MESON Chess Problem Database

Problem Display
PID: 270966 (1K1R4/1PpNnnBB/2r5/1Q3r2/R2qk3/3N3b/3PP3/b7 w - - 0 1)

Santiago, Joao Baptista

Probleemblad, 1951

1K1R4/1PpNnnBB/2r5/1Q3r2/R2qk3/3N3b/3PP3/b7

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sf6#
    • 1...Rc2
      • 2.Sf6#
    • 1...Rc3
      • 2.Sf6#
      • 2.Rxd4#
    • 1...Rc5
      • 2.S7xc5#
      • 2.Sf6#
    • 1...Ra6
      • 2.S7c5#
    • 1...Rb6
      • 2.S7c5#
    • 1...Re6
      • 2.S7c5#
    • 1...Rf6
      • 2.S7c5#
      • 2.Sxf6#
    • 1...Rh6
      • 2.S7c5#
    • 1...Sc8
      • 2.Qxc6#
    • 1...Sg8
      • 2.Qxc6#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sg5
      • 2.Qe5#
    • 1...Sd6
      • 2.Sf6#
      • 2.Qe5#
    • 1...Sh6
      • 2.Qe5#
    • 1...Sxd8
      • 2.Qe5#
    • 1...Sh8
      • 2.Qe5#
  • Tries
    • 1.Bxf5+?
      • 1...Sxf5
        • 2.Qxc6#
      • 1...Bxf5!
    • 1.Qxc6+?
      • 1...Sd5
        • 2.S7c5#
        • 2.Sf6#
      • 1...Sxc6+!
  • Keys
    • 1.Be5!
      • threat
        • 2.Sf2#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Rc5
        • 2.S7xc5#
        • 2.Sf6#
      • 1...Rc4
        • 2.Sf6#
      • 1...Rg6
        • 2.S7c5#
      • 1...Sg6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 12
  • Sets
    • R(f);N_GUARD::S(G)
    • R(f);N_GUARD,P_PINP(F)::S(G)
    • S(h);N_GUARD::QAB(E),XR(f)
    • S(i);N_GUARD::QAR1(E),XS(i)
    • S(i);N_GUARD::QAR1(E)
    • S(i);N_GUARD,XR(K)::QAR1(E)
  • Tries
    • Try
      • B(I);CHECK,XR(e)
      • Vars
        • S(h);SBLOCK,XB(I)::QAB(E),XR(f)
      • Refutation
        • B(b);XB(I)
    • Try
      • Q(E);CHECK,XR(f)
      • Refutation
        • S(h);CHECK,XQ(E)
  • Actual
    • B(H);
    • Threat
      • S(C)
    • Vars
      • S(i);OGATE,XB(H)::QAR1(E),XS(i)
      • R(f);N_GUARD,N_SPINQ(c)::S(G)
      • R(f);N_GUARD,N_SPINR(e)::S(G)
      • S(h);N_GUARD,N_SPINR(e)::QAB(E),XR(f)
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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).