MESON Chess Problem Database

Problem Display
PID: 170130 (n2bB2K/1b4R1/8/k1B5/p7/7Q/8/r5R1 w - - 0 1)

Maeder, Hans

Tages-Anzeiger, 1952

n2bB2K/1b4R1/8/k1B5/p7/7Q/8/r5R1

#2

6 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Ra7#
    • 1...Bg2
      • 2.Ra7#
    • 1...Bf3
      • 2.Ra7#
    • 1...Be4
      • 2.Ra7#
    • 1...Bd5
      • 2.Ra7#
    • 1...Ba6
      • 2.Qc3#
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qb5#
      • 1...Ka6
        • 2.Qb5#
      • 1...axb3
        • 2.Rxa1#
      • 1...Rb1
        • 2.Qxa4#
      • 1...Ba6
        • 2.Qc3#
        • 2.Qb4#
      • 1...Bc6
        • 2.Ra7#
      • 1...Sc7
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • B(d);OGATE::R(D)
    • B(d);SBLOCK::QAB(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(c);P-FLIGHT::QAB1(B)
      • P(b);OGATEB,XQ(B)::R(A),XR(a)
      • R(a);N_GUARD::QAR1(B),XP(b)
      • B(d);OGATE::R(D)
      • S(e);N_GUARD,S_CUTB(f)::QAB1(B)
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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).