MESON Chess Problem Database

Problem Display
PID: 151969 (6Q1/prp5/B7/1rbP1K2/6N1/1P1k1N1R/2b1pp2/4B3 w - - 0 1)

Promislo, Charles

2nd HM., Good Companions (January), 1915

6Q1/prp5/B7/1rbP1K2/6N1/1P1k1N1R/2b1pp2/4B3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.Sge5#
    • 1...Bd4
      • 2.Sfe5#
    • 1...Bb6
      • 2.Bxb5#
  • Keys
    • 1.d6!
      • threat
        • 2.Qc4#
      • 1...Ba3+
        • 2.Qd5#
      • 1...Be3+
        • 2.Sge5#
      • 1...Bb4+
        • 2.Qd5#
      • 1...Bd4+
        • 2.Sfe5#
      • 1...Bb6+
        • 2.Bxb5#
      • 1...Bxd6+
        • 2.Qd5#
      • 1...Bxb3
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(f);P_PINP(F),SBLOCK::S(E)
    • B(f);P_PINP(F),SBLOCK::R(D)+S(C),DCHECK
    • B(f);P_PINP(F),S_CUTR(h)::B(H),XR(e)
  • Actual
    • P(F);
    • Threat
      • QAB1(I)
    • Vars
      • B(f);CHECK,N_GUARD::QAR2(I)
      • B(f);CHECK,SBLOCK::S(E)
      • B(f);CHECK,SBLOCK::R(D)+S(C),DCHECK
      • B(f);CHECK,S_CUTR(h)::B(H),XR(e)
      • B(f);CHECK,N_GUARD,XP(F)::QAR2(I)
      • B(a);OGATE,XP(B)::QAR2(I),XB(a)
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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).