MESON Chess Problem Database

Problem Display
PID: 101111 (1K6/2N5/2R2bQ1/N3p1n1/1p1k4/1r2r3/1nPpPP2/8 w - - 0 1)

Millins, Edward

Good Companions, 1920

1K6/2N5/2R2bQ1/N3p1n1/1p1k4/1r2r3/1nPpPP2/8

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Sxb3#
    • 1...Re4
      • 2.Sxb3#
    • 1...Sd1
      • 2.Rc4#
    • 1...Sd3
      • 2.Sxb3#
      • 2.Rc4#
    • 1...Sa4
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...e4
      • 2.Qxf6#
  • Tries
    • 1.Rd6+?
      • 1...Kc3
        • 2.Sb5#
      • 1...Kc5!
  • Keys
    • 1.c4!
      • threat
        • 2.Sb5#
      • 1...bxc4 ep+
        • 2.Sxb3#
      • 1...Kc3
        • 2.Sb5#
      • 1...Sxc4
        • 2.Rxc4#
      • 1...e4
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD,XP(B)::S(D),XR(c)
    • R(d);N_GUARD::S(D),XR(c)
    • S(a);N_GUARD::R1(E)
    • S(a);N_GUARD::R1(E),XS(a)
    • P(g);OGATEB,SBLOCK::QAB(F),XB(i)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(f);S_FLIGHT::S(G)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • P(A);
    • Threat
      • S(G)
    • Vars
      • P(e);CHECK,EP,S_CUTR(d),XP(A)::S(D),XR(c)
      • K(f);S_FLIGHT::S(G)
      • S(a);OGATE,XP(A)::R1(E),XS(a)
      • P(g);OGATEB,SBLOCK::QAB(F),XB(i)
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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).