MESON Chess Problem Database

Problem Display
PID: 107793 (1B3N2/2rp3R/n4p2/r1p3kN/p3B3/R1p4K/P2pp1P1/bQ6 w - - 0 1)

Brabec, Juraj

Sachove umeni (Ceskoslovensky sach), 1970

1B3N2/2rp3R/n4p2/r1p3kN/p3B3/R1p4K/P2pp1P1/bQ6

#2

10 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Bf4#
    • 1...Ra7
      • 2.Bf4#
    • 1...Rb7
      • 2.Bf4#
    • 1...Rc8
      • 2.Bf4#
    • 1...d1B
      • 2.Qc1#
    • 1...c2
      • 2.Rg3#
    • 1...d5
      • 2.Se6#
    • 1...d6
      • 2.Se6#
  • Tries
    • 1.Bg6?
      • threat
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...c2
        • 2.Rg3#
      • 1...c4!
    • 1.Bxc7?
      • threat
        • 2.Bf4#
      • 1...d6
        • 2.Se6#
      • 1...Sxc7!
    • 1.Qd3?
      • threat
        • 2.Qe3#
        • 2.Qg3#
      • 1...d1S
        • 2.Qg3#
      • 1...e1B
        • 2.Qe3#
      • 1...e1R
        • 2.Qg3#
      • 1...f5
        • 2.Qg3#
      • 1...e1Q!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qxf6#
      • 1...Rc6
        • 2.Bf4#
      • 1...c2
        • 2.Rg3#
      • 1...f5
        • 2.Qf6#
        • 2.Qg6#
        • 2.Qh6#
      • 1...d6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(k);OGATE::B(I)
    • P(b);OGATEB::QAB(A)
    • P(d);OGATE::R(D)
    • P(l);N_GUARD::S(J)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAR1(A)
      • Vars
        • P(j);::QAR1(A),XP(j)
        • P(d);OGATE::R(D)
      • Refutation
        • P(g);
    • Try
      • B(I);XR(k)
      • Threat
        • B(I)
      • Vars
        • P(l);N_GUARD::S(J)
      • Refutation
        • S(i);XB(I)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR2(A)
        • P(c);::QAB(A)
        • P(c);::QAR2(A)
        • P(j);::QAR2(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(j)
    • Vars
      • R(k);OGATE::B(I)
      • P(d);OGATE::R(D)
      • P(l);N_GUARD::S(J)
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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).