MESON Chess Problem Database

Problem Display
PID: 148643 (6b1/8/pK1N1pp1/2R5/1p1kP1nr/3P4/3QP3/8 w - - 0 1)

Amirov, Talip Khasanovich

Lukyanov, Valentin Volodimirovich

2nd Prize, Novi Temi, 1968-1969

6b1/8/pK1N1pp1/2R5/1p1kP1nr/3P4/3QP3/8

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.dxc4#
    • 1...Bd5
      • 2.Rxd5#
    • 1...Bh7
      • 2.Rd5#
    • 1...Sf2
      • 2.e3#
    • 1...Sh2
      • 2.e3#
    • 1...Se3
      • 2.Qb2#
    • 1...Se5
      • 2.e3#
    • 1...Sh6
      • 2.e3#
    • 1...a5
      • 2.Sb5#
    • 1...g5
      • 2.Sf5#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Rc4#
        • 2.Rd5#
      • 1...Rh5
        • 2.Rc4#
      • 1...Se3
        • 2.Qb2#
      • 1...Se5
        • 2.Rd5#
        • 2.e3#
      • 1...Bxf7!
  • Keys
    • 1.Qf4!
      • threat
        • 2.e5#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Bd5
        • 2.exd5#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sh2
        • 2.Qf2#
      • 1...Se3
        • 2.Qxf6#
      • 1...Se5
        • 2.Qf2#
      • 1...Sh6
        • 2.Qf2#
      • 1...g5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(h);OGATE::QAR(A)+P(C),XB(h)
    • B(h);N_GUARD::R1(E),XB(h)
    • B(h);N_GUARD::R1(E)
    • S(c);N_GUARD::P(B)
    • S(c);SBLOCK::QAB(A)
    • P(e);N_GUARD::S(G)
    • P(g);N_GUARD::S(G)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::R1(E)
        • S(c);SBLOCK::QAB(A)
      • Refutation
        • B(h);XS(G)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+P(D)
    • Vars
      • B(h);N_GUARD::R1(E),XB(h)
      • B(h);OGATE::QAR(A)+P(D),XB(h)
      • S(c);N_GUARD::QAB(A),XS(c)
      • S(c);N_GUARD::QAB(A)
      • S(c);N_GUARD,SBLOCK::QAB(A),XP(f)
      • P(g);N_GUARD::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).