MESON Chess Problem Database

Problem Display
PID: 102361 (1Nnnr2q/pb1B1pb1/p6r/B1k4p/p7/3Q4/3Np3/1R2K3 w - - 0 1)

Aleksandrov, Vladimir Aleksandrovich

Echec+, 1992

1Nnnr2q/pb1B1pb1/p6r/B1k4p/p7/3Q4/3Np3/1R2K3

#2

7 + 14

6490 yacpdb 2009
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qc4#
    • 1...Rf6
      • 2.Rc1#
    • 1...Re5
      • 2.Rc1#
    • 1...Bc6
      • 2.Sxa6#
    • 1...Sb6
      • 2.Bb4#
    • 1...a3
      • 2.Sb3#
    • 1...f6
      • 2.Rc1#
  • Tries
    • 1.Sxa6+?
      • 1...Rxa6
        • 2.Rb5#
      • 1...Bxa6!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Qd5#
      • 1...Rxc6
        • 2.Sd7#
      • 1...Bxc6
        • 2.Sxa6#
      • 1...Sxc6
        • 2.Sd7#
      • 1...Bd4
        • 2.Qa3#
      • 1...Rd6
        • 2.Qc4#
      • 1...Re5
        • 2.Rc1#
      • 1...Sb6
        • 2.Bb4#
      • 1...Se7
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(f);SBLOCK::QAR1(D)
    • R(f);S_CUTB(j)::R(A)
    • R(m);S_CUTB(j)::R(A)
    • B(h);N_GUARD,S_CUTR(f)::S(G),XP(e)
    • S(k);SBLOCK::B(E)
    • P(b);N_GUARD::S(C)
    • P(i);S_CUTB(j)::R(A)
  • Tries
    • Try
      • S(G);CHECK,XP(e)
      • Vars
        • R(f);XS(G)::R1(A)
      • Refutation
        • B(h);XS(G)
  • Actual
    • B(F);
    • Threat
      • QAR1(D)
    • Vars
      • R(f);SBLOCK,XB(F)::S(G)
      • B(h);N_GUARD,SBLOCK,XB(F)::S(G),XP(e)
      • S(l);SBLOCK,XB(F)::S(G)
      • B(j);SBLOCK::QAB(D)
      • R(f);SBLOCK::QAR1(D)
      • R(m);S_CUTB(j)::R(A)
      • S(k);SBLOCK::B(E)
      • S(k);S_CUTR(m)::S(C)
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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).