MESON Chess Problem Database

Problem Display
PID: 223399 (5K2/7p/3p1kNp/3PN1qR/5p2/3P3r/8/6Q1 w - - 0 1)

Schram, Ferdinand

Wiener Hausfrauen-Zeitung, 1886

5K2/7p/3p1kNp/3PN1qR/5p2/3P3r/8/6Q1

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Sd7#
    • 1...Qxg6
      • 2.Sd7#
  • Tries
    • 1.Sd7+?
      • 1...Kf5
        • 2.Se7#
      • 1...Kxg6!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sd7#
      • 1...Qg7+
        • 2.Qxg7#
      • 1...Qg8+
        • 2.Sxg8#
      • 1...Kxe5
        • 2.Qa1#
      • 1...Qxe5
        • 2.Sg8#
        • 2.Qg7#
      • 1...dxe5
        • 2.Qb6#
      • 1...Qg4
        • 2.Sxg4#
      • 1...Qf5
        • 2.Rxf5#
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(c);::S(D)
    • Q(c);XS(F)::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINQ(c)::S(F)
      • Refutation
        • K(e);P-FLIGHT,P_SPINQ(c),XS(F)
  • Actual
    • S(F);
    • Threat
      • S(D)
    • Vars
      • Q(c);CHECK,OGATE::QAB1(A),XQ(c)
      • Q(c);CHECK,N_GUARD::S(F),XQ(c)
      • K(e);OGATEB,P_SPINQ(c),S_FLIGHT,XS(D)::QAB(A)
      • P(d);OGATEB,SBLOCK,XS(D)::QAR(A)
      • Q(c);N_GUARD::S(D),XQ(c)
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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).