MESON Chess Problem Database

Problem Display
PID: 235508 (KbB5/R7/5pr1/3NP3/4k2N/8/3Q4/4r2b w - - 0 1)

Dikusarov, Andrey Nikolayovich

Schach, 2007

KbB5/R7/5pr1/3NP3/4k2N/8/3Q4/4r2b

#2

7 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Bf5#
    • 1...fxe5
      • 2.Sc3#
      • 2.Bf5#
      • 2.Ra4#
  • Tries
    • 1.Re7?
      • threat
        • 2.Sc3#
        • 2.Bf5#
      • 1...Rc1
        • 2.Bf5#
      • 1...Rf1
        • 2.Sc3#
      • 1...Re3
        • 2.Bf5#
      • 1...Rg3
        • 2.Sxf6#
        • 2.Bf5#
      • 1...Rg5
        • 2.Sc3#
        • 2.Sxf6#
      • 1...f5
        • 2.Sc3#
        • 2.Bxf5#
      • 1...Ra1+!
  • Keys
    • 1.Ra5!
      • threat
        • 2.Sc3#
      • 1...Kxe5
        • 2.Qf4#
      • 1...Bxe5
        • 2.Bf5#
      • 1...Rc1
        • 2.Qe3#
      • 1...Re3
        • 2.Qxe3#
      • 1...Rg3
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK,XP(D)::B(G)
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::B(G)
        • R(a);::S(C)
      • Refutation
        • R(a);CHECK
  • Actual
    • R(E);
    • Threat
      • S(C)
    • Vars
      • K(c);P-FLIGHT,P_PINS(C),XP(D)::QAB1(A)
      • B(f);SBLOCK,XP(D)::B(G)
      • R(a);N_GUARD::QAR1(A)
      • R(a);N_GUARD::QAR1(A),XR(a)
      • R(e);N_GUARD::S(C),XP(d)
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).