MESON Chess Problem Database

Problem Display
PID: 115739 (6b1/5n1p/5K1k/6p1/6Pq/5P2/8/5R1R w - - 0 1)

Ernst, Georg

Deutsches Wochenschach, 1911

6b1/5n1p/5K1k/6p1/6Pq/5P2/8/5R1R

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh1
      • 2.Rxh1#
    • 1...Qh2
      • 2.Rxh2#
    • 1...Qh3
      • 2.Rxh3#
    • 1...Qh5
      • 2.Rxh5#
  • Keys
    • 1.f4!
      • 1...gxf4+
        • 2.Rxh4#
      • 1...Qxh1
        • 2.Rxh1#
      • 1...Se5
        • 2.fxg5#
      • 1...Qh2
        • 2.Rxh2#
      • 1...Qh3
        • 2.Rxh3#
      • 1...Qh5
        • 2.Rxh5#
      • 1...Sd6
        • 2.fxg5#
      • 1...Sd8
        • 2.fxg5#
      • 1...Sh8
        • 2.fxg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_SPINQ(a),OGATE,XR(B)::R(A),XQ(a)
    • Q(a);OGATEB::R(B),XQ(a)
    • Q(a);OGATE::R1(B),XQ(a)
  • Actual
    • P(C);
    • Vars
      • P(b);CHECK,N_GUARD,XP(C)::R(B),XQ(a)
      • Q(a);N_SPINQ(a),OGATE,XR(B)::R(A),XQ(a)
      • S(d);N_GUARD::P(C),XP(b)
      • Q(a);OGATEB::R(B),XQ(a)
      • Q(a);OGATE::R1(B),XQ(a)
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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).