MESON Chess Problem Database

Problem Display
PID: 121382 (n1K5/8/1p1pk1B1/1P1N4/1P6/2pn1N2/6Q1/4r1b1 w - - 0 1)

von Gottschall, Hermann

Bohemia, 1912

n1K5/8/1p1pk1B1/1P1N4/1P6/2pn1N2/6Q1/4r1b1

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qa2#
    • 1...Se5
      • 2.Sg5#
  • Tries
    • 1.Bf7+?
      • 1...Kf5
        • 2.Qg6#
      • 1...Kxf7!
    • 1.Qg5?
      • threat
        • 2.Qf5#
      • 1...Se5
        • 2.Sf4#
      • 1...Re5!
  • Keys
    • 1.Bh7!
      • threat
        • 2.Qg8#
      • 1...Kxd5
        • 2.Qa2#
      • 1...Kf7
        • 2.Qg8#
      • 1...Se5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(g);OGATEB,S_FLIGHT,XS(E)::QAB(A)
    • S(d);SBLOCK::S(B)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(g);S_FLIGHT::QAB1(A)
      • Refutation
        • K(g);S_FLIGHT,XB(F)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(d);N_GUARD::S(E)
      • Refutation
        • R(a);
  • Actual
    • B(F);
    • Threat
      • QAB(A)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • K(g);S_FLIGHT::QAB1(A)
      • S(d);SBLOCK::S(B)
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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).