MESON Chess Problem Database

Problem Display
PID: 274912 (n3N3/pK4n1/rp6/3k4/2R5/1N6/4Q3/q6b w - - 0 1)

Burda, Josef

Sachova skladba, 2023

n3N3/pK4n1/rp6/3k4/2R5/1N6/4Q3/q6b

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rxd4#
    • 1...Qb1
      • 2.Rd4#
    • 1...Qc1
      • 2.Rd4#
    • 1...Qe1
      • 2.Rd4#
    • 1...Qf1
      • 2.Rd4#
    • 1...Qa2
      • 2.Rd4#
    • 1...Qa3
      • 2.Rd4#
    • 1...Qa5
      • 2.Rd4#
    • 1...Be4
      • 2.Qxe4#
    • 1...b5
      • 2.Rc5#
  • Keys
    • 1.Rc6!
      • threat
        • 2.Rd6#
      • 1...Sxe8
        • 2.Qe6#
      • 1...Be4
        • 2.Qb5#
      • 1...Qe5
        • 2.Qc4#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Qa3
        • 2.Sf6#
      • 1...Sf5
        • 2.Qe6#
      • 1...b5
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::R1(C),XQ(a)
    • Q(a);N_GUARD::R1(C)
    • B(b);N_GUARD::QAB1(A),XB(b)
    • P(e);N_GUARD::R1(C)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • S(g);N_GUARD,XS(E)::QAB1(A)
      • B(b);SBLOCK::QAR2(A)
      • Q(a);SBLOCK::QAB1(A)
      • Q(a);N_GUARD::S(E),XQ(a)
      • Q(a);N_GUARD::S(E)
      • S(g);N_GUARD::QAB1(A)
      • P(e);N_GUARD::R1(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).