MESON Chess Problem Database

Problem Display
PID: 172532 (3Q4/4p3/1n2k1K1/8/8/3P2B1/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2002

3Q4/4p3/1n2k1K1/8/8/3P2B1/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qc8#
    • 1...Sd7
      • 2.Qg8#
  • Tries
    • 1.Qxe7+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Kxe7!
  • Keys
    • 1.d4!
      • 1...Sd7
        • 2.Qg8#
      • 1...Sc4
        • 2.d5#
      • 1...Sa4
        • 2.d5#
      • 1...Sd5
        • 2.Qc8#
      • 1...Sa8
        • 2.d5#
      • 1...Sc8
        • 2.d5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::QAB(D)
    • S(a);SBLOCK::QAB(D)
  • Tries
    • Try
      • Q(D);CHECK,XP(c)
      • Vars
        • K(b);S_FLIGHT::QAR1(D)
      • Refutation
        • K(b);P-FLIGHT,XQ(D)
  • Actual
    • P(A);
    • Vars
      • S(a);SBLOCK::QAB(D)
      • S(a);N_GUARD::P(A)
      • S(a);N_GUARD,SBLOCK::QAB(D)
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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).