MESON Chess Problem Database

Problem Display
PID: 264091 (8/2K5/3N4/1pkp4/8/P1B1P3/1q6/3Bb2b w - - 0 1)

Oosterholt, Cornelis Johannes

3rd Comm., Tijdschrift vd KNSB, 1942

8/2K5/3N4/1pkp4/8/P1B1P3/1q6/3Bb2b

#2

6 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Bd4#
    • 1...Qb1
      • 2.Bd4#
    • 1...Qa2
      • 2.Bd4#
    • 1...Qc2
      • 2.Bd4#
    • 1...Qe2
      • 2.Bd4#
    • 1...Qf2
      • 2.Bd4#
    • 1...Qg2
      • 2.Bd4#
    • 1...Qh2
      • 2.Bd4#
    • 1...Qb3
      • 2.Bd4#
    • 1...Qb4
      • 2.axb4#
  • Keys
    • 1.Bb3!
      • threat
        • 2.Sb7#
      • 1...Qxb3
        • 2.Bd4#
      • 1...Qh2
        • 2.Bd4#
      • 1...Bg3
        • 2.Bb4#
      • 1...b4
        • 2.axb4#
      • 1...d4
        • 2.exd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(c);N_GUARD::B(C)
    • Q(c);N_GUARD,P_PINS(E)::B(C)
    • Q(c);OGATE::P(B),XQ(c)
  • Actual
    • B(A);
    • Threat
      • S(E)
    • Vars
      • Q(c);N_GUARD,XB(A)::B(C)
      • Q(c);N_GUARD,P_PINS(E)::B(C)
      • B(a);N_GUARD,P_PINS(E)::B(C)
      • P(d);OGATE::P(B),XP(d)
      • P(f);OGATE::P(D),XP(f)
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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).