MESON Chess Problem Database

Problem Display
PID: 22146 (1r2b3/1Q6/B7/bp1p4/1nk5/BNN5/P2K4/8 w - - 0 1)

Goldschmeding, Cornelis

3rd HM., Nieuw Nederland, 1948

1r2b3/1Q6/B7/bp1p4/1nk5/BNN5/P2K4/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bh5
      • 2.Bxb5#
    • 1...Bg6
      • 2.Bxb5#
    • 1...Bf7
      • 2.Bxb5#
    • 1...Sxa2
      • 2.Qxd5#
    • 1...Sc2
      • 2.Qxd5#
    • 1...Sd3
      • 2.Qxd5#
    • 1...Sxa6
      • 2.Qxd5#
    • 1...Sc6
      • 2.Bxb5#
  • Keys
    • 1.Sxb5!
      • threat
        • 2.Sd6#
      • 1...Sxa2+
        • 2.Sxa5#
      • 1...Sc2+
        • 2.Sxa5#
      • 1...Sd3+
        • 2.Sxa5#
      • 1...Sxa6+
        • 2.Sxa5#
      • 1...Sc6+
        • 2.Sc3#
      • 1...Bxb5
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(g);N_GUARD::B(F),XP(d)
    • S(a);N_GUARD,P_PINS(E),XP(A)::QAB1(G),XP(e)
    • S(a);N_GUARD,P_PINS(E)::QAB1(G),XP(e)
    • S(a);N_GUARD,N_SPINP(d),P_PINS(E),XB(F)::QAB1(G),XP(e)
    • S(a);P_PINS(E),S_CUTB(g)::B(F),XP(d)
  • Actual
    • S(E);XP(d)
    • Threat
      • B(F)+S(E),DCHECK
    • Vars
      • S(a);CHECK,XP(A)::S(D),XB(c)
      • S(a);CHECK::S(D),XB(c)
      • S(a);CHECK,XB(F)::S(D),XB(c)
      • S(a);CHECK,N_GUARD,S_CUTB(g)::B(F)+S(E)
      • B(g);OGATE,P_SPINB(g),XS(E)::B(F),XB(g)
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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).