MESON Chess Problem Database

Problem Display
PID: 248852 (7B/3p4/K7/2k5/4Q3/P7/8/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Zadachi i Etyudi, 2003

7B/3p4/K7/2k5/4Q3/P7/8/8

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Be5?
      • 1...d5
        • 2.Qc2#
      • 1...d6!
    • 1.Qb7?
      • 1...Kc4
        • 2.Qb5#
      • 1...d5
        • 2.Qc7#
      • 1...d6
        • 2.Qb5#
      • 1...Kd6!
    • 1.Qe5+?
      • 1...Kc4
        • 2.Qb5#
      • 1...d5
        • 2.Qc7#
      • 1...Kc6!
  • Keys
    • 1.Kb7!
      • 1...Kb5
        • 2.Qb4#
      • 1...Kd6
        • 2.Qe5#
      • 1...d5
        • 2.Qb4#
      • 1...d6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Vars
        • P(b);SBLOCK::QAR(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
        • P(b);SBLOCK::QAR2(B)
        • P(b);SBLOCK::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(B)
        • P(b);P_SPINP(b),SBLOCK::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::QAB1(B)
      • P(b);SBLOCK::QAB1(B)
      • P(b);N_GUARD::QAR1(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).