MESON Chess Problem Database

Problem Display
PID: 203765 (4R3/7N/3P2p1/1K2N2B/RQ2Pkrp/1p6/2pP1rpP/2q2nb1 w - - 0 1)

Clark, Cecil Henry Douglas

Chess Problem Research Pamphlet, 1954

4R3/7N/3P2p1/1K2N2B/RQ2Pkrp/1p6/2pP1rpP/2q2nb1

#2

11 + 11

SOLUTION

  • SOUND
  • Tries
    • 1.Qc3?
      • threat
        • 2.Rf8#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sg3
        • 2.Qe3#
      • 1...Rg5!
    • 1.Qd4?
      • threat
        • 2.Rf8#
      • 1...Bxh2
        • 2.Qxf2#
      • 1...Sxh2
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sg3
        • 2.Qe3#
      • 1...Rg5!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Rf8#
      • 1...Bxh2
        • 2.Qxf2#
      • 1...Sxh2
        • 2.Qe3#
      • 1...Rg5
        • 2.Sd3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sg3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Threat
        • R(K)
      • Vars
        • S(b);N_GUARD::QAB1(D),XS(b)
        • S(b);N_GUARD::QAB1(D)
      • Refutation
        • R(i);P_PINS(G)
    • Try
      • Q(D);
      • Threat
        • R(K)
      • Vars
        • B(c);N_GUARD,XP(B)::QAR2(D),XR(e)
        • S(b);N_GUARD,XP(B)::QAB1(D)
        • S(b);N_GUARD::QAB1(D),XS(b)
        • S(b);N_GUARD::QAB1(D)
      • Refutation
        • R(i);P_PINS(G)
  • Actual
    • Q(D);
    • Threat
      • R(K)
    • Vars
      • B(c);N_GUARD,XP(B)::QAR2(D),XR(e)
      • S(b);N_GUARD,XP(B)::QAB1(D)
      • R(i);::S(G)
      • S(b);N_GUARD::QAB1(D),XS(b)
      • S(b);N_GUARD::QAB1(D)
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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).