MESON Chess Problem Database

Problem Display
PID: 36879 (2bn2K1/5pb1/1Q5N/3p4/3n3R/3Pkpp1/7q/N2RBB2 w - - 0 1)

Rukhlis, Efim Naumovich

1st Prize, Uzbekistan Sports Committee, 1955

2bn2K1/5pb1/1Q5N/3p4/3n3R/3Pkpp1/7q/N2RBB2

#2

9 + 10

3105 FIDE Album (1945-1955) 1964
133 The Problemist Supplement 2007
7551 Vratnica-64 2007
133 The Problemist Supplement 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sc2#
    • 1...Qh1
      • 2.Sc2#
    • 1...Qc2
      • 2.Sxc2#
    • 1...Qh3
      • 2.Sc2#
    • 1...Bxh6
      • 2.Qxd4#
      • 2.Qxh6#
    • 1...Bf8
      • 2.Qxd4#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Ba6
      • 2.Sf5#
    • 1...Bb7
      • 2.Sf5#
    • 1...Se6
      • 2.Sf5#
    • 1...g2
      • 2.Sc2#
    • 1...f6
      • 2.Qxd4#
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qf4#
      • 1...Qxh4
        • 2.Qc1#
      • 1...Bxh6
        • 2.Qe5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bg4
        • 2.Sxg4#
      • 1...Se2
        • 2.Sc2#
      • 1...S4e6
        • 2.Sf5#
      • 1...S8e6
        • 2.Sg4#
      • 1...g2
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::S(A)
    • Q(a);N_GUARD::S(A),XQ(a)
    • B(h);N_GUARD::QAB1(G),XS(e)
    • B(i);N_GUARD::S(H),XB(i)
    • B(i);N_GUARD::S(H)
    • S(j);S_CUTB(i)::S(H)
    • P(d);S_CUTQ(a)::S(A)
    • P(g);S_CUTB(h)::QAB1(G),XS(e)
  • Actual
    • Q(G);N_PINS(e)
    • Threat
      • QAB1(G)
    • Vars
      • Q(a);N_GUARD,XR(F)::QAB(G)
      • B(h);N_GUARD,XS(H)::QAR2(G)
      • B(h);N_GUARD::QAR2(G),XB(h)
      • B(i);N_GUARD::S(H),XB(i)
      • S(e);N_GUARD,S_CUTQ(a)::S(A)
      • S(e);N_GUARD,S_CUTB(i)::S(H)
      • S(j);S_CUTB(i)::S(H)
      • P(d);S_CUTQ(a)::QAB(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).