MESON Chess Problem Database

Problem Display
PID: 230898 (K7/Q7/8/Nkp5/1p6/3R4/8/8 w - - 0 1)

Andrievski, Y

Kudesnik, 1998

K7/Q7/8/Nkp5/1p6/3R4/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • 1...Kxc4
        • 2.Qa6#
      • 1...Kc6
        • 2.Qb6#
        • 2.Qb7#
        • 2.Qd7#
      • 1...b3!
    • 1.Sc6?
      • 1...Kc4
        • 2.Qa6#
      • 1...Kxc6
        • 2.Qb7#
      • 1...c4
        • 2.Sd4#
      • 1...b3!
    • 1.Qa6+?
      • 1...Ka4
        • 2.Sb3#
        • 2.Sc4#
        • 2.Sc6#
        • 2.Sb7#
      • 1...Kxa6!
  • Keys
    • 1.Sb3!
      • 1...Kc4
        • 2.Qa6#
      • 1...Kc6
        • 2.Qxc5#
        • 2.Qb7#
      • 1...c4
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);S_FLIGHT,XS(B)::QAB(C)
      • Refutation
        • P(a);
    • Try
      • S(B);
      • Vars
        • K(b);S_FLIGHT::QAB(C)
        • K(b);S_FLIGHT,XS(B)::QAB1(C)
        • P(c);N_GUARD,SBLOCK::S(B)
      • Refutation
        • P(a);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::QAB(C)
      • P(c);N_GUARD,SBLOCK::S(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).