MESON Chess Problem Database

Problem Display
PID: 136300 (K3R1b1/p1p3p1/r1PN2B1/p1PkP3/Q2PN2r/4ppP1/2P5/b1n5 w - - 0 1)

Brabec, Juraj

4th HM., Szachy, 1975

K3R1b1/p1p3p1/r1PN2B1/p1PkP3/Q2PN2r/4ppP1/2P5/b1n5

#2

12 + 12

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4
      • 2.Bxe4#
    • 1...Rxc6
      • 2.Qc4#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bxd4
      • 2.c4#
    • 1...Bf7
      • 2.Bxf7#
    • 1...Bh7
      • 2.Bf7#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Sxe3#
      • 1...Kxe4
        • 2.Se7#
      • 1...Rxe4
        • 2.c4#
      • 1...e2
        • 2.Se3#
      • 1...Bxd4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sxc7#
      • 1...Kxc6
        • 2.Sbc3#
      • 1...Rxc6
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(e);OGATE,XS(E)::B(J),XR(e)
    • R(h);SBLOCK,XP(H)::QAB1(C)
    • B(a);N_GUARD::S(E),XB(a)
    • B(a);SBLOCK,XP(D)::P(A)
    • B(l);N_GUARD::B(J),XB(l)
    • B(l);N_GUARD::B(J)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I),XP(c)
      • Vars
        • K(g);S_FLIGHT,XS(E)::B(J)+S(I)
        • R(e);SBLOCK,XS(E)::P(A)
        • P(c);::S(I)
      • Refutation
        • B(a);XP(D)
  • Actual
    • S(I);
    • Threat
      • S(I),XP(j)
    • Vars
      • K(g);S_FLIGHT,XP(H)::QAB(C)+S(I)
      • R(h);SBLOCK,XP(H)::P(A)
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).