MESON Chess Problem Database

Problem Display
PID: 181909 (1K6/8/8/1ppkp3/1PR1N3/2p5/4QN2/B6B w - - 0 1)

Dobbs, Gilbert S

San Francisco Chronicle, 1905

1K6/8/8/1ppkp3/1PR1N3/2p5/4QN2/B6B

#2

8 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc5+?
      • 1...Kd4
        • 2.Bxc3#
        • 2.Qd3#
        • 2.Qd2#
      • 1...Ke6!
    • 1.Qd3+?
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6!
  • Keys
    • 1.Qg4!
      • 1...Kxc4
        • 2.Sd2#
      • 1...Kc6
        • 2.Qe6#
      • 1...bxc4
        • 2.Qd7#
      • 1...cxb4
        • 2.Qg8#
      • 1...c2
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK,XP(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);OGATE,P_SPINP(c),S_FLIGHT::QAR1(C)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(d);S_FLIGHT,XR(F)::QAR(C)+S(G),DCHECK
      • K(d);P_SPINP(c),S_FLIGHT::QAR2(C)
      • P(b);SBLOCK,XR(F)::QAR2(C)
      • P(c);XP(E)::QAB(C)
      • P(a);::R1(F),XP(c)
HTML5 logo

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).