MESON Chess Problem Database

Problem Display
PID: 152415 (1N1n4/2p2b2/3k1P2/4rP2/8/N1p1BQ2/2p3R1/2K4B w - - 0 1)

Ernst, Georg

Good Companions (November), 1915

1N1n4/2p2b2/3k1P2/4rP2/8/N1p1BQ2/2p3R1/2K4B

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sc4#
    • 1...Re6
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
    • 1...Bd5
      • 2.Sb5#
    • 1...Bh5
      • 2.Sc4#
    • 1...Bg6
      • 2.Sc4#
    • 1...Be8
      • 2.Sc4#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Se6
      • 2.Sc4#
      • 2.Qc6#
    • 1...Sb7
      • 2.Qc6#
    • 1...c5
      • 2.Sb5#
  • Tries
    • 1.Rd2+?
      • 1...Rd5
        • 2.Sc4#
        • 2.Qg3#
        • 2.Qf4#
      • 1...Bd5
        • 2.Sc4#
        • 2.Sb5#
      • 1...cxd2+!
  • Keys
    • 1.Qd5+!
      • 1...Kxd5
        • 2.Rd2#
      • 1...Rxd5
        • 2.Sc4#
      • 1...Bxd5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(c);S_CUTB(f)::S(D)
    • B(f);N_GUARD::S(D),XB(f)
    • B(f);S_CUTR(c)::S(D)
    • B(f);N_GUARD::S(D)
    • S(g);N_GUARD::QAR1(F),XS(g)
    • S(g);N_GUARD::QAR1(F)
    • P(e);S_CUTR(c)::S(D)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • P(b);CHECK,XR(C)
  • Actual
    • Q(F);CHECK
    • Vars
      • K(d);P-FLIGHT,XQ(F)::B(B)+R(C),DCHECK
      • R(c);SBLOCK,XQ(F)::S(D)
      • B(f);SBLOCK,XQ(F)::S(D)
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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).