MESON Chess Problem Database

Problem Display
PID: 9447 (b2Q4/B7/1n4N1/1B6/pPpNk3/3p4/1P3P2/7K w - - 0 1)

Heathcote, Godfrey

1st Prize, Kingstown Society, 1903

b2Q4/B7/1n4N1/1B6/pPpNk3/3p4/1P3P2/7K

#2

9 + 6

2794 Terms & Themes of Chess Problems 1907
756 Norsk Sjakkblad 1919

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qh4#
    • 1...Sd7
      • 2.Qxa8#
  • Tries
    • 1.Bxc4?
      • threat
        • 2.Qh4#
      • 1...Sxc4
        • 2.Qxa8#
      • 1...Sd5!
    • 1.Bc6+?
      • 1...Sd5
        • 2.Qh4#
        • 2.Qe7#
        • 2.Qxd5#
        • 2.Qe8#
      • 1...Bxc6!
    • 1.Qf6?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Sd7
        • 2.Qf3#
        • 2.Qf5#
      • 1...d2!
    • 1.Qe7+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kxd4+!
    • 1.Qxa8+?
      • 1...Kxd4
        • 2.Bxb6#
      • 1...Sxa8
        • 2.Bc6#
      • 1...Sd5!
    • 1.Qe8+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kxd4+!
    • 1.Qh8?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Sd7
        • 2.Qxa8#
      • 1...d2!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Bf5#
      • 1...Kxd4+
        • 2.Bc6#
      • 1...Kd5
        • 2.Bc6#
      • 1...Sxd7
        • 2.Qxa8#
      • 1...Bd5
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK::QAR(I)
    • S(e);N_GUARD::QAB(I),XB(f)
  • Tries
    • Try
      • B(F);XP(c)
      • Threat
        • QAR(I)
      • Vars
        • S(e);N_GUARD,XB(F)::QAB(I),XB(f)
      • Refutation
        • S(e);
    • Try
      • B(F);CHECK
      • Refutation
        • B(f);XB(F)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • K(d);S_FLIGHT::QAR1(I)
      • Refutation
        • P(a);
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(I)
      • Refutation
        • K(d);CHECK,P-FLIGHT,P_SPINS(e),XS(E)
    • Try
      • Q(I);CHECK,XB(f)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(e),XS(E)::B(H),XS(e)
        • S(e);N_GUARD,XQ(I)::B(F)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(I)
      • Refutation
        • K(d);CHECK,P-FLIGHT,P_SPINS(e),XS(E)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • K(d);S_FLIGHT::QAR1(I)
        • S(e);N_GUARD::QAB(I),XB(f)
      • Refutation
        • P(a);
  • Actual
    • B(F);
    • Threat
      • B(F)
    • Vars
      • K(d);CHECK,P-FLIGHT,P_SPINS(e),XS(E)::QAR(I)+B(F)
      • K(d);S_FLIGHT::QAR(I)+B(F),DCHECK
      • S(e);N_GUARD,XB(F)::QAB(I),XB(f)
      • B(f);SBLOCK::QAR(I)
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