MESON Chess Problem Database

Problem Display
PID: 167384 (6bq/8/4BN1P/6kP/3Q3p/4R1pr/1K2P3/8 w - - 0 1)

Dobbs, Gilbert S

Tidskrift for Schack, 1914

6bq/8/4BN1P/6kP/3Q3p/4R1pr/1K2P3/8

#2

8 + 6

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh6
      • 2.Qe5#
  • Tries
    • 1.Qg4+?
      • 1...Kxh6
        • 2.Qg6#
      • 1...Kxf6!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Rf3#
        • 2.Re4#
        • 2.Qe5#
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Rf3#
      • 1...Qxf6+
        • 2.Re5#
      • 1...Kf4
        • 2.Re4#
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6
        • 2.Rxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(f);SBLOCK,XP(H)::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK,P_SPINS(G)
      • Vars
        • K(d);OGATE,S_FLIGHT,XP(H)::QAR1(D)
      • Refutation
        • K(d);S_FLIGHT,XS(G)
    • Try
      • Q(D);CHECK,P_SPINS(G)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(G)::QAB(D)
      • Refutation
        • K(d);S_FLIGHT,XP(H)
  • Actual
    • Q(D);P_SPINS(G)
    • Threat
      • QAB(D)+R(C)
    • Vars
      • Q(f);CHECK,SBLOCK,XS(G)::QAB(D)+R(C),DCHECK
      • K(d);S_FLIGHT::QAB(D)+R(C),DCHECK
      • K(d);OGATEB,S_FLIGHT,XS(G)::QAB(D)
      • K(d);S_FLIGHT,XP(H)::QAB(D)+R(C),XP(a)
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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).