MESON Chess Problem Database

Problem Display
PID: 199825 (1Bb3B1/1p2pP1K/2p1N2n/2pk1pp1/5P2/1qpPQn2/3N4/8 w - - 0 1)

Mosiashvili, Givi

Die Schwalbe, 2019

1Bb3B1/1p2pP1K/2p1N2n/2pk1pp1/5P2/1qpPQn2/3N4/8

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.dxc4#
    • 1...Se1
      • 2.Qe5#
    • 1...Sg1
      • 2.Qe5#
    • 1...Sxd2
      • 2.Qe5#
    • 1...Sh2
      • 2.Qe5#
    • 1...Sd4
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...gxf4
      • 2.Sxf4#
  • Tries
    • 1.Be5?
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.f8S#
      • 1...Bxe6
        • 2.Qxf3#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Qb6!
    • 1.f8S?
      • threat
        • 2.Qxc5#
        • 2.Qxf3#
      • 1...Bxe6
        • 2.Bxe6#
      • 1...Sxd2
        • 2.Qxc5#
        • 2.Qe5#
      • 1...Qd1
        • 2.Qxc5#
      • 1...Qa4
        • 2.Qxc5#
      • 1...Qc4
        • 2.dxc4#
      • 1...Qa3
        • 2.Qxf3#
      • 1...Qb5
        • 2.Qxf3#
      • 1...Qb6
        • 2.Qxf3#
      • 1...Se1
        • 2.Qxc5#
        • 2.Qe5#
      • 1...Sg1
        • 2.Qxc5#
        • 2.Qe5#
      • 1...Sh2
        • 2.Qxc5#
        • 2.Qe5#
      • 1...Sd4
        • 2.Qe5#
      • 1...Sh4
        • 2.Qxc5#
        • 2.Qe5#
      • 1...Se5
        • 2.Qxc5#
        • 2.Qxe5#
      • 1...c4
        • 2.Qc5#
        • 2.Qxf3#
      • 1...g4
        • 2.Qxc5#
      • 1...b6
        • 2.Qxf3#
      • 1...Qb4!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.f8S#
      • 1...Bxe6
        • 2.Qxc5#
      • 1...fxe4
        • 2.Qxe4#
      • 1...gxf4
        • 2.Sxf4#
      • 1...Qb6
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • Q(a);OGATE::P(B),XQ(a)
    • S(c);N_GUARD::QAR1(C)
    • S(c);N_GUARD,XS(A)::QAR1(C)
    • S(c);N_GUARD::QAR1(C),XS(c)
    • P(g);XP(D)::S(E),XP(g)
  • Tries
    • Try
      • B(H);
      • Threat
        • S(E)
      • Vars
        • K(e);S_FLIGHT,XS(E)::P=S
        • B(l);SBLOCK,XS(E)::QAB(C),XS(c)
        • S(c);OGATE,XB(H)::QAR1(C),XS(c)
      • Refutation
        • Q(a);
    • Try
      • P(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(l);OGATE,P_SPINB(l),XS(E)::B(I),XB(l)
        • Q(a);::QAR1(C),XP(d)
        • Q(a);OGATE::P(B),XQ(a)
        • Q(a);::QAB(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
        • P(g);::QAR1(C),XP(d)
        • P(j);::QAB(C),XS(c)
      • Refutation
        • Q(a);
  • Actual
    • S(A);
    • Threat
      • S(E)
    • Vars
      • K(e);S_FLIGHT,XS(E)::P=S
      • B(l);SBLOCK,XS(E)::QAR1(C),XP(d)
      • P(f);OGATE,XS(A)::QAB1(C),XP(f)
      • P(g);XP(D)::S(E),XP(g)
      • Q(a);N_GUARD::S(A),XP(b)
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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).