Problem Display
PID: 266829 (2b4Q/8/1K1P4/2PrPP2/2pkB3/3p4/6P1/1N2R3 w - - 0 1)

Andersson, Harry

Schackvarlden, 1931

2b4Q/8/1K1P4/2PrPP2/2pkB3/3p4/6P1/1N2R3

#2

10 + 5


15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION


  • SOUND
  • Sets
    • 1...Rxd6+
      • 2.exd6#
  • Keys
    • 1.Qh4!
      • threat
        • 2.Bf3#
      • 1...Rxd6+
        • 2.Bc6#
      • 1...Kxe5
        • 2.Bxd3#
      • 1...Rxe5
        • 2.Qf2#
      • 1...Bxf5
        • 2.Bxf5#
      • 1...d2
        • 2.Bc2#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(d);CHECK,OGATE,XP(I)::QAB(J)+P(F),XR(d)
  • Actual
    • Q(J);
    • Threat
      • QAR(J)+B(D)
    • Vars
      • R(d);CHECK,OGATE,XP(I)::QAR(J)+B(D)
      • K(c);N_GUARD,S_FLIGHT,XP(F)::R(B)+B(D),XP(a)
      • R(d);SBLOCK,XP(F)::QAB(J)
      • B(e);OGATE,XP(G)::QAR(J)+B(D),XB(e)
      • P(a);OGATE::QAR(J)+B(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).