MESON Chess Problem Database

Problem Display
PID: 156065 (5bn1/K7/R1B5/1pk4p/2p2B1r/2P1p3/4rpQ1/6qb w - - 0 1)

Levman, Semyon Semyonovich

Nederlandse Bond van Probleemvrienden, 1932

5bn1/K7/R1B5/1pk4p/2p2B1r/2P1p3/4rpQ1/6qb

#2

6 + 12

1577 Jaarboek 1932

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Ra5#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Rc6#
      • 1...b4
        • 2.Ra5#
      • 1...Qa1
        • 2.Qg5#
      • 1...Se7
        • 2.Bd6#
      • 1...Ra2!
    • 1.Qg5+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...Qxg5!
  • Keys
    • 1.Be4!
      • threat
        • 2.Rc6#
      • 1...b4
        • 2.Ra5#
      • 1...Qa1
        • 2.Qg5#
      • 1...Ra2
        • 2.Bxe3#
      • 1...Se7
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(h);OGATEB::R(D)
  • Tries
    • Try
      • B(E);
      • Threat
        • R1(D)
      • Vars
        • P(h);OGATEB::R(D)
        • Q(a);N_GUARD,P_PINR(D)::QAR(A)
        • S(l);S_CUTB(k)::B(C)
      • Refutation
        • R(c);P_PINR(D)
    • Try
      • Q(A);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR1(A),XB(b)
      • Refutation
        • Q(a);XQ(A)
  • Actual
    • B(E);
    • Threat
      • R1(D)
    • Vars
      • P(h);OGATEB::R(D)
      • Q(a);N_GUARD,P_PINR(D)::QAR(A)
      • R(c);N_GUARD,P_PINR(D)::B(C),XP(e)
      • S(l);S_CUTB(k)::B(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).