MESON Chess Problem Database

Problem Display
PID: 146620 (qn1r4/1b3B2/pB6/1R1PpN2/p1k1Np1r/b7/3P3p/1Q2n2K w - - 0 1)

Beach, Lennox F

Good Companions (February), 1918

qn1r4/1b3B2/pB6/1R1PpN2/p1k1Np1r/b7/3P3p/1Q2n2K

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Rb4#
      • 2.Rc5#
    • 1...Bb4
      • 2.Rxb4#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Sc2
      • 2.Qf1#
    • 1...Sg2
      • 2.Qf1#
      • 2.d3#
    • 1...Sf3
      • 2.Qf1#
      • 2.d3#
    • 1...Sc6
      • 2.d6#
    • 1...f3
      • 2.Se3#
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qe4#
      • 1...axb5
        • 2.Qxb5#
      • 1...Sc2
        • 2.Qf1#
      • 1...Bb4
        • 2.Rxb4#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Sd3
        • 2.Qa2#
      • 1...Sf3
        • 2.Qf1#
      • 1...Sc6
        • 2.d6#
      • 1...f3
        • 2.Se3#
      • 1...e4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::R1(E),XB(c)
    • S(a);OGATE::QAB(A)
    • S(l);S_CUTB(j)::B(I)+P(F)
    • P(f);N_GUARD::S(G)
  • Actual
    • S(D);P_SPINP(F)
    • Threat
      • QAR2(A)
    • Vars
      • P(i);OGATE,XR(E)::QAB1(A),XP(i)
      • S(a);OGATE::QAB(A)
      • B(c);N_GUARD::R1(E),XB(c)
      • S(a);SBLOCK::QAB(A)
      • S(a);N_PINP(F),OGATE::QAB(A)
      • S(l);N_PINP(F)::B(I)+P(F)
      • P(f);N_GUARD,N_PINP(F)::S(G)
      • P(h);N_PINP(F)::QAR2(A),XP(h)
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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).