MESON Chess Problem Database

Problem Display
PID: 246654 (3K2n1/8/2pk4/Q7/5N2/P7/8/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Magadanskaya Pravda, 1999

3K2n1/8/2pk4/Q7/5N2/P7/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qc7#
  • Tries
    • 1.Qd2+?
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke5!
    • 1.Qg5?
      • 1...c5
        • 2.Qd5#
      • 1...Sh6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...Sf6!
    • 1.Qa7?
      • threat
        • 2.Qd4#
      • 1...c5
        • 2.Qc7#
      • 1...Sf6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...Ke5!
  • Keys
    • 1.Qe1!
      • 1...Kc5
        • 2.Qb4#
      • 1...Sf6
        • 2.Qe7#
      • 1...Sh6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...c5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);N_GUARD::QAR1(C)
        • S(c);N_GUARD::QAB1(C)
        • S(c);N_GUARD::QAB1(C),XS(c)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • P(a);::QAB1(C)
        • S(c);N_GUARD::QAB1(C)
        • S(c);N_GUARD::QAB1(C),XS(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • S(c);N_GUARD::QAB1(C)
      • S(c);N_GUARD::QAB1(C),XS(c)
      • P(a);SBLOCK::QAR1(C)
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).