MESON Chess Problem Database

Problem Display
PID: 196999 (r7/1k1P4/1P1B4/1PPR4/7K/7B/8/2Q5 w - - 0 1)

Hannemann, Knud Harald

Skakbladet, 1919

r7/1k1P4/1P1B4/1PPR4/7K/7B/8/2Q5

#2

9 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.dxc8Q#
  • Tries
    • 1.Bg2?
      • threat
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rd4#
        • 2.Re5#
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
      • 1...Ra4+
        • 2.Rd4#
      • 1...Rh8+
        • 2.Rh5#
      • 1...Ra2
        • 2.Rd2#
      • 1...Ra3
        • 2.Rd3#
      • 1...Re8
        • 2.Re5#
      • 1...Rf8
        • 2.Rf5#
      • 1...Rg8
        • 2.Rg5#
      • 1...Rc8!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rd4#
        • 2.Re5#
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
      • 1...Ra4+
        • 2.Rd4#
      • 1...Rh8+
        • 2.Rh5#
      • 1...Ra1
        • 2.Rd1#
      • 1...Ra2
        • 2.Rd2#
      • 1...Ra3
        • 2.Rd3#
      • 1...Rc8
        • 2.dxc8Q#
      • 1...Re8
        • 2.Re5#
      • 1...Rf8
        • 2.Rf5#
      • 1...Rg8
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE::PXR(b)=Q
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(8)
      • Vars
        • R(b);CHECK::B(B)+R(F)
        • R(b);::B(B)+R(F)
      • Refutation
        • R(b);
  • Actual
    • Q(A);
    • Threat
      • DUALS(8)
    • Vars
      • R(b);CHECK::QAB(A)+R(F)
      • R(b);::QAB(A)+R(F)
      • R(b);OGATE::PXR(b)=Q
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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).