MESON Chess Problem Database

Problem Display
PID: 208015 (2Q5/2K1P3/8/1ppk4/8/2BppP2/5N2/6r1 w - - 0 1)

Fessler, Rosa

Wiener Salonblatt, 1873

2Q5/2K1P3/8/1ppk4/8/2BppP2/5N2/6r1

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qg8#
    • 1...Rb1
      • 2.Qg8#
    • 1...Rc1
      • 2.Qg8#
    • 1...Rd1
      • 2.Qg8#
    • 1...Re1
      • 2.Qg8#
    • 1...Rf1
      • 2.Qg8#
    • 1...Rh1
      • 2.Qg8#
    • 1...Rg8
      • 2.Qxg8#
    • 1...c4
      • 2.Qf5#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Qe4#
      • 1...c4
        • 2.Qf5#
      • 1...Rxg4!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Sxe3#
      • 1...Kc4
        • 2.Qe6#
      • 1...Rxd1
        • 2.Qg8#
      • 1...Re1
        • 2.Qg8#
      • 1...e2
        • 2.Se3#
      • 1...c4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::QAB(F)
    • R(a);N_GUARD::QAB(F),XR(a)
    • P(e);SBLOCK::QAR2(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • P(e);SBLOCK::QAR2(F)
      • Refutation
        • R(a);XQ(F)
  • Actual
    • S(A);
    • Threat
      • S(A),XP(c)
    • Vars
      • K(f);S_FLIGHT::QAB(F)
      • R(a);N_GUARD,XS(A)::QAB(F)
      • R(a);N_GUARD::QAB(F)
      • P(c);::S(A)
      • P(e);SBLOCK::QAR2(F)
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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).