MESON Chess Problem Database

Problem Display
PID: 172535 (7q/6k1/8/3B2P1/4Q2p/8/8/7K w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2003

7q/6k1/8/3B2P1/4Q2p/8/8/7K

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qg6+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kxg6!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qf7#
      • 1...Kh7
        • 2.Qh6#
      • 1...Kf8
        • 2.Qf7#
      • 1...Qh5
        • 2.Qg8#
      • 1...Qh6
        • 2.Qg8#
        • 2.Qxh6#
      • 1...Qa8
        • 2.Qh6#
      • 1...Qb8
        • 2.Qh6#
      • 1...Qc8
        • 2.Qh6#
      • 1...Qd8
        • 2.Qh6#
      • 1...Qe8
        • 2.Qh6#
      • 1...Qg8
        • 2.Qxg8#
        • 2.Qh6#
      • 1...Qh7
        • 2.Qf6#
      • 1...Qf8
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::QAR1(B)
      • Q(c);N_GUARD::QAR1(B)
      • Q(c);N_GUARD,P_PINB(C)::QAB1(B)
      • Q(c);N_GUARD::QAB1(B)
      • Q(c);SBLOCK::QAB1(B)
      • Q(c);N_GUARD,SBLOCK::QAB1(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).