MESON Chess Problem Database

Problem Display
PID: 193704 (8/7N/8/5Rq1/2Bk4/1K6/5Pp1/6B1 w - - 0 1)

Marble, Murray

Pittsburgh Gazette-Times, 1915

8/7N/8/5Rq1/2Bk4/1K6/5Pp1/6B1

#2

6 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.f3#
    • 1...Qd8
      • 2.f3#
    • 1...Qg4
      • 2.f3#
    • 1...Qh5
      • 2.f3#
    • 1...Qg6
      • 2.f3#
    • 1...Qg7
      • 2.f3#
    • 1...Qg8
      • 2.f3#
  • Keys
    • 1.Sf6!
      • threat
        • 2.f4#
      • 1...Qe3+
        • 2.fxe3#
      • 1...Qg3+
        • 2.fxg3#
      • 1...Qxf6
        • 2.f3#
      • 1...Qc1
        • 2.Rd5#
      • 1...Qd2
        • 2.Rd5#
      • 1...Qf4
        • 2.Rd5#
      • 1...Qh4
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(c);N_GUARD::B(A)+P(B)
    • Q(c);N_GUARD,P_PINB(D)::B(A)+P(B)
  • Actual
    • S(F);
    • Threat
      • B(A)+P(B)
    • Vars
      • Q(c);CHECK,OGATE::P(B),XQ(c)
      • Q(c);CHECK,OGATE::B(A)+P(B),XQ(c)
      • Q(c);N_GUARD,XS(F)::B(A)+P(B)
      • Q(c);N_GUARD::R1(E)
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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).