MESON Chess Problem Database

Problem Display
PID: 250129 (8/6p1/7b/3N2R1/4K2k/5P2/2pQp3/4qb2 w - - 0 1)

Kofman, Rafael Moiseevich

Revista de Sah, 1927

8/6p1/7b/3N2R1/4K2k/5P2/2pQp3/4qb2

#2

5 + 7

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qxe1+?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxg5!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Rg4#
      • 1...Kxg5
        • 2.Qd8#
      • 1...Bxg5
        • 2.Qxe1#
      • 1...Qg3
        • 2.Rh5#
      • 1...Bh3
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK,XQ(a)
      • Vars
        • K(e);P-FLIGHT::QAR1(A)
      • Refutation
        • K(e);S_FLIGHT,XR(E)
  • Actual
    • S(D);
    • Threat
      • R1(E)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(E)::QAB(A)
      • B(f);SBLOCK,XR(E)::QAB(A),XQ(a)
      • Q(a);SBLOCK::R1(E)
      • B(b);SBLOCK::S(D)
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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).