MESON Chess Problem Database

Problem Display
PID: 250213 (1KN1bb2/1pNkPpR1/1r3q2/1P4B1/2Q1n3/8/8/8 w - - 0 1)

ten Cate, Pieter

Western Morning News, 1927

1KN1bb2/1pNkPpR1/1r3q2/1P4B1/2Q1n3/8/8/8

#2

8 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.exf8S#
    • 1...Qb2
      • 2.exf8S#
    • 1...Qc3
      • 2.exf8S#
    • 1...Qd4
      • 2.exf8S#
    • 1...Qe5
      • 2.exf8S#
    • 1...Qf1
      • 2.exf8S#
    • 1...Qf2
      • 2.exf8S#
    • 1...Qf3
      • 2.exf8S#
    • 1...Qf4
      • 2.exf8S#
    • 1...Qf5
      • 2.exf8S#
    • 1...Qc6
      • 2.exf8S#
    • 1...Qe6
      • 2.exf8S#
    • 1...Qg6
      • 2.exf8S#
    • 1...Qh6
      • 2.exf8S#
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qxe8#
      • 1...Qxf7
        • 2.exf8S#
      • 1...Bxf7
        • 2.e8Q#
      • 1...Qg6
        • 2.exf8S#
      • 1...Sd6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 13
  • Sets
    • Q(c);::PXB(h)=S
    • Q(c);P_PINS(D)::PXB(h)=S
  • Actual
    • Q(A);XP(f)
    • Threat
      • QAB1(A),XB(g)
    • Vars
      • Q(c);N_GUARD,S_CUTB(g),XQ(A)::PXB(h)=S
      • B(g);OGATE,XQ(A)::P=Q
      • Q(c);N_GUARD::PXB(h)=S
      • S(a);SBLOCK,S_CUTQ(c)::S(H),XR(b)
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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).