MESON Chess Problem Database

Problem Display
PID: 103982 (k7/1b6/8/3N4/5Q2/8/1K4R1/7R w - - 0 1)

Sandin, Svante

Springaren, 1963

k7/1b6/8/3N4/5Q2/8/1K4R1/7R

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rh7?
      • 1...Bxd5
        • 2.Qf8#
      • 1...Ba6
        • 2.Sb6#
      • 1...Bc6
        • 2.Sb6#
      • 1...Bc8
        • 2.Sb6#
      • 1...Ka7!
    • 1.Qc7?
      • 1...Ka7
        • 2.Ra1#
      • 1...Bc8
        • 2.Sb6#
      • 1...Ba6
        • 2.Sb6#
      • 1...Bc6
        • 2.Sb6#
      • 1...Bxd5!
  • Keys
    • 1.Rg7!
      • 1...Ka7
        • 2.Ra1#
      • 1...Bxd5
        • 2.Qf8#
      • 1...Ba6
        • 2.Sb6#
      • 1...Bc6
        • 2.Sb6#
      • 1...Bc8
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • B(a);N_GUARD,XS(E)::QAR(D)
        • B(a);::S(E)
      • Refutation
        • K(b);P-FLIGHT,P_SPINB(a)
    • Try
      • Q(D);
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::R(A)
        • B(a);::S(E)
      • Refutation
        • B(a);XS(E)
  • Actual
    • R(C);
    • Vars
      • K(b);P-FLIGHT,P_SPINB(a)::R(A)
      • B(a);N_GUARD,XS(E)::QAR(D)
      • B(a);::S(E)
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).