MESON Chess Problem Database

Problem Display
PID: 7286 (8/1R4K1/n3PN2/2N2k1p/5p1p/8/6bB/3BQ1Rq w - - 0 1)

Dyachuk, Vasyl Vasilovich

Kopyl, Valery Volodimirovich

4th Prize, Netanya (Internet), 1999

8/1R4K1/n3PN2/2N2k1p/5p1p/8/6bB/3BQ1Rq

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qe5#
    • 1...f3
      • 2.Qe5#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qe5#
      • 1...Kg5
        • 2.Qe5#
      • 1...Be4!
    • 1.Scd7?
      • threat
        • 2.Qe5#
      • 1...Kg5
        • 2.Qe5#
      • 1...Be4!
    • 1.Sh7?
      • threat
        • 2.Rf7#
      • 1...Bxb7
        • 2.Rg5#
      • 1...Be4
        • 2.Rg5#
      • 1...f3
        • 2.Qe4#
      • 1...Sc7!
    • 1.Bc2+?
      • 1...Kg5
        • 2.Qe5#
      • 1...Be4!
    • 1.Bg4+?
      • 1...Kg5
        • 2.Qe5#
      • 1...hxg4!
    • 1.Qe4+?
      • 1...Kg5
        • 2.Sh7#
        • 2.Bxf4#
        • 2.Qd5#
        • 2.Qg6#
        • 2.Qxf4#
        • 2.Qe5#
      • 1...Bxe4!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Sh7#
      • 1...Kg5
        • 2.Sfe4#
        • 2.Sh7#
        • 2.Qe5#
      • 1...Be4
        • 2.Sfd7#
      • 1...f3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(e);P-FLIGHT,P_SPINB(b)::QAR2(B)
    • P(c);::QAR1(B)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • K(e);P-FLIGHT,P_SPINB(b)::QAR2(B)
      • Refutation
        • B(b);
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • K(e);P-FLIGHT,P_SPINB(b)::QAR2(B)
      • Refutation
        • B(b);
    • Try
      • S(G);
      • Threat
        • R(H)
      • Vars
        • B(b);OGATE,XR(H)::R1(C)
        • B(b);OGATE::R1(C)
        • P(c);S_CUTB(b)::QAB1(B)
      • Refutation
        • S(g);
    • Try
      • B(A);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINB(b)::QAR2(B)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • B(A);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR2(B)
      • Refutation
        • P(f);XB(A)
    • Try
      • Q(B);CHECK
      • Refutation
        • B(b);XQ(B)
  • Actual
    • R(H);
    • Threat
      • R(H)+S(G)
    • Vars
      • B(b);::R(H)+S(G)
      • P(c);::QAR1(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).