MESON Chess Problem Database

Problem Display
PID: 134556 (4k1b1/nrp2NP1/r2p1BP1/1q2N1K1/B2Q4/4R3/8/3R4 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Kopyl, Valery Volodimirovich

Mat Plus, 2008

4k1b1/nrp2NP1/r2p1BP1/1q2N1K1/B2Q4/4R3/8/3R4

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Sd3#
      • 2.Sf3#
      • 2.Sc4#
      • 2.Sg4#
      • 2.Sxd7#
      • 2.Bxd7#
    • 1...Bxf7
      • 2.gxf7#
    • 1...dxe5
      • 2.Qd8#
    • 1...c6
      • 2.Sxd6#
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qe6#
      • 1...Bxf7
        • 2.gxf7#
      • 1...dxe5
        • 2.Rd8#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sc8
        • 2.Qxc8#
      • 1...d5
        • 2.Sc6#
      • 1...c5
        • 2.Sd7#
      • 1...c6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(h);OGATE,XS(I)::P(H),XB(h)
    • P(c);OGATE,P_SPINP(c),XS(E)::QAR1(D)
    • P(f);N_GUARD,N_SPINQ(a),S_CUTR(b)::S(I),XP(c)
  • Actual
    • Q(D);
    • Threat
      • QAR2(D)
    • Vars
      • B(h);OGATE,XS(I)::P(H),XB(h)
      • P(c);OGATE,P_SPINP(c),XS(E)::R1(A)
      • S(d);N_SPINQ(a),S_CUTQ(a)::QAB1(D)
      • S(d);N_GUARD::QAR2(D),XS(d)
      • P(c);N_PINS(E)::R(B)+S(E)
      • P(f);N_PINS(E)::R(B)+S(E)
      • P(f);N_GUARD,N_SPINQ(a),S_CUTR(b)::S(I),XP(c)
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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).