MESON Chess Problem Database

Problem Display
PID: 7088 (4R2Q/8/8/8/5p1K/5kN1/5pN1/8 w - - 0 1)

Raisanen, Jaakko

Comm., Het Belgisch Schaakbord (L'Echiquier Belge), 1998-1999

4R2Q/8/8/8/5p1K/5kN1/5pN1/8

#2

5 + 3

5110 Bekroonde Problemen 2002
422 Suomen Tehtavaniekat 2003

SOLUTION

  • SOUND
  • Tries
    • 1.Re3+?
      • 1...fxe3
        • 2.Qa8#
      • 1...Kxg2!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa8#
      • 1...Kxg2
        • 2.Qh1#
      • 1...f1Q
        • 2.Qxf1#
      • 1...f1S
        • 2.Qxf1#
      • 1...f1B
        • 2.Qxf1#
      • 1...f1R
        • 2.Qxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • P(c);XR(D)::QAB(E)
      • Refutation
        • K(b);S_FLIGHT,XS(A)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(A)::QAB1(E)
      • P(a);OGATEB::QAR2(E),XQ(a)
      • P(a);OGATEB::QAR2(E),XS(a)
      • P(a);OGATEB::QAR2(E),XB(a)
      • P(a);OGATEB::QAR2(E),XR(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).