MESON Chess Problem Database

Problem Display
PID: 257530 (8/8/1N2p3/8/1p1kN3/5Q2/8/3K3R w - - 0 1)

Bazhan, Anastasia

Astafyeva-30 JT (Kudesnik), 2021

8/8/1N2p3/8/1p1kN3/5Q2/8/3K3R

#2

5 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rh4?
      • 1...Ke5
        • 2.Qf6#
      • 1...b3
        • 2.Qc3#
      • 1...e5!
    • 1.Qe3+?
      • 1...Ke5
        • 2.Rh5#
      • 1...Kxe3!
  • Keys
    • 1.Re1!
      • 1...Ke5
        • 2.Qf6#
      • 1...b3
        • 2.Qc3#
      • 1...e5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • K(b);N_GUARD,S_CUTP(c),S_FLIGHT::QAB1(C)
        • P(a);N_GUARD::QAB1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::R(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • R(B);
    • Vars
      • K(b);N_GUARD,S_CUTP(c),S_FLIGHT::QAB1(C)
      • P(a);N_GUARD::QAB1(C)
      • P(c);SBLOCK::QAB1(C)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).