MESON Chess Problem Database

Problem Display
PID: 6674 (4K3/2ppP3/2p3NR/2rk1P2/Q2p3R/1pPN2B1/3n1b2/1B4q1 w - - 0 1)

Barulin, Mikhail Mikhailovich

Shakhmaty v SSSR, 1932

4K3/2ppP3/2p3NR/2rk1P2/Q2p3R/1pPN2B1/3n1b2/1B4q1

#2

11 + 10

23 Die Schwalbe 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Sb4#
    • 1...Se4
      • 2.Sgf4#
    • 1...dxc3
      • 2.Sb4#
      • 2.Sgf4#
    • 1...d6
      • 2.Sdf4#
  • Tries
    • 1.c4+?
      • 1...Sxc4
        • 2.Sb4#
      • 1...Rxc4!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxc5#
      • 1...Rxc3
        • 2.Sdf4#
      • 1...dxc3
        • 2.Sgf4#
      • 1...Rc4
        • 2.Sdf4#
      • 1...Ra5
        • 2.Sdf4#
      • 1...Rb5
        • 2.Sdf4#
      • 1...Se4
        • 2.Sgf4#
      • 1...d6
        • 2.Sdf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(b);SBLOCK::S(C)
    • S(b);SBLOCK::S(H)
    • P(j);SBLOCK::S(C)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • S(b);SBLOCK,XP(B)::S(C)
      • Refutation
        • R(f);XP(B)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XR(f)
    • Vars
      • R(f);XP(B)::S(C)
      • P(e);XP(B)::S(H)
      • R(f);::S(C)
      • S(b);SBLOCK::S(H)
      • P(j);SBLOCK::S(C)
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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).