MESON Chess Problem Database

Problem Display
PID: 206535 (8/4p3/4pp2/1P1Rn2p/1P1Nk2P/1p2P2K/1P2Q3/8 w - - 0 1)

Levman, Semyon Semyonovich

64 Shakhmatnoe obozrenie, 1925

8/4p3/4pp2/1P1Rn2p/1P1Nk2P/1p2P2K/1P2Q3/8

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qf3#
  • Keys
    • 1.Sf5!
      • 1...Kxd5
        • 2.e4#
      • 1...Kxf5
        • 2.Qd3#
      • 1...exd5
        • 2.Sg3#
      • 1...exf5
        • 2.Rd4#
      • 1...Sd3
        • 2.Qg2#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sc4
        • 2.Qg2#
      • 1...Sg4
        • 2.Qg2#
      • 1...Sc6
        • 2.Qg2#
      • 1...Sg6
        • 2.Qg2#
      • 1...Sd7
        • 2.Qg2#
      • 1...Sf7
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,SBLOCK::QAB1(B)
  • Actual
    • S(F);
    • Vars
      • K(b);OGATE,S_FLIGHT,XR(I)::P(C)
      • K(b);P_SPINS(c),S_FLIGHT,XS(F)::QAB(B)
      • P(e);SBLOCK,XR(I)::S(F)
      • P(e);SBLOCK,XS(F)::R1(I)
      • S(c);N_GUARD::QAB(B)
      • S(c);N_GUARD,SBLOCK::QAB1(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).