MESON Chess Problem Database

Problem Display
PID: 145318 (4B3/1b4N1/5P1R/Q3n1k1/2p2r1R/5p2/K3P3/b3N3 w - - 0 1)

Dobrila, Arsen

Problem Observer, 1993

4B3/1b4N1/5P1R/Q3n1k1/2p2r1R/5p2/K3P3/b3N3

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qxe5#
    • 1...Re4
      • 2.Sxf3#
    • 1...Rf5
      • 2.Se6#
    • 1...Rxf6
      • 2.R6h5#
  • Tries
    • 1.Qxe5+?
      • 1...Rf5
        • 2.Se6#
        • 2.R6h5#
        • 2.Qg3#
        • 2.Qxf5#
      • 1...Bxe5!
  • Keys
    • 1.e3!
      • threat
        • 2.exf4#
      • 1...Rxh4
        • 2.Rg6#
      • 1...Rxf6
        • 2.R6h5#
      • 1...Rd4
        • 2.Qxe5#
      • 1...Re4
        • 2.Sxf3#
      • 1...Rg4
        • 2.R4h5#
      • 1...Rf5
        • 2.Se6#

This is a version of 145317

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD,S_CUTB(a)::QAR2(E),XS(e)
    • R(d);N_GUARD,S_CUTB(g)::S(A),XP(b)
    • R(d);N_SPINS(e),SBLOCK::S(H)
    • R(d);SBLOCK,XP(F)::R1(G)
  • Tries
    • Try
      • Q(E);CHECK,XS(e)
      • Refutation
        • B(a);XQ(E)
  • Actual
    • P(C);
    • Threat
      • P(C),XR(d)
    • Vars
      • R(d);SBLOCK,XR(D)::R1(G)
      • R(d);SBLOCK,XP(F)::R1(G)
      • R(d);N_GUARD,S_CUTB(a)::QAR2(E),XS(e)
      • R(d);N_GUARD,S_CUTB(g)::S(A),XP(b)
      • R(d);SBLOCK::R1(D)
      • R(d);N_SPINS(e),SBLOCK::S(H)
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).