MESON Chess Problem Database

Problem Display
PID: 164112 (8/8/2ppBp2/Rb1pkP2/2p5/N4PP1/Q1N5/5K2 w - - 0 1)

Sardella, Giuseppe

Best Problems, 2015

8/8/2ppBp2/Rb1pkP2/2p5/N4PP1/Q1N5/5K2

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Sxc4#
    • 1...d4
      • 2.Sxc4#
  • Tries
    • 1.Qa1+?
      • 1...d4
        • 2.Sxc4#
        • 2.Qxd4#
        • 2.Qe1#
      • 1...c3+!
    • 1.Qb2+?
      • 1...d4
        • 2.Sxc4#
        • 2.Qxd4#
      • 1...c3+!
  • Keys
    • 1.Qxc4!
      • threat
        • 2.f4#
      • 1...Bxc4+
        • 2.Sxc4#
      • 1...dxc4
        • 2.Sxc4#
      • 1...d4
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);N_GUARD,P_SPINP(c)::S(D),XP(a)
    • P(c);N_GUARD,P_SPINB(b)::S(D),XP(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • P(a);CHECK,P_SPINP(a)
    • Try
      • Q(B);CHECK
      • Refutation
        • P(a);CHECK,P_SPINP(a)
  • Actual
    • Q(B);P_SPINQ(B),XP(a)
    • Threat
      • P(E)
    • Vars
      • B(b);CHECK,P_SPINP(c),XQ(B)::S(D),XB(b)
      • P(c);P_SPINB(b),XQ(B)::S(D),XP(c)
      • P(c);P_SPINB(b)::QAR(B)
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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).