MESON Chess Problem Database

Problem Display
PID: 170116 (2n5/5P1K/5NR1/5k1p/7r/4Q3/b6b/8 w - - 0 1)

Kupper, Josef

Tages-Anzeiger, 2014

2n5/5P1K/5NR1/5k1p/7r/4Q3/b6b/8

#2

5 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rh3
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Be6
      • 2.Qg5#
    • 1...Bf4
      • 2.Qe4#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sg7#
        • 2.Rg5#
      • 1...Re4
        • 2.Qg5#
      • 1...Rf4
        • 2.Sg7#
      • 1...Rg4
        • 2.Sg7#
        • 2.Rf6#
      • 1...Bf4
        • 2.Sg7#
      • 1...Be5!
    • 1.Sg8?
      • threat
        • 2.Sh6#
        • 2.Rg5#
      • 1...Re4
        • 2.Qg5#
      • 1...Be5
        • 2.Sh6#
      • 1...Rf4
        • 2.Sh6#
      • 1...Rg4
        • 2.Sh6#
        • 2.Rf6#
      • 1...Bf4!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Rg5#
      • 1...Re4
        • 2.Qg5#
      • 1...Rf4
        • 2.Qe5#
      • 1...Rg4
        • 2.Rf6#
      • 1...Bf4
        • 2.Qd3#
      • 1...Be5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD::QAB1(A)
    • R(c);N_GUARD::QAB1(A),XR(c)
    • B(a);SBLOCK::QAR1(A)
    • B(b);S_CUTR(c)::QAB1(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);SBLOCK::QAR1(A)
        • R(c);::S(B)
        • B(b);::S(B)
      • Refutation
        • B(b);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);SBLOCK::QAR1(A)
        • B(b);::S(B)
        • R(c);::S(B)
      • Refutation
        • B(b);
  • Actual
    • S(B);
    • Threat
      • R1(C)
    • Vars
      • R(c);SBLOCK::QAR1(A)
      • R(c);S_CUTB(b)::QAR1(A)
      • R(c);SBLOCK::R1(C)
      • B(b);SBLOCK,S_CUTR(c)::QAB(A)
      • B(b);N_GUARD::QAR1(A),XB(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).