MESON Chess Problem Database

Problem Display
PID: 24897 (1b6/p2N4/rpBp3n/1n3N2/RBk5/3p1p1K/r4Q2/qR6 w - - 0 1)

Heathcote, Godfrey

Cork Weekly News, 1915

1b6/p2N4/rpBp3n/1n3N2/RBk5/3p1p1K/r4Q2/qR6

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qxa2#
    • 1...Qe5
      • 2.Qxa2#
    • 1...Qf6
      • 2.Qxa2#
    • 1...Qg7
      • 2.Qxa2#
    • 1...Qh8
      • 2.Qxa2#
    • 1...Sa3
      • 2.Ba5#
    • 1...Sc3
      • 2.Qd4#
    • 1...Sd4
      • 2.Se3#
    • 1...Sc7
      • 2.Sxd6#
    • 1...d2
      • 2.Qf1#
  • Tries
    • 1.Se5+?
      • 1...Qxe5
        • 2.Qxa2#
      • 1...dxe5!
    • 1.Qd4+?
      • 1...Sxd4
        • 2.Se3#
      • 1...Qxd4!
    • 1.Qh4+?
      • 1...Qd4
        • 2.Se3#
      • 1...Sd4
        • 2.Se3#
      • 1...Sg4!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Bd5#
      • 1...Qxf6
        • 2.Qxa2#
      • 1...d2
        • 2.Qf1#
      • 1...Qd4
        • 2.Qxa2#
      • 1...Qe5
        • 2.Qxa2#
      • 1...Sa3
        • 2.Ba5#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sd4
        • 2.Se3#
      • 1...Sc7
        • 2.Sxd6#
      • 1...d5
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_GUARD::QAB(B),XR(b)
    • S(f);S_CUTR(b)::R(D)+B(E)
    • S(f);N_GUARD,S_CUTQ(a)::QAR1(B)
    • S(f);SBLOCK::S(F)
    • S(f);N_GUARD,S_CUTB(l)::S(F),XP(i)
    • P(c);OGATEB::QAB(B)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • Q(a);XS(H)::QAB(B),XR(b)
      • Refutation
        • P(i);XS(H)
    • Try
      • Q(B);CHECK
      • Vars
        • S(f);SBLOCK,XQ(B)::S(F)
      • Refutation
        • Q(a);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • Q(a);P_SPINQ(a)::S(F)
        • S(f);P_SPINS(f)::S(F)
      • Refutation
        • S(j);P_SPINS(j)
  • Actual
    • S(H);
    • Threat
      • B(G)
    • Vars
      • Q(a);N_GUARD,XS(H)::QAB(B),XR(b)
      • P(c);OGATEB::QAB(B)
      • Q(a);N_GUARD::QAB(B),XR(b)
      • S(f);S_CUTR(b)::R(D)+B(E)
      • S(f);N_GUARD,S_CUTQ(a)::QAR1(B)
      • S(f);SBLOCK::S(F)
      • S(f);N_GUARD,S_CUTB(l)::S(F),XP(i)
      • P(i);::B(G),XP(i)
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