MESON Chess Problem Database

Problem Display
PID: 20876 (K1bb4/1p3r2/pR6/Q1p2kp1/3PN3/7P/7B/1Bq1r3 w - - 0 1)

Heathcote, Godfrey

4th Prize, Brisbane Courier, 1913

K1bb4/1p3r2/pR6/Q1p2kp1/3PN3/7P/7B/1Bq1r3

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Qxc5#
    • 1...Qd2
      • 2.Qxc5#
    • 1...Qe3
      • 2.Qxc5#
    • 1...Qf4
      • 2.Sg3#
    • 1...Qd1
      • 2.Qxc5#
    • 1...Re7
      • 2.Rf6#
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qd5#
      • 1...Bxb6
        • 2.Qxf7#
      • 1...Rf6
        • 2.Sd6#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bf6
        • 2.Sd6#
      • 1...Qf4
        • 2.Sg3#
      • 1...Qc4
        • 2.Qf2#
      • 1...Rd7
        • 2.Qe6#
      • 1...Re7
        • 2.Rf6#
      • 1...Bc7
        • 2.Qxf7#
      • 1...c4
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::QAR(F),XP(c)
    • Q(a);SBLOCK::B(A)+S(E),DCHECK
    • R(h);N_GUARD,S_CUTB(j)::R1(G)
  • Actual
    • Q(F);N_PINP(c)
    • Threat
      • QAR2(F)
    • Vars
      • B(j);N_GUARD,XR(G)::QAR2(F),XR(h)
      • R(h);SBLOCK::B(A)+S(E),DCHECK
      • B(i);N_GUARD::QAB1(F),XB(i)
      • B(j);SBLOCK::B(A)+S(E),DCHECK
      • Q(a);SBLOCK::B(A)+S(E),DCHECK
      • Q(a);N_GUARD::QAR(F)
      • R(h);S_CUTB(i)::QAB1(F)
      • R(h);N_GUARD,S_CUTB(j)::R1(G)
      • B(j);N_GUARD::QAR2(F),XR(h)
      • P(c);OGATEB::QAR(F)
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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).