MESON Chess Problem Database

Problem Display
PID: 108025 (1Q4K1/2Bp1B2/1R4p1/2p2k2/2N2P2/1q2nP2/1b6/3r2r1 w - - 0 1)

Efendijev, A

Republika, 1992

1Q4K1/2Bp1B2/1R4p1/2p2k2/2N2P2/1q2nP2/1b6/3r2r1

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Sxe3#
    • 1...Qc2
      • 2.Sxe3#
    • 1...Qa4
      • 2.Sxe3#
    • 1...Qb4
      • 2.Sxe3#
    • 1...Qb5
      • 2.Sxe3#
    • 1...Re1
      • 2.Bxg6#
    • 1...Rf1
      • 2.Bxg6#
    • 1...Rh1
      • 2.Bxg6#
    • 1...Bc3
      • 2.Sxe3#
    • 1...Sg2
      • 2.Bxg6#
    • 1...Sg4
      • 2.Bxg6#
    • 1...g5
      • 2.Bg6#
    • 1...d5
      • 2.Qc8#
  • Tries
    • 1.Be6+?
      • 1...Kf6
        • 2.Bd8#
        • 2.Qd8#
        • 2.Qf8#
      • 1...dxe6!
  • Keys
    • 1.Be5!
      • threat
        • 2.Rf6#
      • 1...Qxb6
        • 2.Sxe3#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Sg4
        • 2.Bxg6#
      • 1...Sd5
        • 2.Sd6#
      • 1...d6
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 12
  • Sets
    • Q(d);N_GUARD::S(B),XS(e)
    • R(b);N_GUARD::B(F),XP(h)
    • B(c);S_CUTQ(d)::S(B),XS(e)
    • S(e);S_CUTR(b)::B(F),XP(h)
    • P(h);S_CUTR(b)::B(F)
    • P(i);OGATEB::QAB(G)
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • P(i);XB(F)
  • Actual
    • B(E);
    • Threat
      • R1(D)
    • Vars
      • Q(d);N_GUARD,XR(D)::S(B),XS(e)
      • B(c);OGATE,XB(E)::QAR1(G),XB(c)
      • R(a);N_GUARD::S(B),XR(a)
      • S(e);S_CUTR(b)::B(F),XP(h)
      • S(e);S_CUTR(a)::S(B)
      • P(i);OGATEB::QAB(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).