MESON Chess Problem Database

Problem Display
PID: 163394 (8/6K1/pQ2pp2/2Nb2k1/3p2Pp/2n4P/1B2P3/r4R2 w - - 0 1)

Jankevics, Karlis

Sachmatija, 2004

8/6K1/pQ2pp2/2Nb2k1/3p2Pp/2n4P/1B2P3/r4R2

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Bxc1#
    • 1...Ra3
      • 2.Bc1#
    • 1...Ra4
      • 2.Bc1#
    • 1...Ra5
      • 2.Bc1#
    • 1...Bh1
      • 2.Sxe6#
    • 1...Bg2
      • 2.Sxe6#
    • 1...Bf3
      • 2.Sxe6#
    • 1...Be4
      • 2.Sxe6#
    • 1...Bc6
      • 2.Sxe6#
    • 1...Bb7
      • 2.Sxe6#
    • 1...Ba8
      • 2.Sxe6#
    • 1...e5
      • 2.Rf5#
      • 2.Qxf6#
    • 1...f5
      • 2.Qd8#
  • Tries
    • 1.Qxe6?
      • threat
        • 2.Rf5#
        • 2.Qf5#
        • 2.Qxf6#
      • 1...Bxe6
        • 2.Sxe6#
      • 1...Bf3
        • 2.Qf5#
        • 2.Qxf6#
      • 1...Be4
        • 2.Qxf6#
      • 1...Se4
        • 2.Rf5#
        • 2.Qf5#
      • 1...f5
        • 2.Rxf5#
        • 2.Qxf5#
        • 2.Qf6#
        • 2.Qg6#
        • 2.Qh6#
        • 2.Qe7#
      • 1...Rxf1!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Sxe6#
      • 1...Rxa5
        • 2.Bc1#
      • 1...Sb5
        • 2.Qd2#
      • 1...e5
        • 2.Rf5#
      • 1...f5
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • R(a);N_GUARD::B(B),XR(a)
    • R(a);N_GUARD::B(B)
    • B(e);N_GUARD::S(F),XP(h)
    • P(i);OGATEB::QAB(G)
  • Tries
    • Try
      • Q(G);XP(h)
      • Threat
        • DUALS(3)
      • Vars
        • B(e);XQ(G)::S(F),XB(e)
        • B(e);::QAB1(G),XP(i)
      • Refutation
        • R(a);XR(A)
  • Actual
    • Q(G);
    • Threat
      • S(F),XP(h)
    • Vars
      • R(a);N_GUARD,XQ(G)::B(B)
      • S(b);OGATE::QAB(G)
      • P(h);N_GUARD::R1(A)
      • P(i);OGATEB::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).