MESON Chess Problem Database

Problem Display
PID: 251408 (8/5p2/7p/1Q2pK1k/2p2p1r/7P/B2R4/5N2 w - - 0 1)

Uris, Miguel

Zaragoza, Luis

Problemas, 2021

8/5p2/7p/1Q2pK1k/2p2p1r/7P/B2R4/5N2

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Bxf7#
    • 1...f3
      • 2.Sg3#
    • 1...e4
      • 2.Kf6#
    • 1...f6
      • 2.Qe8#
  • Tries
    • 1.Rd3?
      • 1...Rxh3
        • 2.Rxh3#
      • 1...cxd3
        • 2.Bxf7#
      • 1...c3
        • 2.Bxf7#
      • 1...f3
        • 2.Sg3#
      • 1...e4
        • 2.Kf6#
      • 1...f6
        • 2.Qe8#
      • 1...Rg4!
  • Keys
    • 1.Rh2!
      • 1...Rxh3
        • 2.Rxh3#
      • 1...Rg4
        • 2.hxg4#
      • 1...c3
        • 2.Bxf7#
      • 1...f3
        • 2.Sg3#
      • 1...e4
        • 2.Kf6#
      • 1...f6
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::B(B),XP(g)
    • P(b);N_GUARD::S(A)
    • P(d);::QAR(E)+K(F)
    • P(g);OGATEB::QAB(E)
  • Tries
    • Try
      • R(C);
      • Vars
        • R(c);OGATE,XP(D)::R(C),XR(c)
        • P(a);OGATE,XR(C)::B(B),XP(g)
        • P(a);OGATE::B(B),XP(g)
        • P(b);N_GUARD::S(A)
        • P(d);::QAR(E)+K(F)
        • P(g);OGATEB::QAB(E)
      • Refutation
        • R(c);
  • Actual
    • R(C);
    • Vars
      • R(c);OGATE,P_SPINR(c),XP(D)::R(C),XR(c)
      • R(c);OGATE::R(C)+P(D)DCHECK,XR(c)
      • P(a);OGATE::B(B),XP(g)
      • P(b);N_GUARD::S(A)
      • P(d);::QAR(E)+K(F)
      • P(g);OGATEB::QAB(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).