MESON Chess Problem Database

Problem Display
PID: 219576 (2N5/K1P1Qp1b/1B2N3/1RnrknR1/8/b4PPB/3rp3/8 w - - 0 1)

Clark, Cecil Henry Douglas

British Chess Magazine, 1924

2N5/K1P1Qp1b/1B2N3/1RnrknR1/8/b4PPB/3rp3/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...R2d4
      • 2.Sxc5#
    • 1...R5d4
      • 2.Sf4#
    • 1...Bg8
      • 2.Rxf5#
    • 1...Sd3
      • 2.Bd4#
    • 1...Se4
      • 2.f4#
    • 1...fxe6
      • 2.Qg7#
  • Tries
    • 1.Sd4+?
      • 1...Se6
        • 2.Sc6#
      • 1...Kxd4!
    • 1.Sd8+?
      • 1...Se6
        • 2.Sc6#
        • 2.Sxf7#
      • 1...Kd4!
    • 1.Sf8+?
      • 1...Se6
        • 2.Sd7#
      • 1...Kd4!
  • Keys
    • 1.Bg2!
      • threat
        • 2.f4#
      • 1...fxe6
        • 2.Qg7#
      • 1...R5d4
        • 2.Sf4#
      • 1...R2d4
        • 2.Sxc5#
      • 1...Sd3
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(a);SBLOCK::QAR(J)+S(G),XS(d)
    • R(e);N_SPINS(g),P_SPINS(d),SBLOCK::QAR(J)+S(G)
    • B(i);N_GUARD::R1(E),XS(g)
    • S(d);OGATE,P_SPINR(e)::B(F)
    • S(d);P_SPINR(e),SBLOCK::P(A)
    • P(h);OGATE,P_SPINP(h),SBLOCK,XS(G)::QAB(J)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(d);P_SPINR(e)::S(G)
      • Refutation
        • K(f);N_SPINS(g),P_SPINS(d),S_FLIGHT,XS(G)
    • Try
      • S(G);CHECK
      • Refutation
        • K(f);N_SPINS(g),P_SPINS(d),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • S(d);P_SPINR(e)::S(G)
      • Refutation
        • K(f);N_SPINS(g),P_SPINS(d),S_FLIGHT
  • Actual
    • B(C);
    • Threat
      • P(A)
    • Vars
      • P(h);OGATE,P_SPINP(h),SBLOCK,XS(G)::QAB(J)
      • R(e);N_SPINS(g),P_SPINS(d),SBLOCK::QAR(J)+S(G)
      • R(a);SBLOCK::QAR(J)+S(G),XS(d)
      • S(d);OGATE,P_SPINR(e)::B(F)
HTML5 logo

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).