MESON Chess Problem Database

Problem Display
PID: 173119 (3R4/4N3/2p2p2/K1pN2p1/n1kp1pR1/2P4Q/P7/8 w - - 0 1)

Barulin, Mikhail Mikhailovich

3rd Prize, 64 Shakhmatnoe obozrenie, 1934

3R4/4N3/2p2p2/K1pN2p1/n1kp1pR1/2P4Q/P7/8

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Sb6#
    • 1...Sxc3
      • 2.Sb6#
    • 1...Sb6
      • 2.Sxb6#
    • 1...dxc3
      • 2.Se3#
    • 1...f3
      • 2.Qf1#
  • Tries
    • 1.Sxc6?
      • 1...Sxc3
        • 2.Sb6#
      • 1...dxc3
        • 2.Se3#
        • 2.Qf1#
      • 1...f3
        • 2.Qf1#
      • 1...Sb2
        • 2.Sb6#
      • 1...Sb6
        • 2.Sxb6#
      • 1...f5
        • 2.Se5#
      • 1...d3!
  • Keys
    • 1.Sf5!
      • 1...Sxc3
        • 2.Sb6#
      • 1...dxc3
        • 2.Sde3#
        • 2.Qf1#
      • 1...cxd5
        • 2.Sd6#
      • 1...f3
        • 2.Qf1#
      • 1...Sb2
        • 2.Sb6#
      • 1...Sb6
        • 2.Sxb6#
      • 1...d3
        • 2.Sfe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::S(F)
    • S(a);N_GUARD,XP(B)::S(F)
    • S(a);N_GUARD::S(F),XS(a)
    • P(c);N_GUARD,P_SPINP(d),SBLOCK,XP(B)::S(F)
    • P(d);P_SPINP(c)::QAB(C)
  • Tries
    • Try
      • S(G);XP(g)
      • Vars
        • S(a);N_GUARD,XP(B)::S(F)
        • P(d);P_SPINP(c)::QAB(C)
        • S(a);N_GUARD::S(F)
        • S(a);N_GUARD::S(F),XS(a)
        • P(h);N_GUARD::S(G)
      • Refutation
        • P(c);P_SPINP(d)
  • Actual
    • S(G);
    • Vars
      • S(a);N_GUARD,XP(B)::S(F)
      • P(g);SBLOCK,XS(F)::S(G)
      • P(d);P_SPINP(c)::QAB(C)
      • S(a);N_GUARD::S(F)
      • S(a);N_GUARD::S(F),XS(a)
      • P(c);N_GUARD,P_SPINP(d),SBLOCK::S(G)
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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).