MESON Chess Problem Database

Problem Display
PID: 265443 (2B5/2rN4/5R1q/Qnbp4/2pnkP1p/5p2/2P1NP2/7K w - - 0 1)

Coello Alonso, Jose Antonio

Candela MT (Problemas), 2018

2B5/2rN4/5R1q/Qnbp4/2pnkP1p/5p2/2P1NP2/7K

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Rxf4#
    • 1...Qxf6
      • 2.Sxf6#
    • 1...Ra7
      • 2.Sxc5#
    • 1...Rb7
      • 2.Sxc5#
    • 1...Sc6
      • 2.Sxc5#
    • 1...Sa3
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sd6
      • 2.Sc3#
    • 1...Sa7
      • 2.Sc3#
    • 1...h3
      • 2.Sg3#
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qe3#
      • 1...Qxf4
        • 2.Rxf4#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sxe2
        • 2.Qe5#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sb3
        • 2.Qe5#
      • 1...Sf5
        • 2.Qe5#
      • 1...Sc6
        • 2.Sxc5#
      • 1...Se6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(i);OGATE,XP(E)::R1(G),XQ(i)
    • Q(i);XR(G)::S(H),XQ(i)
    • R(j);N_GUARD::S(H),XB(g)
    • S(c);S_CUTR(j)::S(H),XB(g)
    • S(f);N_GUARD::S(C)
    • S(f);N_GUARD::S(C),XS(f)
    • P(e);N_GUARD::S(C)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • Q(i);OGATE,XP(E)::R1(G),XQ(i)
      • Q(i);XR(G)::S(H),XQ(i)
      • S(c);OGATE,XP(B)::QAB(F),XS(c)
      • S(c);OGATE,XS(C)::QAR1(F)
      • S(f);XQ(F)::S(C),XS(f)
      • S(c);OGATE::QAR1(F)
      • S(c);S_CUTR(j)::S(H),XB(g)
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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).