Problem Display
PID: 82263 (B4RK1/3p2p1/2nP2Np/5Pp1/2P1kN2/3prb1r/5Q2/B1n5 w - - 0 1)

Ahues, Herbert Siegfried Oskar

L'Italia Scacchistica, 1984

B4RK1/3p2p1/2nP2Np/5Pp1/2P1kN2/3prb1r/5Q2/B1n5

#2

10 + 11


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Re1
      • 2.Qd4#
    • 1...Re2
      • 2.Qd4#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sc5#
      • 1...dxe6
        • 2.Bxc6#
      • 1...Sb3!
  • Keys
    • 1.Sg2!
      • threat
        • 2.Qxe3#
      • 1...Bxg2
        • 2.Re8#
      • 1...Re1
        • 2.Qd4#
      • 1...Re2
        • 2.Qd4#
      • 1...Bd1
        • 2.Re8#
      • 1...Be2
        • 2.Re8#
      • 1...Bg4
        • 2.Re8#
      • 1...Bh5
        • 2.Re8#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::QAR1(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • P(j);N_GUARD,XS(D)::B(H),XS(h)
      • Refutation
        • S(a);
  • Actual
    • S(D);
    • Threat
      • QAR1(B),XR(c)
    • Vars
      • B(d);XS(D)::R(I)
      • R(c);OGATE::QAR1(B)
      • B(d);::R(I)


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).