MESON Chess Problem Database

Problem Display
PID: 101255 (1qn5/B4pnK/3PrR2/Q2Bkrp1/3NN1p1/1P1p4/5P2/4R3 w - - 0 1)

Stimson, James Frank (Ua Tane)

Good Companions, 1919

1qn5/B4pnK/3PrR2/Q2Bkrp1/3NN1p1/1P1p4/5P2/4R3

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf2
      • 2.Sc6#
      • 2.Bb7#
    • 1...Rf3
      • 2.Sc6#
      • 2.Bb7#
    • 1...Rf4
      • 2.Sc6#
      • 2.Bb7#
    • 1...Sh5
      • 2.Rxf5#
    • 1...Se8
      • 2.Rxf5#
  • Keys
    • 1.Sc5+!
      • 1...Kxd4
        • 2.Sxe6#
      • 1...Kf4
        • 2.Sxd3#
      • 1...Kxd5
        • 2.Sb7#
      • 1...Kxd6
        • 2.Qd8#
      • 1...Kxf6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(h);N_GUARD::R1(I),XR(d)
  • Actual
    • S(E);CHECK
    • Vars
      • K(c);S_FLIGHT,XS(D)::B(J)+S(E),DCHECK,XR(f)
      • K(c);P_SPINR(d),S_FLIGHT::S(E),XP(a)
      • K(c);P-FLIGHT,XB(G)::QAR(F)+S(E)
      • K(c);P_SPINR(f),S_FLIGHT,XP(H)::QAR2(F)
      • K(c);S_FLIGHT,XR(I)::S(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).