MESON Chess Problem Database

Problem Display
PID: 67246 (1r3b2/6n1/Q3P3/Bnp4p/N1k1P2R/2p1pN2/2P5/7K w - - 0 1)

Pilchenko, Viacheslav Karlovich

Shavirin, Valery Mikhailovich

1st Prize, Valery Kirillov-50 JT, 2001

1r3b2/6n1/Q3P3/Bnp4p/N1k1P2R/2p1pN2/2P5/7K

#2

9 + 9

102 Probleemblad 2006
15174 FIDE Album (2001-2003) 2011
56 The Problemist 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Sxb6#
    • 1...Ra8
      • 2.Sb6#
    • 1...Rc8
      • 2.Sb6#
    • 1...Rd8
      • 2.Sb6#
    • 1...Re8
      • 2.Sb6#
    • 1...Sxe6
      • 2.Qxe6#
  • Tries
    • 1.Sxc3?
      • threat
        • 2.e5#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Rd8
        • 2.Qxb5#
      • 1...Sf5
        • 2.exf5#
      • 1...Be7!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qd5#
      • 1...Rd8
        • 2.Sb6#
      • 1...Sa3
        • 2.e5#
      • 1...Sd4
        • 2.Se5#
      • 1...Sd6
        • 2.Qxc5#
      • 1...Sa7
        • 2.e5#
      • 1...Sc7
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(h);N_GUARD::S(D),XR(h)
    • R(h);N_GUARD::S(D)
    • S(g);OGATE,XP(I)::QAB(H),XS(g)
  • Tries
    • Try
      • S(D);XP(a)
      • Threat
        • R(F)+P(E)
      • Vars
        • S(g);OGATE,XP(I)::QAB(H),XS(g)
        • R(h);N_GUARD::QAB1(H),XS(d)
        • S(g);OGATE::R(F)+P(E),XS(g)
      • Refutation
        • B(i);
  • Actual
    • Q(H);N_PINS(d),P_PINP(e)
    • Threat
      • QAB1(H)
    • Vars
      • R(h);N_GUARD::S(D)
      • S(d);N_GUARD::R(F)+P(E)
      • S(d);SBLOCK::S(C)
      • S(d);S_CUTB(i)::QAR1(H),XP(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).