MESON Chess Problem Database

Problem Display
PID: 172413 (8/2p5/1n6/8/1p6/k7/1N6/1K5Q w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/2p5/1n6/8/1p6/k7/1N6/1K5Q

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qf3#
      • 2.Qh3#
  • Tries
    • 1.Qa8+?
      • 1...Kb3
        • 2.Qf3#
      • 1...Sa4
        • 2.Qxa4#
      • 1...Sxa8!
  • Keys
    • 1.Qc6!
      • 1...Kb3
        • 2.Qf3#
      • 1...Sa4
        • 2.Qxa4#
      • 1...Sc4
        • 2.Qa4#
      • 1...Sd5
        • 2.Qa4#
      • 1...Sd7
        • 2.Qa4#
      • 1...Sa8
        • 2.Qa4#
      • 1...Sc8
        • 2.Qa4#
      • 1...b3
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(B)
        • S(c);N_GUARD,P_SPINS(c)::QAR1(B),XS(c)
      • Refutation
        • S(c);XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR(B)
      • S(c);N_GUARD::QAR1(B),XS(c)
      • S(c);N_GUARD::QAR1(B)
      • P(b);OGATEB,SBLOCK::QAB(B)
HTML5 logo

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).