MESON Chess Problem Database

Problem Display
PID: 96313 (N1B4r/1n1R2P1/b1n1k1p1/3R3N/2r4p/6bK/1q2p1Q1/8 w - - 0 1)

Cabral, Renato

Problem (Zagreb), 1954

N1B4r/1n1R2P1/b1n1k1p1/3R3N/2r4p/6bK/1q2p1Q1/8

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Sc7#
    • 1...Rh6
      • 2.Rxb7#
      • 2.Rc7#
      • 2.g8Q#
      • 2.g8B#
    • 1...Rh7
      • 2.Rxb7#
      • 2.Rc7#
    • 1...Rf8
      • 2.gxf8S#
    • 1...Be1
      • 2.Sc7#
    • 1...Bf2
      • 2.Sc7#
    • 1...Bf4
      • 2.Qg4#
    • 1...Bc7
      • 2.Sxc7#
    • 1...Scd8
      • 2.Rc7#
    • 1...Sd6
      • 2.Sc7#
    • 1...Sbd8
      • 2.Rb7#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qf7#
      • 1...Qxg7
        • 2.Sxg7#
      • 1...Qf6
        • 2.Qxf6#
      • 1...Rf4
        • 2.Sc7#
      • 1...Rf8
        • 2.gxf8S#
      • 1...Bf4
        • 2.Qg4#
      • 1...Se5
        • 2.Qf6#
      • 1...Se7
        • 2.R7d6#
      • 1...Scd8
        • 2.Rc7#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sbd8
        • 2.Rb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(d);S_CUTB(c)::S(G)
    • R(k);OGATE::PXR(k)=S
    • B(c);N_GUARD::S(G)
    • B(c);OGATE::QAB(A)
    • B(c);N_GUARD::S(G),XB(c)
    • S(g);S_CUTR(k)::B(H)+R(E)
    • S(j);S_CUTB(c)::S(G)
    • S(j);S_CUTR(k)::B(H)+R(E)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • Q(a);XP(F)::S(D),XQ(a)
      • Q(a);N_GUARD::QAR1(A),XQ(a)
      • R(d);S_CUTB(c)::S(G)
      • R(k);OGATE::PXR(k)=S
      • B(c);S_CUTR(d)::QAB(A)
      • S(g);S_CUTQ(a)::QAR1(A)
      • S(g);SBLOCK::B(H)+R(E),DCHECK
      • S(g);S_CUTR(k)::B(H)+R(E)
      • S(j);S_CUTB(c)::S(G)
      • S(j);S_CUTR(k)::B(H)+R(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).