MESON Chess Problem Database

Problem Display
PID: 72879 (n2bbr2/K3p3/pp5Q/2k1B1R1/4R3/3BN3/n3p3/2r2q2 w - - 0 1)

Rudenko, Valentin Fedorovich

1st Prize, South African Chess Player, 1961

n2bbr2/K3p3/pp5Q/2k1B1R1/4R3/3BN3/n3p3/2r2q2

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bc6
      • 2.Bd6#
    • 1...Sb4
      • 2.Bd4#
    • 1...Sc7
      • 2.Qxb6#
  • Tries
    • 1.Bf4+?
      • 1...e5
        • 2.Rgxe5#
      • 1...Rf5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qd5#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Qf7
        • 2.Bf6#
      • 1...Bc6
        • 2.Bd6#
      • 1...Bf7
        • 2.Bf4#
      • 1...Sc3
        • 2.Qc4#
      • 1...Sb4
        • 2.Bd4#
      • 1...Sc7
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(k);SBLOCK::R(E)+B(D),DCHECK
    • S(c);SBLOCK::R(E)+B(D),DCHECK
    • S(i);N_GUARD,S_CUTB(j)::QAB1(F),XP(g)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • P(h);P_SPINP(h)::R(E),XP(h)
      • Refutation
        • R(l);P_SPINR(l)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • R(a);N_GUARD::QAR1(F),XR(a)
      • Q(b);N_GUARD::R(E)+B(D)
      • B(k);SBLOCK::R(E)+B(D),DCHECK
      • B(k);S_CUTR(l)::R(E)+B(D)
      • S(c);S_CUTR(a)::QAR1(F)
      • S(c);SBLOCK::R(E)+B(D),DCHECK
      • S(i);N_GUARD,S_CUTB(j)::QAB1(F),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).