Problem Display
PID: 152928 (1nQn4/1Nb1p3/1P1p2pp/R5pq/1k4p1/p2K1PP1/1r1P4/1RN1B3 w - - 0 1)

Dawson, Thomas Rayner

Blighty, 1942

(First published on Sat Apr 25 1942)

1nQn4/1Nb1p3/1P1p2pp/R5pq/1k4p1/p2K1PP1/1r1P4/1RN1B3

#2

11 + 13


15256 TRD Scrapbook 2014

SOLUTION


  • SOUND
  • Sets
    • 1...Qh1
      • 2.Qxg4#
    • 1...Qh2
      • 2.Qxg4#
    • 1...Rb3+
      • 2.Rxb3#
    • 1...Bxb6
      • 2.Qc3#
      • 2.Qc4#
    • 1...a2
      • 2.Rxb2#
  • Keys
    • 1.Ke3!
      • threat
        • 2.d3#
      • 1...Bxb6+
        • 2.d4#
      • 1...Kc4
        • 2.d3#
      • 1...Qh1
        • 2.Qxg4#
      • 1...Qh2
        • 2.Qxg4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(f);N_GUARD::QAR(K),XP(d)
    • R(a);CHECK,OGATE::R1(A),XR(a)
    • P(b);N_GUARD::R(A),XR(a)
  • Actual
    • K(E);P-FLIGHT
    • Threat
      • B(C)+P(D)
    • Vars
      • B(j);CHECK,XP(I)::B(C)+P(D)
      • K(c);N_SPINR(a),P-FLIGHT,P_SPINB(j)::P(D)
      • Q(f);N_GUARD::QAR(K),XP(d)


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).