MESON Chess Problem Database

Problem Display
PID: 42641 (b1r5/bn3Ppp/5npq/1R1BN1k1/r4R2/3N3p/8/2BQ3K w - - 0 1)

Leites, Samuil Davidovich

2nd Prize, Shakhmaty v SSSR, 1965

b1r5/bn3Ppp/5npq/1R1BN1k1/r4R2/3N3p/8/2BQ3K

#2

9 + 12

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Qg4#
    • 1...Sg4
      • 2.Qxg4#
    • 1...Sxd5
      • 2.Qg4#
    • 1...Sh5
      • 2.Sf3#
      • 2.Qg4#
    • 1...Sd7
      • 2.Qg4#
    • 1...Se8
      • 2.Qg4#
    • 1...Sg8
      • 2.Qg4#
  • Keys
    • 1.Be6!
      • threat
        • 2.Sf3#
      • 1...Sc5+
        • 2.Re4#
      • 1...Qh4
        • 2.Rf5#
      • 1...Qh5
        • 2.Rg4#
      • 1...Rc5
        • 2.Rc4#
      • 1...Bc5
        • 2.Rd4#
      • 1...Sd5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • S(d);N_GUARD::QAR1(B)
    • S(d);N_GUARD::QAR1(B),XS(d)
    • S(d);N_GUARD,XB(G)::QAR1(B)
  • Actual
    • B(G);
    • Threat
      • R(F)+S(H),DCHECK
    • Vars
      • S(h);CHECK,S_CUTB(g),S_CUTR(l)::B(A)+R(E)
      • Q(f);SBLOCK::B(A)+R(E),DCHECK
      • R(l);S_CUTB(g)::B(A)+R(E)
      • B(g);S_CUTR(l)::B(A)+R(E)
      • S(d);N_GUARD::QAR1(B)
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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).