Problem Display
PID: 49951 (2Qn4/4B3/B1PpP3/P1Nk4/pp1N2K1/4R3/8/2R5 w - - 0 1)

Zajic, Helmut

1st Prize, Het Belgisch Schaakbord (L'Echiquier Belge), 1981-1982

2Qn4/4B3/B1PpP3/P1Nk4/pp1N2K1/4R3/8/2R5

#2

11 + 5


5110 Bekroonde Problemen 2002

SOLUTION


  • SOUND
  • Sets
    • 1...dxc5
      • 2.Qd7#
      • 2.Qxd8#
  • Tries
    • 1.Sdb3?
      • threat
        • 2.Bc4#
        • 2.Rd1#
      • 1...Sxc6
        • 2.Bc4#
      • 1...Sxe6
        • 2.Bc4#
      • 1...axb3!
    • 1.Rd3?
      • threat
        • 2.Sf3#
      • 1...Ke5
        • 2.Sf3#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...dxc5!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Sdb3#
      • 1...Kxc5
        • 2.Re5#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Sxe6
        • 2.Sdxe6#
      • 1...b3
        • 2.Sdxb3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);XP(H)::B(G)
        • S(e);XP(I)::B(G)
      • Refutation
        • P(a);XS(C)
    • Try
      • R(B);
      • Threat
        • R(B)+S(C)
      • Vars
        • K(c);P-FLIGHT::S(C)
        • S(e);XP(H)::R(B)+S(C),XS(e)
        • S(e);OGATE,XP(I)::QAB1(K),XS(e)
      • Refutation
        • P(d);XS(F)
  • Actual
    • R(A);
    • Threat
      • R(A)+S(C)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(d),XS(F)::R(B)
      • S(e);OGATE,XP(H)::QAB1(K),XS(e)
      • S(e);XP(I)::R(A)+S(C),XS(e)
      • P(b);::R(A)+S(C),XP(b)


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).