MESON Chess Problem Database

Problem Display
PID: 70733 (5b2/4R1p1/1PpBP1P1/2rk3K/1pNN4/1P5p/p1B4P/nb4Q1 w - - 0 1)

Overkamp, Petrus

Stratford Express, 1951

5b2/4R1p1/1PpBP1P1/2rk3K/1pNN4/1P5p/p1B4P/nb4Q1

#2

12 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qe4#
        • 2.Qe5#
      • 1...Rxc4
        • 2.Qe5#
      • 1...Bxc2
        • 2.Qe5#
      • 1...Sxc2
        • 2.Qe5#
      • 1...Sxb3!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Se3#
        • 2.Sc7#
        • 2.Qd4#
        • 2.Qxc5#
        • 2.Qd1#
        • 2.Qh1#
        • 2.Qg5#
      • 1...Rxc4
        • 2.Qg5#
      • 1...Rxb5
        • 2.Qd1#
      • 1...Bxc2
        • 2.Qd4#
      • 1...Bxe7
        • 2.Sc7#
      • 1...Sxc2
        • 2.Qh1#
      • 1...Sxb3
        • 2.Se3#
      • 1...cxb5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);XS(E)::QAR1(A)
        • B(b);XB(B)::QAR1(A)
        • S(a);XB(B)::QAR1(A)
      • Refutation
        • S(a);XP(D)
  • Actual
    • S(F);
    • Threat
      • DUALS(7)
    • Vars
      • R(f);XS(E)::QAR(A)
      • R(f);XS(F)::QAR(A)
      • B(b);XB(B)::QAR1(A)
      • B(j);XR(L)::S(F)
      • S(a);XB(B)::QAB(A)
      • S(a);XP(D)::S(E)
      • P(h);XS(F)::QAR1(A),XR(f)
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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).