MESON Chess Problem Database

Problem Display
PID: 39545 (1R1R4/8/rNpNr1p1/2k5/p1n1p3/p1P1n3/7Q/2b2BBK w - - 0 1)

Kriuckov, Sergey Petrovic

4th Comm., BCF 022. Ty., 1936-1937

1R1R4/8/rNpNr1p1/2k5/p1n1p3/p1P1n3/7Q/2b2BBK

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Bxe3#
    • 1...Se5
      • 2.Sxe4#
    • 1...Sxb6
      • 2.Sb7#
  • Tries
    • 1.Qe5+?
      • 1...Sxe5
        • 2.Sxe4#
      • 1...Rxe5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qxc4#
      • 1...Sxb6
        • 2.Sb7#
      • 1...Sxd6
        • 2.Sd7#
      • 1...Sb2
        • 2.Qxa3#
      • 1...Sd2
        • 2.Bxe3#
      • 1...Sa5
        • 2.Sxa4#
      • 1...Se5
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD,S_CUTB(a)::B(B),XS(c)
    • S(e);S_CUTR(j)::S(G),XP(f)
    • S(e);SBLOCK,XS(F)::S(G)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • S(e);XQ(D)::S(G),XP(f)
      • Refutation
        • R(j);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D),XS(e)
    • Vars
      • S(e);SBLOCK,XS(F)::S(G)
      • S(e);SBLOCK,XS(G)::S(F)
      • S(e);N_GUARD,S_CUTB(a)::QAB(D),XP(b)
      • S(e);N_GUARD,S_CUTB(a)::B(B),XS(c)
      • S(e);S_CUTR(h)::S(F),XP(d)
      • S(e);S_CUTR(j)::S(G),XP(f)
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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).