MESON Chess Problem Database

Problem Display
PID: 228958 (7b/1b2p2r/6Bn/KQ3qP1/1p2kNp1/2P5/2PP1R2/4n1r1 w - - 0 1)

Levman, Semyon Semyonovich

1st Prize, Volk und Zeit, 1926

7b/1b2p2r/6Bn/KQ3qP1/1p2kNp1/2P5/2PP1R2/4n1r1

#2

9 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qe2#
      • 2.Qxd5#
    • 1...Ba6
      • 2.Qd5#
    • 1...Bc8
      • 2.Qd5#
    • 1...Be5
      • 2.Qe2#
      • 2.Qxb7#
    • 1...Sd3
      • 2.cxd3#
    • 1...Sf7
      • 2.Bxf5#
      • 2.Qxf5#
    • 1...Sg8
      • 2.Bxf5#
      • 2.Qxf5#
    • 1...e5
      • 2.Qe2#
      • 2.Qc4#
      • 2.Qxb4#
  • Keys
    • 1.Sh5!
      • threat
        • 2.Rf4#
      • 1...Bd5
        • 2.Qe2#
      • 1...Rf1
        • 2.Sg3#
      • 1...Be5
        • 2.Qxb7#
      • 1...Sg2
        • 2.Sg3#
      • 1...Sd3
        • 2.cxd3#
      • 1...Sf3
        • 2.Re2#
      • 1...e5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • B(h);N_GUARD::QAB1(G)
    • S(a);OGATE::P(A),XS(a)
  • Actual
    • S(E);
    • Threat
      • R1(C)
    • Vars
      • B(h);N_PINQ(G),SBLOCK::QAR2(G)
      • R(b);N_GUARD::S(E)
      • B(k);N_PINQ(G),SBLOCK::QAB(G),XB(h)
      • S(a);S_CUTR(b)::S(E)
      • S(a);OGATE::P(A),XS(a)
      • S(a);SBLOCK::R(C)
      • P(i);N_PINQ(G),SBLOCK::QAR2(G)
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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).