MESON Chess Problem Database

Problem Display
PID: 203740 (8/pNB5/2p1pP1q/2rk4/1bN1p3/1KPP4/8/Q7 w - - 0 1)

Bidlen, Anton

Sinfonie Scacchistiche, 2018

8/pNB5/2p1pP1q/2rk4/1bN1p3/1KPP4/8/Q7

#2

8 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qg7
      • 2.Se3#
    • 1...Qf8
      • 2.Se3#
    • 1...Qh1
      • 2.Se3#
    • 1...Qh2
      • 2.Se3#
    • 1...Qh4
      • 2.Se3#
    • 1...Qh5
      • 2.Se3#
    • 1...Qxf6
      • 2.Se3#
    • 1...Qg6
      • 2.Se3#
    • 1...Qh7
      • 2.Se3#
    • 1...Qh8
      • 2.Se3#
    • 1...Rxc4
      • 2.dxc4#
    • 1...a5
      • 2.Sb6#
    • 1...a6
      • 2.Sb6#
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qd4#
      • 1...Qxf6
        • 2.Se3#
      • 1...Rxc4
        • 2.dxc4#
      • 1...Bxc3
        • 2.Qxc5#
      • 1...e5
        • 2.Qg8#
      • 1...Qe3
        • 2.Sxe3#
      • 1...e3
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(g);N_GUARD::S(E),XQ(g)
    • Q(g);N_GUARD::S(E)
    • Q(g);N_GUARD,XP(F)::S(E)
    • R(c);OGATE,XS(E)::P(D),XR(c)
    • P(h);N_GUARD::S(E)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • Q(g);N_GUARD,XP(F)::S(E)
      • R(c);OGATE,XS(E)::P(D),XR(c)
      • B(a);N_GUARD,XP(C)::QAR1(A),XR(c)
      • P(f);OGATEB::QAB(A)
      • Q(g);N_GUARD::S(E),XQ(g)
      • P(b);OGATEB::QAB(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).