MESON Chess Problem Database

Problem Display
PID: 261970 (5r2/4pn2/4Q3/q1r5/2n1Pk2/6RP/6BB/6bK w - - 0 1)

Knuppert, Hugo

2nd Place, Problemnoter, 1960

5r2/4pn2/4Q3/q1r5/2n1Pk2/6RP/6BB/6bK

#2

7 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qg4#
    • 1...Rg5
      • 2.Rf3#
    • 1...Be3
      • 2.Rg4#
      • 2.Rg6#
      • 2.Rg7#
      • 2.Rg8#
    • 1...Se3
      • 2.Rg4#
    • 1...Sce5
      • 2.Qf5#
    • 1...Sfe5
      • 2.Qh6#
    • 1...Sg5
      • 2.Rf3#
  • Tries
    • 1.h4?
      • threat
        • 2.Rf3#
      • 1...Sce5
        • 2.Qf5#
      • 1...Re5
        • 2.Qg4#
      • 1...Sfe5
        • 2.Qh6#
      • 1...Rf5!
  • Keys
    • 1.Qxe7!
      • threat
        • 2.Rf3#
      • 1...Sce5
        • 2.Qf6#
      • 1...Re5
        • 2.Qh4#
      • 1...Sfe5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(e);SBLOCK::QAR1(G)
    • R(e);SBLOCK::B(C)+R(D),DCHECK
    • S(b);SBLOCK::B(C)+R(D),DCHECK
    • S(b);S_CUTR(e)::QAR1(G)
    • S(g);N_GUARD,SBLOCK,S_CUTR(e)::QAB(G)
    • S(g);SBLOCK::B(C)+R(D),DCHECK
  • Tries
    • Try
      • P(E);
      • Threat
        • B(C)+R(D),DCHECK
      • Vars
        • S(b);S_CUTR(e)::QAR1(G)
        • R(e);SBLOCK::QAR1(G)
        • S(g);N_GUARD,SBLOCK,S_CUTR(e)::QAB(G)
      • Refutation
        • R(e);
  • Actual
    • Q(G);XP(f)
    • Threat
      • B(C)+R(D),DCHECK
    • Vars
      • S(b);S_CUTR(e)::QAR2(G)
      • R(e);SBLOCK::QAR2(G)
      • S(g);N_GUARD,S_CUTR(e)::QAB1(G)
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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).