MESON Chess Problem Database

Problem Display
PID: 159220 (8/5K1p/4Q3/4B1kn/8/5P2/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

8/5K1p/4Q3/4B1kn/8/5P2/8/8

#2

4 + 3

15148 Sadier Collection 2016
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kh4
      • 2.Qg4#
    • 1...h6
      • 2.Qg4#
  • Tries
    • 1.Qg6+?
      • 1...Kh4
        • 2.Qg4#
      • 1...hxg6!
  • Keys
    • 1.Qh3!
      • 1...Kh6
        • 2.Bf4#
      • 1...Sg3
        • 2.f4#
      • 1...Sf4
        • 2.Bf6#
      • 1...Sf6
        • 2.f4#
      • 1...Sg7
        • 2.f4#
      • 1...h6
        • 2.Qg4#

Anticipated by 240502(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR1(C)
    • P(c);SBLOCK::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • P(c);XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(a);P_SPINS(b),S_FLIGHT::B(B)
      • S(b);N_GUARD::P(A)
      • S(b);N_GUARD,SBLOCK::B(B)
      • P(c);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).