MESON Chess Problem Database

Problem Display
PID: 187731 (6B1/3p4/1p5K/q4P1p/1p1PkP1R/1n5Q/3P4/8 w - - 0 1)

Kuijers, LA

Chess Weekly, 1909

6B1/3p4/1p5K/q4P1p/1p1PkP1R/1n5Q/3P4/8

#2

8 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qe3#
    • 1...Qe5
      • 2.fxe5#
    • 1...Qxf5
      • 2.Qe3#
    • 1...Sxd4
      • 2.d3#
  • Tries
    • 1.Rxh5?
      • threat
        • 2.Qe3#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Kxf4
        • 2.Rh4#
      • 1...Sxd2!
  • Keys
    • 1.f6!
      • threat
        • 2.f5#
      • 1...Qg5+
        • 2.fxg5#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Sxd4
        • 2.d3#
      • 1...Qe5
        • 2.fxe5#
      • 1...Qf5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT,XP(C)::QAB1(B)
    • Q(d);OGATE::R(E)+P(D),XQ(d)
    • Q(d);SBLOCK,XP(F)::QAR1(B)
    • S(a);SBLOCK,XP(C)::P(A)
  • Tries
    • Try
      • R(E);XP(e)
      • Threat
        • QAR1(B)
      • Vars
        • K(c);P-FLIGHT,XP(C)::QAB1(B)
        • K(c);OGATEB,P-FLIGHT,XP(D)::R(E)
      • Refutation
        • S(a);XP(A)
  • Actual
    • P(F);
    • Threat
      • R(E)+P(D)
    • Vars
      • Q(d);CHECK,OGATE::R(E)+P(D),XQ(d)
      • K(c);P-FLIGHT,XP(C)::QAB1(B)
      • S(a);SBLOCK,XP(C)::P(A)
      • Q(d);OGATE::R(E)+P(D),XQ(d)
      • Q(d);SBLOCK::QAR1(B)
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).