Problem Display
PID: 115 (3R4/8/6B1/4p3/r5Nq/pN4Pp/K1PB3R/3kr3 w - - 0 1)

Mansfield, Comins

2nd Prize, Swiat Szachowy, 1930

3R4/8/6B1/4p3/r5Nq/pN4Pp/K1PB3R/3kr3

#2

9 + 7


35 L'Italia Scacchistica 1930
3202 Complete Mansfield/I 1996
133 The Problemist Supplement 2014

SOLUTION


  • SOUND
  • Sets
    • 1...Qh5
      • 2.Bb4#
    • 1...Rf1
      • 2.Se3#
    • 1...Rg1
      • 2.Se3#
    • 1...Rh1
      • 2.Se3#
    • 1...Re3
      • 2.Sxe3#
  • Keys
    • 1.Bh5!
      • threat
        • 2.Se3#
      • 1...Kxc2
        • 2.Bxe1#
      • 1...Qxg4
        • 2.Bb4#
      • 1...Qxh5
        • 2.Bb4#
      • 1...Rxg4
        • 2.Bg5#
      • 1...Re3
        • 2.Sxe3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(f);N_GUARD::R(I)+B(C)
    • R(b);N_GUARD::S(G)
    • R(b);N_GUARD::S(G),XR(b)
  • Actual
    • B(H);
    • Threat
      • B(H)+S(G),DCHECK
    • Vars
      • K(a);S_FLIGHT,XP(B)::R(D)+B(C),XR(b)
      • Q(f);N_GUARD,P_SPINQ(f),XS(G)::R(I)+B(C)
      • Q(f);N_GUARD,XB(H)::R(I)+B(C)
      • R(e);N_GUARD,P_SPINR(e),XS(G)::R(I)+B(C)
      • R(b);::B(H)+S(G),DCHECK,XR(b)


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).