MESON Chess Problem Database

Problem Display
PID: 87010 (5N2/2N2Qp1/B1P1p3/2PP2Pp/R2PkP1r/5p2/5P1b/1b2K3 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Sachove umeni (Ceskoslovensky sach), 1989

5N2/2N2Qp1/B1P1p3/2PP2Pp/R2PkP1r/5p2/5P1b/1b2K3

#2

13 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Qxe6#
    • 1...Bxf4
      • 2.Qg6#
    • 1...e5
      • 2.dxe5#
  • Tries
    • 1.Sfxe6?
      • threat
        • 2.Qg6#
      • 1...g6
        • 2.Qxg6#
      • 1...Rxf4!
    • 1.Sg6?
      • threat
        • 2.Qxe6#
      • 1...exd5
        • 2.Qxd5#
        • 2.Qe6#
      • 1...e5
        • 2.dxe5#
      • 1...Bxf4!
    • 1.Qf6?
      • threat
        • 2.Qe5#
      • 1...Bxf4
        • 2.Qg6#
      • 1...e5
        • 2.Qxe5#
        • 2.dxe5#
      • 1...gxf6!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc3#
      • 1...Kd3
        • 2.Qg6#
      • 1...Kxd5
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(e);SBLOCK,XP(E)::QAR2(L),XP(g)
    • B(b);SBLOCK,XP(E)::QAB(L)
    • P(g);OGATE::R(C)+P(D),XP(g)
  • Tries
    • Try
      • S(M);XP(g)
      • Threat
        • QAB(L)
      • Vars
        • P(h);::QAB(L),XP(h)
      • Refutation
        • R(e);XP(E)
    • Try
      • S(M);
      • Threat
        • QAR2(L),XP(g)
      • Vars
        • P(g);OGATE::R(C)+P(D),XP(g)
      • Refutation
        • B(b);XP(E)
    • Try
      • Q(L);
      • Threat
        • QAR1(L)
      • Vars
        • B(b);SBLOCK,XP(E)::QAB(L)
      • Refutation
        • P(h);XQ(L)
  • Actual
    • S(K);
    • Threat
      • S(K)
    • Vars
      • K(d);S_FLIGHT::QAB(L)
      • K(d);P_SPINP(g),S_FLIGHT,XP(G)::QAB1(L),XP(g)
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).