MESON Chess Problem Database

Problem Display
PID: 265623 (b7/5R2/1N2nbq1/4R1p1/1r2pkB1/BpQ2Pr1/1KnP1N1P/8 w - - 0 1)

Parcerisa, Jose Antonio Lopez

Candela MT (Problemas), 2018

b7/5R2/1N2nbq1/4R1p1/1r2pkB1/BpQ2Pr1/1KnP1N1P/8

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Rxf5#
    • 1...Qh5
      • 2.Rf5#
      • 2.Rxf6#
    • 1...Qxf7
      • 2.Rf5#
    • 1...Qh6
      • 2.Rf5#
    • 1...Qg7
      • 2.Rf5#
    • 1...Qg8
      • 2.Rf5#
      • 2.Rxf6#
    • 1...Rg1
      • 2.Sh3#
    • 1...Rg2
      • 2.Sh3#
    • 1...Rh3
      • 2.Sxh3#
    • 1...Rxg4
      • 2.Sh3#
    • 1...Bd5
      • 2.Sxd5#
    • 1...Se3
      • 2.dxe3#
  • Tries
    • 1.Rxf6+?
      • 1...Qf5
        • 2.Rexf5#
        • 2.Rfxf5#
      • 1...Qxf6!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qe5#
      • 1...Qxf7
        • 2.Rf5#
      • 1...Rxg4
        • 2.Sh3#
      • 1...Bxd5
        • 2.Sxd5#
      • 1...Rd4
        • 2.Bd6#
      • 1...Qf5
        • 2.Rxf5#
      • 1...Scd4
        • 2.Qe3#
      • 1...Sed4
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(j);N_GUARD,N_SPINB(i)::R1(I),XQ(j)
    • Q(j);N_GUARD,N_SPINB(i),XR(K)::R1(I)
    • Q(j);N_GUARD::R1(I)
    • R(c);N_GUARD::S(C)
    • R(c);N_GUARD::S(C),XR(c)
    • R(c);N_GUARD,XB(H)::S(C)
    • B(k);N_GUARD::S(J),XB(k)
    • S(a);OGATE::P(B),XS(a)
  • Tries
    • Try
      • R(K);CHECK,XB(i)
      • Refutation
        • Q(j);XR(K)
  • Actual
    • R(I);P_SPINQ(F)
    • Threat
      • QAB1(F)
    • Vars
      • Q(j);N_GUARD,N_SPINB(i),XR(K)::R1(I)
      • R(c);N_GUARD,XB(H)::S(C)
      • B(k);XR(I)::S(J),XB(k)
      • R(d);N_PINQ(F),OGATE::B(E)
      • Q(j);N_GUARD,N_SPINB(i)::R1(I),XQ(j)
      • S(a);N_PINQ(F)::QAB1(F)
      • S(h);N_PINQ(F)::QAB(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).