MESON Chess Problem Database

Problem Display
PID: 165308 (8/3Kp1B1/4P3/p1p1R3/8/3Bp3/N2R3n/k4rrQ w - - 0 1)

Barnes, Barry Peter

The Problemist Supplement, 2017

8/3Kp1B1/4P3/p1p1R3/8/3Bp3/N2R3n/k4rrQ

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rg5#
    • 1...Re1
      • 2.Rg5#
    • 1...Rf2
      • 2.Rf5#
    • 1...Rf3
      • 2.Rf5#
    • 1...Rf5
      • 2.Rxf5#
    • 1...Rxh1
      • 2.Rf5#
    • 1...Rg2
      • 2.Rg5#
    • 1...Rg3
      • 2.Rg5#
    • 1...Rg5
      • 2.Rxg5#
  • Keys
    • 1.Sb4!
      • threat
        • 2.Ra2#
      • 1...exd2
        • 2.Re1#
      • 1...axb4
        • 2.Qa8#
      • 1...cxb4
        • 2.Rxa5#
      • 1...Rf2
        • 2.Rf5#
      • 1...Rg2
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::B(H)+R(E)
    • R(b);P_SPINR(c)::B(H)+R(E)
    • R(b);P_SPINR(c)::B(H)+R(E),XR(b)
    • R(c);N_GUARD,SBLOCK,XQ(A)::B(H)+R(E)
    • R(c);P_SPINR(b)::B(H)+R(E)
    • R(c);P_SPINR(b)::B(H)+R(E),XR(c)
  • Actual
    • S(B);
    • Threat
      • R1(C)
    • Vars
      • P(e);OGATE,XR(C)::B(H)+R(E),DCHECK
      • P(f);OGATEB,XS(B)::QAB(A)
      • P(g);OGATE,XS(B)::B(H)+R(E),DCHECK,XP(f)
      • R(b);P_SPINR(c)::B(H)+R(E)
      • R(c);P_SPINR(b)::B(H)+R(E)
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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).