MESON Chess Problem Database

Problem Display
PID: 78463 (1B3bB1/Nbr2RpK/8/3k4/2NrR3/3p4/1p6/1Q6 w - - 0 1)

Touw Hian Bwee

Comm., The Sun-Herald, 1961

1B3bB1/Nbr2RpK/8/3k4/2NrR3/3p4/1p6/1Q6

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qh1#
    • 1...Rxc4
      • 2.Re5#
    • 1...Rc5
      • 2.Rff4#
      • 2.Rfe7#
    • 1...Bc5
      • 2.Rfe7#
    • 1...d2
      • 2.Rf5#
      • 2.Rxc7#
  • Keys
    • 1.Qxb2!
      • threat
        • 2.Qxd4#
      • 1...Kxc4
        • 2.Rxc7#
      • 1...Kxe4
        • 2.Qg2#
      • 1...Kc5
        • 2.Qb5#
      • 1...Rdxc4
        • 2.Qe5#
      • 1...Rxe4
        • 2.Rf5#
      • 1...Rcxc4
        • 2.Re5#
      • 1...Bc5
        • 2.Rfe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);OGATEB,P_SPINP(b),S_FLIGHT,XR(C)::QAB(A)
    • R(f);SBLOCK,XS(B)::R1(C)
    • B(h);SBLOCK::B(H)+R(E)
  • Actual
    • Q(A);XP(a)
    • Threat
      • QAR1(A),XR(c)
    • Vars
      • K(d);P_SPINR(c),S_FLIGHT,XS(B)::B(H)+R(E),DCHECK,XR(f)
      • K(d);OGATEB,S_FLIGHT,XR(C)::QAB(A)
      • K(d);P-FLIGHT::QAR1(A)
      • R(c);OGATE,XS(B)::QAR1(A)
      • R(c);SBLOCK,XR(C)::B(H)+R(E),DCHECK
      • R(f);SBLOCK,XS(B)::R1(C)
      • B(h);SBLOCK::B(H)+R(E)
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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).