Problem Display
PID: 147698 (B5R1/rq5p/1p4pQ/8/R2b1N2/2n1p1k1/6P1/4K3 w - - 0 1)

Arlamowski, Edward

Il Problema, 1931

(First published on Thu Oct 1 1931)

B5R1/rq5p/1p4pQ/8/R2b1N2/2n1p1k1/6P1/4K3

#2

7 + 9


14868 Pirnie Collection 2013

SOLUTION


  • SOUND
  • Sets
    • 1...Bc5
      • 2.Qh3#
    • 1...Be5
      • 2.Qh3#
    • 1...Bf6
      • 2.Qh3#
    • 1...Bg7
      • 2.Qh3#
    • 1...Bh8
      • 2.Qh3#
  • Keys
    • 1.Sxg6!
      • threat
        • 2.Qh3#
      • 1...Kxg2
        • 2.Se5#
      • 1...Kg4
        • 2.Se7#
      • 1...Qxg2
        • 2.Qh4#
      • 1...hxg6
        • 2.Rxg6#
      • 1...Qc8
        • 2.Qf4#
        • 2.Qh4#
      • 1...Qd7
        • 2.Qf4#
        • 2.Qh4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(d);::QAR1(E)
    • B(d);N_SPINP(f)::QAR1(E)
  • Actual
    • S(D);XP(f)
    • Threat
      • QAR1(E)
    • Vars
      • K(c);P-FLIGHT,P_SPINQ(h),XP(B)::R(G)+S(D)
      • K(c);P-FLIGHT,P_SPINB(d)::R(G)+S(D)
      • Q(h);XP(B)::QAB1(E)
      • P(i);OGATE,P_SPINP(i),XS(D)::R(G),XP(i)


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).