MESON Chess Problem Database

Problem Display
PID: 64792 (4Q1Nr/4N3/p2rp3/6pR/4B1k1/8/Kb5P/5R2 w - - 0 1)

Burger, Robert Eugene

Comm., The Problemist Supplement, 2006

4Q1Nr/4N3/p2rp3/6pR/4B1k1/8/Kb5P/5R2

#2

8 + 7

56 The Problemist 2007
145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sf6#
    • 1...Rh6
      • 2.Sxh6#
    • 1...Bc1
      • 2.Sf6#
    • 1...Ba3
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...e5
      • 2.Bf5#
  • Tries
    • 1.Rf4+?
      • 1...gxf4
        • 2.Qg6#
      • 1...Kxf4!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Bf3#
      • 1...Kxh5
        • 2.Bg6#
      • 1...Rxh5
        • 2.Bf5#
      • 1...Rd4
        • 2.Sf6#
      • 1...Bd4
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(e);S_CUTB(a)::S(H)
    • R(g);N_GUARD::S(H),XR(g)
    • B(a);N_GUARD::S(H)
    • B(a);N_GUARD::S(H),XB(a)
    • P(f);N_GUARD::B(D)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • P(c);SBLOCK,XR(A)::QAR2(G)
      • Refutation
        • K(b);P-FLIGHT,XR(A)
  • Actual
    • Q(G);
    • Threat
      • QAR(G)+B(D),DCHECK
    • Vars
      • K(b);S_FLIGHT,XR(E)::B(D)
      • R(g);SBLOCK,XR(E)::QAR(G)+B(D),DCHECK
      • R(e);S_CUTB(a)::S(H)
      • B(a);S_CUTR(e)::QAB(G)
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).