MESON Chess Problem Database

Problem Display
PID: 81428 (8/3pr1bB/6Pp/3P1k1N/2np3P/1N1n1P2/5Q1B/Kb6 w - - 0 1)

Casa, Alex

British Chess Magazine, 1952

8/3pr1bB/6Pp/3P1k1N/2np3P/1N1n1P2/5Q1B/Kb6

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sxd4#
    • 1...Rf7
      • 2.gxf7#
    • 1...Be5
      • 2.g7#
    • 1...Bf6
      • 2.g7#
    • 1...Bf8
      • 2.Sxd4#
      • 2.g7#
    • 1...Bh8
      • 2.g7#
    • 1...Sde5
      • 2.Sxd4#
    • 1...Sce5
      • 2.Sxd4#
  • Keys
    • 1.Qxd4!
      • threat
        • 2.Sg3#
      • 1...Bxd4+
        • 2.Sxd4#
      • 1...Re4
        • 2.Sxg7#
      • 1...Re5
        • 2.Qg4#
      • 1...Be5
        • 2.g7#
      • 1...Sde5
        • 2.Qf4#
      • 1...Sce5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(h);S_CUTB(i)::S(D),XP(d)
    • R(h);OGATE::B(J)+P(I),XR(h)
    • B(i);OGATE::B(J)+P(I)
    • S(b);S_CUTB(i)::S(D),XP(d)
    • S(c);S_CUTB(i)::S(D),XP(d)
  • Actual
    • Q(B);P_SPINQ(B),XP(d)
    • Threat
      • S(H)
    • Vars
      • B(i);CHECK,XQ(B)::S(D),XB(i)
      • R(h);N_GUARD::S(H),XB(i)
      • R(h);N_PINQ(B)::QAB1(B)
      • B(i);OGATE::B(J)+P(I)
      • S(b);N_PINQ(B)::QAR1(B)
      • S(c);N_PINQ(B)::QAB1(B)
HTML5 logo

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).