MESON Chess Problem Database

Problem Display
PID: 7440 (B6K/k7/1N6/8/8/8/pQ6/8 w - - 0 1)

Ivanov, Vadim Aleksandrovich

2nd Prize=, Bron MT, 1990

B6K/k7/1N6/8/8/8/pQ6/8

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sc8+?
      • 1...Ka6
        • 2.Qb6#
      • 1...Kxa8!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qa3#
        • 2.Qxa2#
        • 2.Qb7#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kxa8
        • 2.Qb8#
      • 1...a1Q
        • 2.Qxa1#
      • 1...a1S
        • 2.Qxa1#
        • 2.Qa3#
        • 2.Qa2#
        • 2.Qb7#
      • 1...a1B
        • 2.Qxa1#
      • 1...a1R
        • 2.Qxa1#
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,XB(C)
  • Actual
    • S(B);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);P-FLIGHT,XB(C)::QAR1(A)
      • P(a);OGATEB,P_PINQ(A)::QAR(A),XQ(a)
      • P(a);OGATEB,P_PINQ(A)::QAR(A),XB(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).