MESON Chess Problem Database

Problem Display
PID: 213165 (2N1b1B1/1n3p2/3Pkp2/1Q2p2R/1K6/8/8/8 w - - 0 1)

Marysko, Milos

Land og Folk, 1970

2N1b1B1/1n3p2/3Pkp2/1Q2p2R/1K6/8/8/8

#2

6 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd7
      • 2.Qc4#
    • 1...e4
      • 2.Qxe8#
      • 2.Qf5#
    • 1...f5
      • 2.Rh6#
  • Tries
    • 1.Qxb7?
      • 1...Bc6
        • 2.Bxf7#
        • 2.Qxf7#
      • 1...f5
        • 2.Rh6#
      • 1...Ba4
        • 2.Bxf7#
        • 2.Qxf7#
      • 1...Bb5
        • 2.Bxf7#
        • 2.Qxf7#
      • 1...e4
        • 2.Qe7#
      • 1...Bd7!
  • Keys
    • 1.d7!
      • threat
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Bxd7
        • 2.Qc4#
      • 1...Sc5
        • 2.Qc6#
      • 1...f5
        • 2.Rh6#
      • 1...Sa5
        • 2.dxe8Q#
        • 2.dxe8R#
        • 2.d8S#
      • 1...Sd6
        • 2.d8S#
      • 1...Sd8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...e4
        • 2.Qd5#
        • 2.Qf5#
        • 2.dxe8Q#
        • 2.dxe8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK::QAB(B)
    • P(c);OGATEB,SBLOCK::R(C)
  • Tries
    • Try
      • Q(B);XS(d)
      • Vars
        • P(c);OGATEB,SBLOCK::R(C)
        • P(a);::QAR1(B)
      • Refutation
        • B(f);
  • Actual
    • P(D);
    • Threat
      • PXB(f)=Q
    • Vars
      • B(f);SBLOCK,XP(D)::QAB(B)
      • S(d);N_GUARD::QAR2(B)
      • P(c);OGATEB,SBLOCK::R(C)
      • S(d);N_GUARD::P=S
      • S(d);::PXB(f)=Q
HTML5 logo

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).