MESON Chess Problem Database

Problem Display
PID: 251898 (4NR2/3pp2q/4kb1R/3rN3/1r3P2/1B1pQP2/3K4/8 w - - 0 1)

van Atten, Jasper

Probleemblad, 1982

4NR2/3pp2q/4kb1R/3rN3/1r3P2/1B1pQP2/3K4/8

#2

9 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Sg6+?
      • 1...Kf5
        • 2.Sh4#
      • 1...Be5
        • 2.Qxe5#
        • 2.f5#
      • 1...Re4!
  • Keys
    • 1.Sc4+!
      • 1...Kf5
        • 2.Qe4#
      • 1...Qe4
        • 2.Sg7#
      • 1...Re5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK,N_PINB(e)
      • Vars
        • K(d);N_SPINR(c),P_SPINB(e),S_CUTQ(h),S_CUTR(b),S_FLIGHT::S(F)
      • Refutation
        • R(b);N_SPINR(c),P_SPINR(b)
  • Actual
    • S(F);CHECK,N_PINR(c)
    • Vars
      • K(d);S_CUTQ(h),S_CUTR(c),S_FLIGHT::QAB1(C)
      • Q(h);P_SPINQ(h)::S(H)
      • R(c);N_GUARD,P_SPINR(c)::QAR1(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).