MESON Chess Problem Database

Problem Display
PID: 174533 (8/8/3R1R2/4k3/8/4K3/2PPn3/8 w - - 0 1)

Volchek, Viktor Fedorovich

4th Comm., Day of Chess, 2017

8/8/3R1R2/4k3/8/4K3/2PPn3/8

#2

5 + 2

6490 yacpdb 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.d4#
    • 1...Sg1
      • 2.d4#
    • 1...Sc3
      • 2.d4#
    • 1...Sg3
      • 2.d4#
    • 1...Sf4
      • 2.d4#
  • Tries
    • 1.c4?
      • threat
        • 2.Rde6#
      • 1...Sf4
        • 2.d4#
      • 1...Sd4!
    • 1.d3?
      • 1...Sc1
        • 2.d4#
      • 1...Sg1
        • 2.d4#
      • 1...Sc3
        • 2.d4#
      • 1...Sg3
        • 2.d4#
      • 1...Sf4
        • 2.d4#
      • 1...Sd4!
  • Keys
    • 1.c3!
      • 1...Sxc3
        • 2.d4#
      • 1...Sc1
        • 2.d4#
      • 1...Sg1
        • 2.d4#
      • 1...Sg3
        • 2.d4#
      • 1...Sd4
        • 2.cxd4#
      • 1...Sf4
        • 2.d4#

This anticipates 169241(2017)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(B)
  • Tries
    • Try
      • P(A);
      • Threat
        • R1(D)
      • Vars
        • S(a);N_GUARD::P(B)
      • Refutation
        • S(a);
    • Try
      • P(B);
      • Vars
        • S(a);N_GUARD::P(B)
      • Refutation
        • S(a);
  • Actual
    • P(A);
    • Vars
      • S(a);N_GUARD,XP(A)::P(B)
      • S(a);N_GUARD::P(B)
      • S(a);OGATE::P(A),XS(a)
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).