MESON Chess Problem Database

Problem Display
PID: 78465 (3NBB2/7K/1p5p/2np1N2/2kp1nRr/P4Q2/P1bPp2b/2Rq4 w - - 0 1)

Dimitrov, Nikolai

Comm., The Sun-Herald, 1961

3NBB2/7K/1p5p/2np1N2/2kp1nRr/P4Q2/P1bPp2b/2Rq4

#2

11 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Rxc2#
    • 1...Qf1
      • 2.Rxc2#
    • 1...Qg1
      • 2.Rxc2#
    • 1...Qh1
      • 2.Rxc2#
    • 1...Sg2
      • 2.Qc3#
    • 1...Sfd3
      • 2.Se3#
    • 1...Sh3
      • 2.Qc3#
    • 1...Sh5
      • 2.Qc3#
    • 1...Sfe6
      • 2.Qc3#
    • 1...Sg6
      • 2.Qc3#
    • 1...Sb3
      • 2.Qxb3#
      • 2.axb3#
    • 1...Sa4
      • 2.Qb3#
    • 1...Se4
      • 2.Qb3#
    • 1...Sa6
      • 2.Qb3#
    • 1...Sce6
      • 2.Qb3#
    • 1...Sb7
      • 2.Qb3#
    • 1...Sd7
      • 2.Qb3#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Se5#
        • 2.Sd6#
      • 1...Sd7
        • 2.Qb3#
      • 1...e1Q
        • 2.Sd6#
      • 1...e1R
        • 2.Sd6#
      • 1...Sg2
        • 2.Qc3#
      • 1...Sfd3
        • 2.Se3#
      • 1...Sh3
        • 2.Qc3#
      • 1...Sh5
        • 2.Qc3#
      • 1...Sfe6
        • 2.Qc3#
      • 1...Sg6
        • 2.Qc3#
      • 1...Sb3
        • 2.Se5#
        • 2.Qxb3#
        • 2.axb3#
      • 1...Sa4
        • 2.Se5#
        • 2.Qb3#
      • 1...Se4
        • 2.Se5#
        • 2.Qb3#
      • 1...Sa6
        • 2.Se5#
        • 2.Qb3#
      • 1...Sce6
        • 2.Se5#
        • 2.Qb3#
      • 1...Sb7
        • 2.Se5#
        • 2.Qb3#
      • 1...Scd3!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sd6#
      • 1...Sxb7
        • 2.Qb3#
      • 1...Sd7
        • 2.Qb3#
      • 1...Scd3
        • 2.Sfd6#
      • 1...Sg2
        • 2.Qc3#
      • 1...Sfd3
        • 2.Se3#
      • 1...Sh3
        • 2.Qc3#
      • 1...Sh5
        • 2.Qc3#
      • 1...Sfe6
        • 2.Qc3#
      • 1...Sg6
        • 2.Qc3#
      • 1...Sb3
        • 2.Qxb3#
        • 2.axb3#
      • 1...Sa4
        • 2.Qb3#
      • 1...Se4
        • 2.Qb3#
      • 1...Sa6
        • 2.Qb3#
      • 1...Sce6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::R(A),XB(b)
    • S(g);P_SPINP(f)::QAR1(E)
    • S(g);N_PINS(G),P_SPINP(f),SBLOCK::S(G)
    • S(g);N_PINS(G),P_SPINP(f)::QAR1(E)
    • S(i);N_GUARD::QAB1(E)
    • S(i);N_GUARD,N_PINS(G)::QAB1(E)
  • Tries
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);N_GUARD::QAB1(E)
        • P(c);::S(I)
        • S(g);P_SPINP(f)::QAR1(E)
        • S(g);N_PINS(G),P_SPINP(f),SBLOCK::S(G)
        • S(g);N_PINS(G),P_SPINP(f)::QAR1(E)
      • Refutation
        • S(i);N_PINS(G)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • S(i);N_GUARD,XS(I)::QAB1(E)
      • S(i);N_GUARD::QAB1(E)
      • S(i);N_PINS(G)::S(G)
      • S(g);P_SPINP(f)::QAR1(E)
      • S(g);N_PINS(G),P_SPINP(f),SBLOCK::S(G)
      • S(g);N_PINS(G),P_SPINP(f)::QAR1(E)
      • S(i);N_GUARD,N_PINS(G)::QAB1(E)
HTML5 logo

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).