MESON Chess Problem Database

Problem Display
PID: 22274 (1B6/P7/N1p3B1/4P2p/2pk3P/P3NR2/8/4KnQ1 w - - 0 1)

Heathcote, Godfrey

1st Prize, Bristol Mercury, 1890

1B6/P7/N1p3B1/4P2p/2pk3P/P3NR2/8/4KnQ1

#2

11 + 5

187 The Chess Bouquet 1897
15 British Chess Magazine 1910
56 The Problemist 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Sd1#
    • 1...c3
      • 2.Rf4#
  • Tries
    • 1.Sg2+?
      • 1...Kd5
        • 2.Sf4#
      • 1...Se3!
    • 1.Sg4+?
      • 1...Kd5
        • 2.Sc7#
      • 1...Se3!
    • 1.Qf2?
      • 1...Kc3
        • 2.Sd1#
        • 2.Sxf1#
        • 2.Sd5#
      • 1...Sxe3
        • 2.Qd2#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sh2
        • 2.Qd2#
      • 1...Sg3
        • 2.Qd2#
      • 1...c3
        • 2.Rf4#
      • 1...c5!
    • 1.Qxf1?
      • threat
        • 2.Qxc4#
      • 1...c3
        • 2.Qd3#
        • 2.Qc4#
      • 1...Kc3!
    • 1.Qg4+?
      • 1...Kc3
        • 2.Sd1#
      • 1...hxg4!
  • Keys
    • 1.Sc7!
      • 1...Kc3
        • 2.Sd1#
      • 1...Kc5
        • 2.Sxf1#
      • 1...Kxe5
        • 2.Sxc4#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Sd2
        • 2.Sg4#
      • 1...Sh2
        • 2.Sg4#
      • 1...Sg3
        • 2.Sg4#
      • 1...c3
        • 2.Se6#
      • 1...c5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::R(E)+S(D),DCHECK
    • P(b);SBLOCK::R(E)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT::S(D)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT::S(H)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(B);
      • Vars
        • S(a);N_GUARD,P_SPINS(a),XS(D)::QAR2(B)
        • S(a);N_GUARD::QAR2(B),XS(a)
        • S(a);N_GUARD::QAR2(B)
        • P(b);SBLOCK::R(E)
      • Refutation
        • P(e);
    • Try
      • Q(B);XS(a)
      • Threat
        • QAR1(B),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::R(E)+S(D),DCHECK
      • Refutation
        • P(d);XQ(B)
  • Actual
    • S(H);
    • Vars
      • K(c);S_FLIGHT::R(E)+S(D),DCHECK
      • K(c);S_FLIGHT::QAB(B)+S(D),XS(a)
      • K(c);S_FLIGHT,XP(G)::S(D),XP(b)
      • S(a);OGATE,P_SPINS(a),XS(D)::QAB1(B),XS(a)
      • S(a);N_GUARD::QAB(B)+S(D)
      • P(b);SBLOCK::S(H)
      • P(e);N_GUARD,SBLOCK::S(H)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).