MESON Chess Problem Database

Problem Display
PID: 32850 (1n6/R2p4/3P2PQ/3BB3/2KN1pqp/3p4/pkP1P1pr/nb4Rr w - - 0 1)

Nietvelt, Gustaaf Josephus

3rd Prize, VPB, 1926

1n6/R2p4/3P2PQ/3BB3/2KN1pqp/3p4/pkP1P1pr/nb4Rr

#2

11 + 13

20 De Problemist 1929
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sb5#
      • 2.Sf5#
      • 2.Sc6#
      • 2.Se6#
    • 1...dxc2
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sb5#
      • 2.Sf5#
      • 2.Sc6#
      • 2.Se6#
    • 1...f3
      • 2.Qc1#
  • Keys
    • 1.Kxd3!
      • threat
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sc6#
        • 2.Se6#
      • 1...Qxe2+
        • 2.Sxe2#
      • 1...Qf3+
        • 2.Sxf3#
      • 1...Qh3+
        • 2.Sf3#
      • 1...Qf5+
        • 2.Sxf5#
      • 1...Qg3+
        • 2.Sf3#
      • 1...Qxg6+
        • 2.Sf5#
      • 1...Rh3+
        • 2.Sf3#
      • 1...Bxc2+
        • 2.Sxc2#
      • 1...Rxg1
        • 2.Sb3#
      • 1...Sxc2
        • 2.Sxc2#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sa6
        • 2.Sb5#
      • 1...Qh5
        • 2.Sf5#
      • 1...Qe6
        • 2.Sxe6#
      • 1...Qg5
        • 2.Sf5#
      • 1...Sc6
        • 2.Sxc6#
      • 1...f3
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
    • P(i);OGATE,P_PINS(E)::QAB1(J)
  • Actual
    • K(D);P_SPINP(B),S_FLIGHT,XP(h)
    • Threat
      • DUALS(6)
    • Vars
      • Q(j);CHECK,XP(C)::B(G)+S(E),XQ(j)
      • Q(j);CHECK::B(G)+S(E),XQ(j)
      • Q(j);CHECK::B(G)+S(E)
      • Q(j);CHECK,XP(I)::B(G)+S(E)
      • R(g);CHECK::B(G)+S(E)
      • B(b);CHECK,XP(B)::B(G)+S(E),XB(b)
      • R(c);XR(A)::B(G)+S(E)
      • S(a);XP(B)::B(G)+S(E),XS(a)
      • S(a);::B(G)+S(E),XS(a)
      • S(m);::B(G)+S(E)
      • Q(j);::B(G)+S(E)
      • Q(j);::B(G)+S(E),XQ(j)
      • S(m);::B(G)+S(E),XS(m)
      • P(i);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).