MESON Chess Problem Database

Problem Display
PID: 222779 (8/p2B4/K7/2Nk4/3pN3/5R2/8/8 w - - 0 1)

Klark, Dmitry Vasilevich

Raduga, 1884

8/p2B4/K7/2Nk4/3pN3/5R2/8/8

#2

5 + 3

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rf5#
  • Tries
    • 1.Be6+?
      • 1...Ke5
        • 2.Rf5#
      • 1...Kc6!
  • Keys
    • 1.Sd3!
      • 1...Kc4
        • 2.Be6#
      • 1...Kxe4
        • 2.Bc6#

This anticipates 78587(2001)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::R1(A)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT::B(E)
      • K(b);S_FLIGHT,XS(B)::B(E)
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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).