MESON Chess Problem Database

Problem Display
PID: 65849 (2b1r1N1/6b1/3p4/1BPk1P1R/2R2P1Q/r3p3/8/3N3K w - - 0 1)

Lider, Valentin Viktorovich

2nd Prize, De Waarheid, 1978

2b1r1N1/6b1/3p4/1BPk1P1R/2R2P1Q/r3p3/8/3N3K

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Sxe7#
    • 1...Rd8
      • 2.Se7#
    • 1...Rf8
      • 2.Se7#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Bh6
      • 2.Sf6#
    • 1...Bf8
      • 2.Sf6#
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxd6#
      • 1...Bxf6
        • 2.Sxf6#
      • 1...dxc5
        • 2.Qc6#
      • 1...Ra6
        • 2.Sc3#
      • 1...Re6
        • 2.fxe6#
      • 1...Rd8
        • 2.Se7#
      • 1...Bf8
        • 2.Qd4#
      • 1...Be6
        • 2.fxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(g);N_GUARD::S(J),XR(g)
    • R(g);N_GUARD::S(J)
    • B(e);N_GUARD::S(J),XB(e)
    • B(e);N_GUARD::S(J)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XP(d)
    • Vars
      • B(e);XQ(E)::S(J),XB(e)
      • P(d);OGATE,XP(G)::QAB1(E)
      • R(a);N_GUARD::S(A)
      • R(g);OGATE::R(I)+P(H),XR(g)
      • R(g);N_GUARD::S(J)
      • B(e);N_GUARD::QAR1(E)
      • B(f);OGATE::R(I)+P(H),XB(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).