MESON Chess Problem Database

Problem Display
PID: 165367 (2n1k2r/p1Kppp1p/1p1R1R2/3N4/8/8/8/3BQ3 w - - 0 1)

Ben-Zvi, Yoav

The Problemist Supplement, 2017

2n1k2r/p1Kppp1p/1p1R1R2/3N4/8/8/8/3BQ3

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd6
      • 2.Qxe7#
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qxf7#
      • 1...Kf8
        • 2.Qxf7#
      • 1...Sxd6
        • 2.Qxe7#
      • 1...dxe6
        • 2.Rd8#
      • 1...fxe6
        • 2.Bh5#
      • 1...Rf8
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD,XR(D)::QAR1(B),XP(d)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(e)
    • Vars
      • K(h);N_SPINP(d),P-FLIGHT,P_SPINP(e)::QAR1(B),XP(e)
      • S(g);N_GUARD,XR(D)::QAR1(B),XP(d)
      • P(c);N_SPINP(d),OGATE,XQ(B)::R1(D)
      • P(e);N_SPINP(d),OGATEB,XQ(B)::B(A)
      • R(i);SBLOCK::QAB1(B),XP(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).