MESON Chess Problem Database

Problem Display
PID: 233805 (8/1n2P3/1K1NPQ2/3k2rb/4NPB1/1P2p3/8/3r4 w - - 0 1)

Zipf, Volker

Freie Presse, 1971

8/1n2P3/1K1NPQ2/3k2rb/4NPB1/1P2p3/8/3r4

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qxg5#
    • 1...Rxg4
      • 2.Qe5#
    • 1...Re5
      • 2.Qxe5#
    • 1...Rg6
      • 2.Qe5#
    • 1...Rg7
      • 2.Qe5#
    • 1...Rg8
      • 2.Qe5#
    • 1...Sxd6
      • 2.Sc3#
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qc4#
      • 1...Sxd6
        • 2.Sf6#
      • 1...Rc1
        • 2.Qd3#
      • 1...Rd4
        • 2.Qc6#
      • 1...Sa5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(a);SBLOCK::QAR(H),XR(d)
    • R(d);N_GUARD,XB(D)::QAR1(H)
    • R(d);N_GUARD::QAR1(H),XR(d)
    • R(d);N_GUARD::QAR1(H)
    • S(f);SBLOCK,XS(F)::S(B)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • S(f);SBLOCK,XS(F)::S(B)
      • R(a);N_GUARD::QAR2(H)
      • R(a);SBLOCK::QAB1(H)
      • S(f);N_GUARD::QAR1(H)
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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).