MESON Chess Problem Database

Problem Display
PID: 72284 (K2N1Bb1/3B3Q/1PN2R2/RP1kn1r1/1n6/1P6/p1pr1p2/7q w - - 0 1)

Triggs, D

Chess, 1953

K2N1Bb1/3B3Q/1PN2R2/RP1kn1r1/1n6/1P6/p1pr1p2/7q

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Bxe6#
    • 1...Sa6
      • 2.bxa6#
    • 1...Sg4
      • 2.Qxh1#
    • 1...Sf7
      • 2.Be6#
  • Tries
    • 1.Qxh1+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Rg2!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Sxb4#
      • 1...Sbxc6
        • 2.bxc6#
      • 1...Sexc6
        • 2.bxc6#
      • 1...Sxd7
        • 2.Qxd7#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Sbd3
        • 2.Rd4#
      • 1...Sa6
        • 2.bxa6#
      • 1...Sed3
        • 2.Rd4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sc4
        • 2.bxc4#
      • 1...Sg4
        • 2.Qxh1#
      • 1...Sg6
        • 2.Qxg8#
      • 1...Sf7
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • B(j);N_GUARD::B(G),XB(j)
    • S(f);OGATE::R(B)+P(C),XS(f)
    • S(h);N_GUARD,S_CUTR(i)::QAB(H),XQ(a)
    • S(h);S_CUTB(j)::B(G)
  • Tries
    • Try
      • Q(H);CHECK,XQ(a)
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAB(H),XS(h)
      • Refutation
        • R(i);P_SPINR(i)
  • Actual
    • R(F);
    • Threat
      • S(E),XS(f)
    • Vars
      • S(f);OGATE,XS(E)::R(B)+P(C),XS(f)
      • S(h);OGATE,XS(E)::R(B)+P(C),XS(h)
      • S(h);OGATE,XB(G)::QAR2(H),XS(h)
      • Q(a);N_GUARD::QAB1(H),XQ(a)
      • R(d);N_GUARD::R1(F),XR(d)
      • S(f);S_CUTR(d)::R1(F)
      • S(f);OGATE::R(B)+P(C),XS(f)
      • S(h);S_CUTR(d)::R1(F)
      • S(h);S_CUTQ(a)::QAB1(H)
      • S(h);OGATE::P(A),XS(h)
      • S(h);N_GUARD,S_CUTR(i)::QAB(H),XQ(a)
      • S(h);N_GUARD,S_CUTR(i)::QAB(H),XB(j)
      • S(h);S_CUTB(j)::B(G)
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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).