MESON Chess Problem Database

Problem Display
PID: 172289 (8/K1p5/p7/1k6/4P3/1P6/3Q4/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

8/K1p5/p7/1k6/4P3/1P6/3Q4/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qd5#
  • Tries
    • 1.Qa5+?
      • 1...Kc6
        • 2.Qd5#
      • 1...Kxa5!
  • Keys
    • 1.Qd4!
      • 1...Ka5
        • 2.Qc5#
        • 2.Qa4#
      • 1...Kc6
        • 2.Qd5#
      • 1...a5
        • 2.Qc4#
      • 1...c5
        • 2.Qa4#
      • 1...c6
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • P(b);SBLOCK::QAB1(A)
      • P(c);SBLOCK::QAB1(A)
      • P(c);N_GUARD::QAR1(A)
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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).