MESON Chess Problem Database

Problem Display
PID: 146824 (1r6/B1R1Rp1p/qr1Q3K/3bP3/1npk4/2N5/3PP3/8 w - - 0 1)

Levman, Semyon Semyonovich

4th Prize, L'Italia Scacchistica, 1926

1r6/B1R1Rp1p/qr1Q3K/3bP3/1npk4/2N5/3PP3/8

#2

9 + 9

14868 Pirnie Collection 2013
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.e3#
    • 1...Sc6
      • 2.Qxd5#
    • 1...f6
      • 2.Qc5#
  • Tries
    • 1.Rxf7?
      • threat
        • 2.Rf4#
      • 1...Sd3
        • 2.e3#
      • 1...Rf8!
  • Keys
    • 1.Qf6!
      • threat
        • 2.e6#
      • 1...Bc6
        • 2.Qf2#
      • 1...Sc6
        • 2.Qf2#
      • 1...Be6
        • 2.Qf4#
      • 1...Sd3
        • 2.e3#

Anticipated by 6010(1926)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK::P(B)
    • S(a);N_PINQ(E)::QAR1(E),XB(d)
    • P(g);N_PINQ(E)::QAB1(E)
  • Tries
    • Try
      • R(I);XP(g)
      • Threat
        • R(I)
      • Vars
        • S(a);SBLOCK::P(B)
      • Refutation
        • R(i);
  • Actual
    • Q(E);N_PINB(d)
    • Threat
      • QAB(E)+P(D)
    • Vars
      • B(d);N_PINQ(E)::QAB(E)
      • S(a);N_PINQ(E)::QAB(E)
      • B(d);N_PINQ(E)::QAR2(E)
      • S(a);SBLOCK::P(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).