MESON Chess Problem Database

Problem Display
PID: 119152 (n3Nb2/5R1n/2P1k1P1/3ppp2/8/2N1P3/7Q/6K1 w - - 0 1)

Yakovlev, Yuri Nikolayevich

Canadian Chess Chat, 1981

n3Nb2/5R1n/2P1k1P1/3ppp2/8/2N1P3/7Q/6K1

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Sg7#
    • 1...d4
      • 2.Qa2#
    • 1...f4
      • 2.Qh3#
  • Keys
    • 1.Se4!
      • 1...dxe4
        • 2.Qa2#
      • 1...fxe4
        • 2.Qh3#
      • 1...d4
        • 2.Qa2#
      • 1...Ba3
        • 2.Sg7#
      • 1...Bb4
        • 2.Sg7#
      • 1...Bc5
        • 2.Sxc5#
        • 2.Sg7#
      • 1...Bd6
        • 2.Sg7#
      • 1...Bh6
        • 2.Sc5#
      • 1...Be7
        • 2.Sg7#
      • 1...Bg7
        • 2.Sc5#
        • 2.Sxg7#
      • 1...Sg5
        • 2.Sxg5#
      • 1...Sf6
        • 2.Sg5#
      • 1...Sb6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...f4
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD,SBLOCK::S(H)
    • P(a);OGATEB::QAB(B)
    • P(c);OGATEB::QAB(B)
  • Actual
    • S(C);
    • Vars
      • P(a);OGATEB,XS(C)::QAB(B)
      • P(c);OGATEB,XS(C)::QAB(B)
      • P(a);OGATEB::QAB(B)
      • B(g);N_GUARD::S(H)
      • B(g);N_GUARD::S(C)
      • S(e);N_GUARD::S(C),XS(e)
      • S(e);N_GUARD::S(C)
      • S(f);N_GUARD::S(H)
      • S(f);N_GUARD::S(H),XS(f)
      • P(c);OGATEB::QAB(B)
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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).