MESON Chess Problem Database

Problem Display
PID: 227310 (3RN1b1/n7/B4Qq1/1pB3p1/N1kP4/5p2/PnrR3p/2b4K w - - 0 1)

Eerkes, Allard Pieter

Probleemblad, 1981

3RN1b1/n7/B4Qq1/1pB3p1/N1kP4/5p2/PnrR3p/2b4K

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Sb6#
    • 1...Bd5
      • 2.Sd6#
    • 1...Sd3
      • 2.Rxc2#
  • Keys
    • 1.Qxf3!
      • threat
        • 2.Qb3#
      • 1...Qd3
        • 2.Sd6#
      • 1...Qe4
        • 2.Sb6#
      • 1...Qc6
        • 2.Rxc2#
      • 1...Rc3
        • 2.Qxc3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sd3
        • 2.Rxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::S(D)
    • B(k);SBLOCK::S(J)
    • S(b);SBLOCK,S_CUTQ(i)::R(C),XR(c)
  • Actual
    • Q(H);XP(e)
    • Threat
      • QAB1(H)
    • Vars
      • Q(i);N_GUARD::S(J)
      • Q(i);N_GUARD,P_PINQ(H)::S(D)
      • Q(i);N_GUARD,P_PINQ(H)::R(C),XR(c)
      • R(c);N_GUARD::QAR1(H),XR(c)
      • B(k);N_GUARD,P_PINQ(H)::QAB1(H),XB(k)
      • S(b);S_CUTQ(i)::R(C),XR(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).