MESON Chess Problem Database

Problem Display
PID: 172311 (8/5p2/6pp/6k1/4Q3/7K/5N2/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

8/5p2/6pp/6k1/4Q3/7K/5N2/8

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kh5
      • 2.Qg4#
      • 2.Qh4#
    • 1...f5
      • 2.Qh4#
    • 1...f6
      • 2.Qg4#
  • Tries
    • 1.Kg3?
      • 1...Kh5
        • 2.Qg4#
        • 2.Qh4#
      • 1...h5
        • 2.Qf4#
      • 1...f5
        • 2.Qh4#
      • 1...f6
        • 2.Qg4#
      • 1...Kf6!
    • 1.Qf4+?
      • 1...Kh5
        • 2.Qg4#
        • 2.Qh4#
      • 1...Kxf4!
  • Keys
    • 1.Sd3!
      • 1...Kh5
        • 2.Qg4#
        • 2.Qh4#
      • 1...Kf6
        • 2.Qe5#
      • 1...h5
        • 2.Qf4#
      • 1...f5
        • 2.Qh4#
      • 1...f6
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAB1(C)
    • P(d);SBLOCK::QAR1(C)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(c);SBLOCK::QAB1(C)
        • P(d);SBLOCK::QAB1(C)
        • P(d);SBLOCK::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • P(c);SBLOCK::QAB1(C)
      • P(d);SBLOCK::QAB1(C)
      • P(d);SBLOCK::QAR1(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).