MESON Chess Problem Database

Problem Display
PID: 266055 (8/6b1/b1p4q/2Q1p2P/1pN1N3/pBPk1P2/n1p5/2n2K2 w - - 0 1)

Butschkov, Viktor

Die Schwalbe, 1973

8/6b1/b1p4q/2Q1p2P/1pN1N3/pBPk1P2/n1p5/2n2K2

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Qd6#
    • 1...Qe3
      • 2.Qxe3#
    • 1...Qf4
      • 2.Qd6#
    • 1...Qg5
      • 2.Qd6#
    • 1...Qxh5
      • 2.Qe3#
      • 2.Qd6#
    • 1...Qd6
      • 2.Qe3#
      • 2.Qxd6#
    • 1...Qe6
      • 2.Qe3#
    • 1...Qf6
      • 2.Qe3#
    • 1...Qg6
      • 2.Qe3#
    • 1...Qh7
      • 2.Qe3#
      • 2.Qd6#
    • 1...Qh8
      • 2.Qe3#
      • 2.Qd6#
    • 1...Bxc4
      • 2.Bxc4#
    • 1...Bf6
      • 2.Qd6#
    • 1...Bf8
      • 2.Sxe5#
    • 1...Sxc3
      • 2.Sf2#
    • 1...bxc3
      • 2.Sf2#
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qxc2#
      • 1...Bxc4
        • 2.Bxc2#
      • 1...Sxb3
        • 2.Qe2#
      • 1...Sxc3
        • 2.Sc5#
      • 1...bxc3
        • 2.Sc5#
      • 1...Qd2
        • 2.Qxd2#
      • 1...Se2
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(j);N_GUARD::QAR(G)
    • Q(j);N_GUARD::QAR1(G),XQ(j)
    • Q(j);N_GUARD,P_PINP(D)::QAR(G)
    • Q(j);N_GUARD::QAR1(G)
    • Q(j);N_GUARD,P_PINP(D)::QAR1(G)
    • B(h);OGATE,XS(E)::B(B),XB(h)
    • B(k);S_CUTQ(j)::QAR(G)
    • B(k);N_GUARD::S(E),XP(g)
    • S(b);SBLOCK,XP(C)::S(F)
    • P(f);SBLOCK,XP(C)::S(F)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G),XP(c)
    • Vars
      • B(h);SBLOCK,XS(E)::B(B),XP(c)
      • S(a);N_GUARD,XB(B)::QAB1(G)
      • S(b);SBLOCK,XP(C)::S(F)
      • P(f);SBLOCK,XP(C)::S(F)
      • Q(j);N_GUARD::QAR1(G),XQ(j)
      • S(a);N_GUARD::QAB1(G),XS(a)
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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).