MESON Chess Problem Database

Problem Display
PID: 43510 (Q5b1/5Bp1/Kp4r1/1p1q2r1/3b2p1/B1P1p3/kP2R3/N6R w - - 0 1)

Nietvelt, Gustaaf Josephus

1st Prize, Schackvarlden, 1929

Q5b1/5Bp1/Kp4r1/1p1q2r1/3b2p1/B1P1p3/kP2R3/N6R

#2

9 + 11

20 De Problemist 1930
785 Het Belgisch Schaakbord (L'Echiquier Belge) 1953
5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qxd5#
  • Keys
    • 1.Bb4!
      • threat
        • 2.b3#
      • 1...Bxc3
        • 2.bxc3#
      • 1...Qb3
        • 2.Kb7#
      • 1...Qc4
        • 2.Kb7#
      • 1...Bc5
        • 2.Kxb5#
      • 1...Be5
        • 2.Qxd5#
      • 1...Bf6
        • 2.Kxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(c);S_CUTR(g)::QAB(I),XQ(f)
  • Actual
    • B(E);
    • Threat
      • R(D)+P(C)
    • Vars
      • B(c);OGATE,XP(F)::R(D)+P(C),XB(c)
      • Q(f);::QAR(I)+K(G)
      • B(c);::QAR(I)+K(G),XP(e)
      • B(c);S_CUTR(g)::QAB(I),XQ(f)
      • B(c);::QAR(I)+K(G),XP(h)
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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).