MESON Chess Problem Database

Problem Display
PID: 54557 (K2B2B1/5P2/1p2N3/p2k1PP1/3p1P2/1PQ3p1/2NRn3/3rR1r1 w - - 0 1)

Kopaev, Viacheslav Georgievich

3rd HM., Szachista, 1994

K2B2B1/5P2/1p2N3/p2k1PP1/3p1P2/1PQ3p1/2NRn3/3rR1r1

#2

13 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Se3+?
      • 1...Kd6
        • 2.Qc7#
      • 1...Ke4!
    • 1.Sb4+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kd6
        • 2.Qc6#
        • 2.Qc7#
      • 1...axb4!
    • 1.Qxd4+?
      • 1...Kc6
        • 2.Qxb6#
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qd7#
      • 1...Sxd4!
    • 1.f8Q?
      • threat
        • 2.Qf3#
      • 1...Ke4
        • 2.Qc6#
      • 1...Sxc3
        • 2.Sexd4#
      • 1...d3
        • 2.Qc4#
      • 1...Rf1!
  • Keys
    • 1.Sexd4!
      • threat
        • 2.Qc6#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kd6
        • 2.Sb5#
        • 2.Qc6#
      • 1...Sxc3
        • 2.f8Q#
        • 2.f8B#
      • 1...Sxd4
        • 2.f8Q#
        • 2.f8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(g);P-FLIGHT::QAB1(E)
      • Refutation
        • K(g);N_SPINP(e),S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(g);N_SPINP(e),P_SPINS(c),S_FLIGHT::QAB1(E)
      • Refutation
        • P(f);XS(B)
    • Try
      • Q(E);CHECK,XP(e)
      • Refutation
        • S(c);P_SPINS(c),XQ(E)
    • Try
      • P(J);
      • Threat
        • QAB(E)
      • Vars
        • K(g);N_SPINP(e),P_SPINS(c),S_FLIGHT::QAB(E)
        • S(c);XQ(E)::B(M)+S(I),XP(e)
        • P(e);::QAB1(E)
      • Refutation
        • R(b);
  • Actual
    • S(I);XP(e)
    • Threat
      • QAB1(E)
    • Vars
      • K(g);P_SPINS(c),S_FLIGHT::QAB1(E)
      • S(c);XQ(E)::P=Q
      • S(c);P_SPINS(c),XS(I)::P=Q
HTML5 logo

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).