MESON Chess Problem Database

Problem Display
PID: 70899 (2N5/3B4/R2PN1n1/pn1kp1K1/qb6/pP3P2/b1rp4/6Q1 w - - 0 1)

Peris Pardo, Julio

1st Prize, Problemas, 1953

2N5/3B4/R2PN1n1/pn1kp1K1/qb6/pP3P2/b1rp4/6Q1

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Qc5#
    • 1...Bxd6
      • 2.Sb6#
    • 1...Sc3
      • 2.Sc7#
    • 1...Sxd6
      • 2.Sb6#
    • 1...Sf4
      • 2.Se7#
    • 1...Sh4
      • 2.Se7#
    • 1...Se7
      • 2.Sxe7#
    • 1...Sf8
      • 2.Se7#
    • 1...Sh8
      • 2.Se7#
  • Tries
    • 1.Sf4+?
      • 1...Sxf4
        • 2.Se7#
      • 1...exf4!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qe4#
      • 1...Bxd6
        • 2.Sb6#
      • 1...Sxd6
        • 2.Sb6#
      • 1...e4
        • 2.Qxe4#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Bc3
        • 2.Bc6#
      • 1...Bc5
        • 2.Bc6#
      • 1...Sc3
        • 2.Qc4#
      • 1...Sf4
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(f);N_GUARD,S_CUTR(b)::QAR1(A)
    • B(f);SBLOCK,XP(F)::S(I)
    • S(h);N_GUARD,S_CUTR(b)::S(G)
    • S(h);SBLOCK,XP(F)::S(I)
    • S(k);N_GUARD::S(I)
    • S(k);N_GUARD::S(I),XS(k)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(k);XS(G)::S(I)
      • Refutation
        • P(j);XS(G)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • B(f);SBLOCK,XP(F)::S(I)
      • S(h);SBLOCK,XP(F)::S(I)
      • P(j);::QAB1(A),XP(j)
      • R(b);N_GUARD::QAB1(A),XR(b)
      • B(f);S_CUTR(b)::B(H)
      • S(h);S_CUTR(b)::QAB1(A)
      • S(k);N_GUARD::S(I)
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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).