::P(D),XS(d)
        • S(f);SBLOCK::S(E)
        • S(f);S_CUTB(k)::R1(H)
      • Refutation
        • B(k);
  • Actual
    • Q(C);
    • Threat
      • S(E)
    • Vars
      • B(k);N_GUARD::R1(H)
      • S(d);OGATE::P(D),XS(d)
      • S(d);SBLOCK::S(E)
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