MESON Chess Problem Database

Problem Display
PID: 269022 (2K5/1N4p1/RQ4p1/1P3k1b/3R1n2/5pBN/5Pn1/8 w - - 0 1)

Vinokurov, Vadim Konstantinovich

Shakhmatnaya kompozitsiya, 1997

2K5/1N4p1/RQ4p1/1P3k1b/3R1n2/5pBN/5Pn1/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Qe6#
    • 1...Ke5
      • 2.Qc5#
    • 1...Se2
      • 2.Qc5#
      • 2.Qe6#
    • 1...Sd3
      • 2.Qe6#
    • 1...Sxh3
      • 2.Qc5#
    • 1...Sd5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
  • Tries
    • 1.Rxf4+?
      • 1...Ke5
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qe6#
      • 1...Sxf4!
    • 1.Rd5+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Sxd5
        • 2.Qe6#
      • 1...Kg4!
    • 1.Qc5+?
      • 1...Sd5
        • 2.Qc2#
        • 2.Qxd5#
      • 1...Kg4!
    • 1.Qf6+?
      • 1...Kg4
        • 2.Qe6#
      • 1...gxf6!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qg5#
      • 1...Kg4
        • 2.Qd7#
      • 1...Ke5
        • 2.Qd5#
      • 1...Sxh3
        • 2.Qd5#
      • 1...Se6
        • 2.Sd6#
      • 1...g5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(d);P_SPINS(c),S_FLIGHT::QAB(G)
    • K(d);N_GUARD,P-FLIGHT,P_SPINS(c)::QAR2(G)
    • S(c);N_GUARD::QAB1(G)
    • S(c);N_GUARD,XS(C)::QAR(G)
    • S(c);N_GUARD::QAB1(G),XS(c)
  • Tries
    • Try
      • R(D);CHECK,XS(c)
      • Refutation
        • S(a);XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • K(d);N_GUARD,S_CUTS(c),S_FLIGHT::QAR1(G)
        • S(c);XR(D)::QAB1(G)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Refutation
        • K(d);P_SPINS(c),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);P_SPINS(c),S_FLIGHT::QAB(G)
      • Refutation
        • P(g);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • K(d);N_GUARD,P_SPINS(c),S_FLIGHT::QAB(G)
      • K(d);N_GUARD,P-FLIGHT,P_SPINS(c)::QAR1(G)
      • S(c);N_GUARD,XS(C)::QAR2(G)
      • S(c);SBLOCK::S(H)
      • P(f);::QAR1(G),XP(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).