Problem Display
PID: 129707 (8/8/1q6/2nnQ3/r1p4b/2RN4/3pP1N1/1b1k2K1 w - - 0 1)

Stross, Ludvik

Besedy lidu, 1902

8/8/1q6/2nnQ3/r1p4b/2RN4/3pP1N1/1b1k2K1

#2

6 + 9


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Qa5
      • 2.Sb2#
    • 1...Qa7
      • 2.Sb2#
    • 1...Qc7
      • 2.Sb2#
    • 1...Qd8
      • 2.Sb2#
    • 1...Qb2
      • 2.Sxb2#
    • 1...Qa6
      • 2.Sb2#
    • 1...Qc6
      • 2.Sb2#
    • 1...Qd6
      • 2.Sb2#
    • 1...Qe6
      • 2.Sb2#
    • 1...Qf6
      • 2.Sb2#
    • 1...Qg6
      • 2.Sb2#
    • 1...Qh6
      • 2.Sb2#
    • 1...Bf2+
      • 2.Sxf2#
    • 1...Bg5
      • 2.Sf2#
    • 1...Bf6
      • 2.Sf2#
    • 1...Be7
      • 2.Sf2#
    • 1...Bd8
      • 2.Sf2#
    • 1...Sb4
      • 2.Sb2#
  • Keys
    • 1.Qh5!
      • threat
        • 2.e3#
        • 2.e4#
      • 1...Bf2+
        • 2.Sxf2#
      • 1...Sb3+
        • 2.e3#
      • 1...Sxd3+
        • 2.e3#
      • 1...Se4+
        • 2.e3#
      • 1...Sa6+
        • 2.e3#
      • 1...Se6+
        • 2.e3#
      • 1...Sb7+
        • 2.e3#
      • 1...Sd7+
        • 2.e3#
      • 1...Bxd3
        • 2.exd3#
      • 1...Sxc3
        • 2.Se3#
      • 1...cxd3
        • 2.e4#
      • 1...Qe6
        • 2.Sb2#
      • 1...Qf6
        • 2.Sb2#
      • 1...Qg6
        • 2.Sb2#
      • 1...Qh6
        • 2.Sb2#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sf4
        • 2.Se3#
      • 1...Sf6
        • 2.Se3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 13
  • Sets
    • Q(i);N_GUARD::S(E)
    • Q(i);N_GUARD::S(E),XQ(i)
    • Q(i);N_GUARD,P_PINS(C)::S(E)
    • B(f);CHECK,N_GUARD::S(E),XB(f)
    • B(f);N_GUARD::S(E)
    • S(h);S_CUTQ(i)::S(E)
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • B(f);CHECK,N_GUARD::S(E),XB(f)
      • S(g);CHECK::QAB(F)+P(B)
      • S(g);CHECK,XS(E)::QAB(F)+P(B)
      • B(a);OGATE,XS(E)::QAB(F)+P(B),XB(a)
      • S(h);N_GUARD,XR(D)::S(C)
      • P(e);XS(E)::QAB(F)+P(B)
      • Q(i);N_GUARD::S(E)
      • Q(i);N_GUARD,P_PINS(C)::S(E)
      • S(h);N_GUARD::S(C),XS(h)
      • S(h);N_GUARD::S(C)


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).