MESON Chess Problem Database

Problem Display
PID: 19260 (7Q/2K1p3/N1B5/8/n1kN4/r7/2pPP3/n1b5 w - - 0 1)

Heathcote, Godfrey

HM., Sydsvenska Dagbladet Snallposten, 1909

7Q/2K1p3/N1B5/8/n1kN4/r7/2pPP3/n1b5

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.d3#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Bb5#
        • 2.Bd5#
        • 2.Qd5#
      • 1...Rb3
        • 2.Bd5#
        • 2.Qd5#
      • 1...Sc3
        • 2.Qc5#
        • 2.d3#
      • 1...Sb6
        • 2.Bb5#
        • 2.Qc5#
      • 1...e6
        • 2.Bb5#
      • 1...Bxd2!
    • 1.Qd8?
      • threat
        • 2.Bb5#
        • 2.Qd5#
      • 1...Rb3
        • 2.Qd5#
      • 1...Sc3
        • 2.d3#
      • 1...Sb6
        • 2.Bb5#
      • 1...e6
        • 2.Bb5#
      • 1...Bxd2!
    • 1.Qg8+?
      • 1...Kxd4
        • 2.Qd5#
      • 1...e6!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sa5#
      • 1...Kxb3
        • 2.Bd5#
      • 1...Rxb3
        • 2.Qh4#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Sxb3
        • 2.d3#
      • 1...Sb2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc5
        • 2.Qc3#
      • 1...Sb6
        • 2.Qc3#
      • 1...e5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK,S_CUTR(d)::P(A)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • P(g);::B(E)
      • Refutation
        • B(b);XP(A)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::QAB1(G)
        • S(e);SBLOCK,S_CUTR(d)::P(A)
        • S(e);::B(E)
        • P(g);::B(E)
      • Refutation
        • B(b);XP(A)
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);P-FLIGHT,XS(C)::QAR1(G)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(f);S_FLIGHT,XS(C)::B(E)
      • R(d);SBLOCK,XS(C)::QAR(G)
      • B(b);XP(A)::S(C),XB(b)
      • S(a);SBLOCK,XS(C)::P(A)
      • S(e);N_GUARD::QAR1(G)
      • S(e);N_GUARD::QAR1(G),XS(e)
      • P(g);N_GUARD::QAB(G)
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