MESON Chess Problem Database

Problem Display
PID: 57450 (Qb3B1r/3P1kPp/5N1K/6P1/2R4p/1RprN2q/B7/8 w - - 0 1)

Nietvelt, Gustaaf Josephus

Schackvarlden, 1930

Qb3B1r/3P1kPp/5N1K/6P1/2R4p/1RprN2q/B7/8

#2

11 + 8

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1953

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.d8S#
    • 1...Bh2
      • 2.Qe8#
    • 1...Bg3
      • 2.Qe8#
    • 1...Bf4
      • 2.Qe8#
    • 1...Be5
      • 2.Qe8#
    • 1...Bd6
      • 2.Qe8#
      • 2.d8S#
    • 1...Ba7
      • 2.Qe8#
    • 1...Bc7
      • 2.Qe8#
  • Tries
    • 1.Qd5+?
      • 1...Qe6
        • 2.d8S#
      • 1...Rxd5!
  • Keys
    • 1.Rb7!
      • threat
        • 2.d8S#
      • 1...Ke6
        • 2.Re4#
      • 1...Qxd7
        • 2.Rd4#
      • 1...Rxd7
        • 2.Rg4#
      • 1...Bc7
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD,XS(C)::P=S
    • B(g);OGATE::QAB1(J)
    • B(g);OGATE,P_PINP(E)::QAB1(J)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • Q(c);N_GUARD,P_PINS(F),P_SPINQ(c),S_CUTR(b)::P=S
      • Refutation
        • R(b);XQ(J)
  • Actual
    • R(B);
    • Threat
      • P=S
    • Vars
      • K(e);S_FLIGHT::B(A)+R(D),DCHECK
      • Q(c);N_GUARD,P_SPINQ(c),XP(H)::B(A)+R(D)
      • R(b);N_GUARD,P_SPINR(b),XP(H)::B(A)+R(D)
      • B(g);OGATE::QAB1(J)
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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).