MESON Chess Problem Database

Problem Display
PID: 180243 (K3Br2/4kPR1/4NpQ1/8/3N4/8/7P/6B1 w - - 0 1)

Lider, Valentin Viktorovich

Problem (Zagreb), 1976

K3Br2/4kPR1/4NpQ1/8/3N4/8/7P/6B1

#2

9 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe8+
      • 2.fxe8S#
    • 1...Rg8
      • 2.f8Q#
      • 2.f8B#
    • 1...Rh8
      • 2.f8Q#
      • 2.f8B#
    • 1...f5
      • 2.Sxf5#
  • Keys
    • 1.Sb5!
      • 1...Rxe8+
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Kxe6
        • 2.Qe4#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Rg8
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Rh8
        • 2.f8S#
      • 1...f5
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);CHECK,OGATE,XB(I)::PXR(c)=S
    • R(c);OGATE::P=Q
    • P(a);::S(C),XP(a)
  • Actual
    • S(C);
    • Vars
      • R(c);CHECK,OGATE,XB(I)::PXR(c)=Q
      • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XS(D)::QAR2(E)
      • R(c);N_PINB(I),OGATE,P_SPINR(c),XP(F)::QAR1(E),XR(c)
      • R(c);OGATE::PXR(c)=Q
      • R(c);OGATE::P=S
      • P(a);::B(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).