MESON Chess Problem Database

Problem Display
PID: 225125 (8/2n5/4p2B/K1Q1N1rB/2Pp3b/3PkPpN/R2R4/6n1 w - - 0 1)

Candela Sanz, Rafael

US Problem Bulletin, 1965

8/2n5/4p2B/K1Q1N1rB/2Pp3b/3PkPpN/R2R4/6n1

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Rxe2#
    • 1...Sxf3
      • 2.Sg4#
      • 2.Re2#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qe5#
      • 1...Sd5
        • 2.Qxd4#
      • 1...e5
        • 2.Qxe5#
      • 1...Sxf3!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qf4#
      • 1...Sxh3
        • 2.Re2#
      • 1...Sd5
        • 2.Sg4#
      • 1...Se2
        • 2.Rxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R1(B),XS(a)
  • Tries
    • Try
      • S(I);P_SPINQ(H)
      • Threat
        • QAR2(H)
      • Vars
        • S(h);N_PINQ(H)::QAB1(H),XP(d)
        • P(g);N_PINQ(H)::QAR2(H),XP(g)
      • Refutation
        • S(a);XP(D)
  • Actual
    • Q(H);N_PINP(d),P_SPINS(I)
    • Threat
      • QAB1(H)
    • Vars
      • S(a);N_GUARD,XS(E)::R1(B)
      • S(h);N_PINS(I)::S(I)
      • S(a);N_GUARD::R1(B),XS(a)
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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).