MESON Chess Problem Database

Problem Display
PID: 35821 (b4B2/n3P3/r1nN3K/p3P2R/r2k2p1/2R5/1P6/7B w - - 0 1)

Shanshin, Valery Yurevich

1st Prize, Banska Bystrica (BABY)-50 JT, 1993

b4B2/n3P3/r1nN3K/p3P2R/r2k2p1/2R5/1P6/7B

#2

9 + 8

4393 Uralski Problemist 1993
3681 FIDE Album (1992-1994) 2001
102 Probleemblad 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Sxb5#
    • 1...Sc8
      • 2.Sb5#
  • Tries
    • 1.Bg7?
      • threat
        • 2.Sf5#
      • 1...Sxe5
        • 2.Bxe5#
      • 1...Sxe7
        • 2.e6#
      • 1...Sb4
        • 2.e6#
      • 1...Sb8
        • 2.e6#
      • 1...Sd8
        • 2.e6#
      • 1...Rc4!
    • 1.e8Q?
      • threat
        • 2.Sf5#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Se7
        • 2.Qxa4#
      • 1...Sb8
        • 2.Qxa4#
      • 1...Sd8
        • 2.Qxa4#
      • 1...Sb4!
  • Keys
    • 1.e6!
      • threat
        • 2.Rd5#
      • 1...Sxe7
        • 2.Bg7#
      • 1...Sb4
        • 2.Bg7#
      • 1...Se5
        • 2.Sf5#
      • 1...Sb8
        • 2.Bg7#
      • 1...Sd8
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(g);N_GUARD::S(F),XS(g)
    • S(g);N_GUARD::S(F)
  • Tries
    • Try
      • B(I);
      • Threat
        • S(F)
      • Vars
        • S(f);OGATE,P_PINS(F),P_SPINS(f),XP(D)::B(I),XS(f)
        • S(f);N_GUARD,P_PINS(F),XP(H)::B(I)+P(D)
        • S(f);N_GUARD,P_PINS(F)::B(I)+P(D)
      • Refutation
        • R(a);
    • Try
      • P(H);
      • Threat
        • S(F)
      • Vars
        • S(f);OGATE,P_PINS(F),XP(D)::QAB1(H),XS(f)
        • S(f);OGATE,P_PINS(F)::QAR(H),XR(a)
      • Refutation
        • S(f);P_PINS(F)
  • Actual
    • P(D);
    • Threat
      • R1(E)
    • Vars
      • S(f);N_GUARD,XP(H)::B(I)
      • S(f);N_GUARD::B(I)
      • S(f);SBLOCK::S(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).