MESON Chess Problem Database

Problem Display
PID: 70086 (2Q5/5R2/B4pq1/1r1bp1P1/4k1P1/1pP1N3/6KB/2nR1N2 w - - 0 1)

Lincoln, Robert A

HM., Scacchi e Scienze Applicate, 2005

2Q5/5R2/B4pq1/1r1bp1P1/4k1P1/1pP1N3/6KB/2nR1N2

#2

11 + 8

145 StrateGems 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qh5
      • 2.Qf5#
    • 1...Qxf7
      • 2.Qf5#
    • 1...Qh6
      • 2.Qf5#
    • 1...Qg7
      • 2.Qf5#
    • 1...Qg8
      • 2.Qf5#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bb7
      • 2.Qc4#
    • 1...Ba8
      • 2.Qc4#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sd6#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...fxg5
        • 2.Sg3#
      • 1...Rb6
        • 2.Scd2#
      • 1...f5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sd6#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...fxg5
        • 2.S5g3#
      • 1...Rb6
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(h);N_GUARD::QAB1(K),XQ(h)
    • Q(h);N_GUARD::QAB1(K)
    • Q(h);N_GUARD,XR(J)::QAB1(K)
    • B(e);N_GUARD::QAR2(K),XB(e)
    • B(e);N_GUARD::QAR2(K)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(e);OGATE,XS(F)::QAR2(K),XB(e)
        • P(g);XP(H)::S(B)
        • R(d);::S(F)
      • Refutation
        • P(g);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • Q(h);OGATE,XS(F)::QAB1(K),XQ(h)
      • P(g);XP(H)::S(F)
      • R(d);::S(B)
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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).