MESON Chess Problem Database

Problem Display
PID: 61479 (6K1/6Qp/8/1P5P/2ppkn1R/4N3/2PP1Rrb/6rB w - - 0 1)

ten Cate, Pieter

Schach, 1951

6K1/6Qp/8/1P5P/2ppkn1R/4N3/2PP1Rrb/6rB

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bxg2#
    • 1...Rb1
      • 2.Bxg2#
    • 1...Rc1
      • 2.Bxg2#
    • 1...Rd1
      • 2.Bxg2#
    • 1...Re1
      • 2.Bxg2#
    • 1...Rf1
      • 2.Bxg2#
    • 1...Bg3
      • 2.Qe7#
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Sxh5
        • 2.Qb7#
      • 1...Se2
        • 2.Qb7#
      • 1...Sd3
        • 2.Qb7#
      • 1...Sh3
        • 2.Qb7#
      • 1...Sd5
        • 2.Qxh7#
      • 1...Se6
        • 2.Qb7#
      • 1...Sg6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::B(A),XR(b)
    • B(c);N_PINQ(I)::QAR(I)
  • Actual
    • S(E);N_PINS(g),N_SPINQ(I)
    • Threat
      • QAR1(I)
    • Vars
      • K(f);S_FLIGHT::QAR1(I)
      • K(f);N_SPINR(b),P_SPINS(g),S_FLIGHT::QAR1(I)
      • S(g);N_GUARD,XP(H)::QAB(I)
      • S(g);N_GUARD::QAB(I)
      • S(g);N_GUARD,SBLOCK::QAB(I),XP(h)
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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).