MESON Chess Problem Database

Problem Display
PID: 225620 (8/6Nr/4B1R1/8/5B1k/2p2nbN/6p1/Kn1bq3 w - - 0 1)

Mikan, Ilja

Praca, 1952

8/6Nr/4B1R1/8/5B1k/2p2nbN/6p1/Kn1bq3

#2

6 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Bxg3#
    • 1...Qf1
      • 2.Bxg3#
    • 1...Qg1
      • 2.Bxg3#
    • 1...Qh1
      • 2.Bxg3#
    • 1...Qe2
      • 2.Bxg3#
    • 1...Qe3
      • 2.Bxg3#
    • 1...Qe4
      • 2.Bxg3#
    • 1...Rh6
      • 2.Rxh6#
    • 1...Rxg7
      • 2.Rh6#
    • 1...Sg1
      • 2.Bg5#
    • 1...Sd2
      • 2.Bg5#
    • 1...Sh2
      • 2.Bg5#
    • 1...Sd4
      • 2.Bg5#
    • 1...Se5
      • 2.Bg5#
    • 1...Sg5
      • 2.Bxg5#
  • Keys
    • 1.Sg1!
      • threat
        • 2.Rg4#
      • 1...Qxg1
        • 2.Bxg3#
      • 1...Qxe6
        • 2.Bxg3#
      • 1...Rxg7
        • 2.Rh6#
      • 1...Sxg1
        • 2.Bg5#
      • 1...Sfd2
        • 2.Bg5#
      • 1...Sh2
        • 2.Bg5#
      • 1...Sd4
        • 2.Bg5#
      • 1...Se5
        • 2.Bg5#
      • 1...Sg5
        • 2.Bxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD::B(C),XB(g)
    • R(i);N_GUARD::R(E),XR(i)
    • R(i);N_GUARD,XS(F)::R(E)
    • S(f);N_GUARD::B(C)
    • S(f);N_GUARD::B(C),XS(f)
  • Actual
    • S(B);
    • Threat
      • R1(E)
    • Vars
      • Q(c);N_GUARD,XS(B)::B(C),XB(g)
      • Q(c);N_GUARD,XB(D)::B(C),XB(g)
      • R(i);N_GUARD,XS(F)::R(E)
      • S(f);N_GUARD,XS(B)::B(C)
      • S(f);N_GUARD::B(C)
      • S(f);N_GUARD::B(C),XS(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).