MESON Chess Problem Database

Problem Display
PID: 255855 (3R2Q1/r3p3/2B5/3N4/1BkP3R/1p6/1bp2N2/2n4K w - - 0 1)

Levman, Semyon Semyonovich

British Chess Magazine, 1933

3R2Q1/r3p3/2B5/3N4/1BkP3R/1p6/1bp2N2/2n4K

#2

9 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sxb2#
        • 2.Se5#
      • 1...Kxd3
        • 2.Bb5#
      • 1...Bxd4
        • 2.Sb2#
        • 2.Se5#
      • 1...Ra2
        • 2.Se5#
      • 1...Ba1
        • 2.Se5#
      • 1...Ba3
        • 2.Se5#
      • 1...Bc3
        • 2.Se5#
      • 1...e5
        • 2.Sxb2#
        • 2.Sxe5#
      • 1...Sxd3!
    • 1.Sc3+?
      • 1...e6
        • 2.d5#
      • 1...Kxb4!
    • 1.Rb8?
      • threat
        • 2.Se3#
        • 2.Sxe7#
        • 2.Bb5#
      • 1...Ra5
        • 2.Se3#
      • 1...Rd7
        • 2.Se3#
        • 2.Bb5#
      • 1...e5
        • 2.Se3#
        • 2.Sc7#
        • 2.Se7#
        • 2.Bb5#
      • 1...e6
        • 2.Se3#
      • 1...Rb7!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Se5#
      • 1...Kd3
        • 2.Sf4#
      • 1...Kxd4
        • 2.Sc7#
      • 1...Sd3
        • 2.Sge3#
      • 1...e5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);N_GUARD,S_FLIGHT,XS(B)::B(G)
        • R(f);::S(B)
        • B(b);::S(B)
      • Refutation
        • S(a);XS(B)
    • Try
      • S(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R(E)+P(D)
      • Refutation
        • K(e);P-FLIGHT,XB(C)
    • Try
      • R(H);
      • Threat
        • DUALS(3)
      • Vars
        • R(f);::QAB(I)+S(F),DCHECK
        • P(g);::S(F)
      • Refutation
        • R(f);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(e);N_GUARD,S_CUTP(g),S_FLIGHT::S(F)
      • K(e);N_GUARD,P-FLIGHT,S_CUTP(g),XP(D)::R(H)+S(F)
      • S(a);SBLOCK::S(B)
      • P(g);::S(B),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).