MESON Chess Problem Database

Problem Display
PID: 80690 (8/k1NN4/3KP3/3B4/3PQ3/7r/p7/R4b2 w - - 0 1)

Shire, David J

The Independent, 1990

8/k1NN4/3KP3/3B4/3PQ3/7r/p7/R4b2

#2

8 + 4

145 StrateGems 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Bb3?
      • threat
        • 2.Qa8#
      • 1...Bg2
        • 2.Rxa2#
      • 1...Rh8!
    • 1.Bc4?
      • threat
        • 2.Qa8#
      • 1...Rh8
        • 2.Rxa2#
      • 1...Bg2!
    • 1.Rxa2+?
      • 1...Ba6
        • 2.Sb5#
        • 2.Rxa6#
      • 1...Ra3!
  • Keys
    • 1.Bxa2!
      • threat
        • 2.Qa8#
      • 1...Rh8
        • 2.Bc4#
      • 1...Bg2
        • 2.Bb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • B(a);N_GUARD::R(A),XP(b)
      • Refutation
        • R(c);
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • R(c);N_GUARD::R(A),XP(b)
      • Refutation
        • B(a);
    • Try
      • R(A);CHECK,XP(b)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • B(D);XP(b)
    • Threat
      • QAR1(C)
    • Vars
      • R(c);N_GUARD::R(A)+B(D)
      • B(a);N_GUARD::R(A)+B(D)
HTML5 logo

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).