MESON Chess Problem Database

Problem Display
PID: 265268 (2n3b1/3N4/1p6/B2P1P1r/2PkPpRp/p2Pp1r1/2K2P2/1n2R1Q1 w - - 0 1)

Parcerisa, Jose Antonio Lopez

Coello-75 JT (Problemas), 2017

2n3b1/3N4/1p6/B2P1P1r/2PkPpRp/p2Pp1r1/2K2P2/1n2R1Q1

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Bc3#
    • 1...Sc3
      • 2.Bxc3#
    • 1...Sd6
      • 2.Bxb6#
    • 1...Sa7
      • 2.Bxb6#
    • 1...Se7
      • 2.Bxb6#
    • 1...e2
      • 2.fxg3#
    • 1...f3
      • 2.fxe3#
  • Keys
    • 1.Rxf4!
      • threat
        • 2.e5#
      • 1...Rxf5
        • 2.exf5#
      • 1...Bxd5
        • 2.exd5#
      • 1...Rf3
        • 2.Qg7#
      • 1...Rg4
        • 2.fxe3#
      • 1...Sd2
        • 2.Bc3#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Sd6
        • 2.Bxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::B(I)
    • S(a);N_GUARD::B(I),XS(a)
    • S(j);N_GUARD::B(I),XP(i)
    • P(c);::QAB(B)+P(D),XR(d)
    • P(f);N_GUARD,S_CUTR(d)::P(D),XP(c)
  • Actual
    • R(H);XP(f)
    • Threat
      • R(H)+P(G)
    • Vars
      • R(h);OGATE,XP(K)::R(H)+P(G),XR(h)
      • B(k);OGATE,XP(J)::R(H)+P(G),XB(k)
      • R(d);OGATE::QAB(B)
      • R(d);N_GUARD::P(D),XP(c)
      • S(a);N_GUARD::B(I)
      • S(a);N_GUARD::B(I),XS(a)
      • S(j);N_GUARD::B(I),XP(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).