MESON Chess Problem Database

Problem Display
PID: 235690 (8/8/1p6/PN3Q2/k1K5/8/8/2b5 w - - 0 1)

Lincoln, Robert A

Pat a Mat, 2017

8/8/1p6/PN3Q2/k1K5/8/8/2b5

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Sc3#
    • 1...bxa5
      • 2.Qc2#
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qb4#
      • 1...Kxa5
        • 2.Qa8#
      • 1...bxa5
        • 2.Sc3#
      • 1...Bd2
        • 2.Qa3#
      • 1...Ba3
        • 2.Qxa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::S(C)
    • P(c);SBLOCK,XP(B)::QAB(D)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(B)::QAR(D)
      • P(c);SBLOCK,XP(B)::S(C)
      • B(a);N_GUARD::QAR1(D)
      • B(a);N_GUARD::QAR1(D),XB(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).