MESON Chess Problem Database

Problem Display
PID: 233689 (8/4N3/5b2/6p1/1Bkp1rR1/2N4K/4Pp2/1R3B2 w - - 0 1)

Chamberlain, Brian E

Problem Observer, 2021

8/4N3/5b2/6p1/1Bkp1rR1/2N4K/4Pp2/1R3B2

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3+
      • 2.exf3#
    • 1...Rf5
      • 2.e3#
    • 1...dxc3
      • 2.e3#
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sa5#
      • 1...Rf3+
        • 2.exf3#
      • 1...dxc3
        • 2.e4#
      • 1...Rf5
        • 2.e3#
      • 1...Bd8
        • 2.Se5#
      • 1...d3
        • 2.exd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);CHECK,OGATE,P_SPINP(c)::B(B)+P(C),XR(d)
    • R(d);P_SPINP(c)::B(B)+P(C)
    • P(c);N_GUARD,P_SPINR(d),XS(D)::B(B)+P(C)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • R(d);CHECK,OGATE,P_SPINP(c)::B(B)+P(C),XR(d)
      • P(c);N_GUARD,P_SPINR(d),XS(D)::B(B)+P(C)
      • R(d);P_SPINP(c)::B(B)+P(C)
      • B(f);N_GUARD::S(H)
      • P(c);OGATE,P_SPINR(d)::P(C),XP(c)
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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).