MESON Chess Problem Database

Problem Display
PID: 194146 (8/1B6/3P2N1/1Q4pp/Pp4kr/q1r5/1p4Pn/nb2BNK1 w - - 0 1)

Lindquist, Carl Emil Richard

Dagens Nyheder, 1917

8/1B6/3P2N1/1Q4pp/Pp4kr/q1r5/1p4Pn/nb2BNK1

#2

9 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Qd7#
    • 1...Rd3
      • 2.Bc8#
      • 2.Qd7#
    • 1...Bd3
      • 2.Se3#
    • 1...Sc2
      • 2.Qd7#
  • Tries
    • 1.Bc8+?
      • 1...Bf5
        • 2.Bxf5#
        • 2.Qxf5#
      • 1...Rxc8!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Se3#
      • 1...Sf3+
        • 2.Bxf3#
      • 1...Rxd3
        • 2.Bc8#
      • 1...Sxf1
        • 2.Bf3#
      • 1...Rh3
        • 2.gxh3#
      • 1...Sc2
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(f);S_CUTB(b)::QAB(F)
    • B(b);S_CUTR(f)::S(B)
    • S(a);S_CUTB(b)::QAB(F)
  • Tries
    • Try
      • B(I);CHECK
      • Refutation
        • R(f);XB(I)
  • Actual
    • Q(F);
    • Threat
      • S(B)
    • Vars
      • S(d);CHECK,N_GUARD::B(I),XS(d)
      • R(f);N_GUARD,XQ(F)::B(I)
      • S(d);N_GUARD,XS(B)::B(I)
      • R(i);OGATE::P(D),XR(i)
      • S(a);S_CUTB(b)::QAR2(F)
HTML5 logo

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).