MESON Chess Problem Database

Problem Display
PID: 206369 (1K3R2/Q2B3p/8/3pk3/p4N1P/B1p5/2pbP3/2n5 w - - 0 1)

Kofman, Rafael Moiseevich

Revista de Sah, 1925

1K3R2/Q2B3p/8/3pk3/p4N1P/B1p5/2pbP3/2n5

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
  • Tries
    • 1.Sd3+?
      • 1...Ke4
        • 2.Bf5#
        • 2.Re8#
      • 1...Sxd3!
    • 1.Sg6+?
      • 1...Ke4
        • 2.Bf5#
        • 2.Re8#
      • 1...hxg6!
    • 1.Bd6+?
      • 1...Ke4
        • 2.Bf5#
        • 2.Re8#
      • 1...Kxd6!
    • 1.Re8+?
      • 1...Kxf4
        • 2.Bd6#
        • 2.Qf2#
        • 2.Qc7#
      • 1...Kf6!
  • Keys
    • 1.Bf5!
      • 1...Kxf4
        • 2.Bd6#
      • 1...Bxf4
        • 2.Qg7#
      • 1...Sxe2
        • 2.Sd3#
      • 1...Be1
        • 2.Qe3#
      • 1...Be3
        • 2.Qxe3#
      • 1...Sa2
        • 2.Sd3#
      • 1...Sb3
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...d4
        • 2.Qc7#
      • 1...h5
        • 2.Sg6#
      • 1...h6
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::QAR2(E)
    • B(c);N_GUARD::QAR2(E),XB(c)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • S(a);XS(C)
    • Try
      • S(C);CHECK
      • Refutation
        • P(h);XS(C)
    • Try
      • B(B);CHECK
      • Refutation
        • K(g);S_FLIGHT,XB(B)
    • Try
      • R(H);CHECK
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • B(F);
    • Vars
      • K(g);S_FLIGHT,XS(C)::B(B)
      • B(c);SBLOCK,XS(C)::QAB(E)
      • S(a);N_GUARD,XP(A)::S(C)
      • B(c);N_GUARD::QAR2(E)
      • B(c);N_GUARD::QAR2(E),XB(c)
      • S(a);N_GUARD::S(C)
      • S(a);N_GUARD::S(C),XS(a)
      • P(f);SBLOCK::QAB(E)
      • P(h);N_GUARD::S(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).