MESON Chess Problem Database

Problem Display
PID: 200375 (1Q3b2/1N1p2q1/n7/2R3p1/3kP3/4pPK1/4b3/2N5 w - - 0 1)

Kuijers, LA

Op de Hoogte, 1909

1Q3b2/1N1p2q1/n7/2R3p1/3kP3/4pPK1/4b3/2N5

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5+
      • 2.Qxe5#
    • 1...Qh6
      • 2.Qe5#
    • 1...Qg6
      • 2.Qe5#
    • 1...Qf7
      • 2.Qe5#
    • 1...Qh7
      • 2.Qe5#
    • 1...Qg8
      • 2.Qe5#
    • 1...Bd3
      • 2.Sb3#
    • 1...Bd6+
      • 2.Qxd6#
  • Keys
    • 1.Sa5!
      • threat
        • 2.Sab3#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Bd6+
        • 2.Qxd6#
      • 1...Kxc5
        • 2.Scb3#
      • 1...Bxf3
        • 2.Rc4#
      • 1...Bxc5
        • 2.Qb2#
      • 1...Sxc5
        • 2.Qb2#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Qf7
        • 2.Qe5#
      • 1...Qg8
        • 2.Qe5#
      • 1...Bd1
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(g);CHECK,N_GUARD::QAB1(G),XQ(g)
    • Q(g);N_GUARD::QAB1(G)
    • B(a);SBLOCK::S(A)
    • B(h);CHECK,N_GUARD::QAR2(G),XB(h)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • Q(g);CHECK,N_GUARD::QAB1(G),XQ(g)
      • B(h);CHECK,N_GUARD::QAR2(G),XB(h)
      • K(c);S_FLIGHT,XR(E)::S(A)
      • B(a);N_GUARD,XP(B)::R1(E)
      • B(h);SBLOCK,XR(E)::QAB(G)
      • S(e);SBLOCK,XR(E)::QAB(G)
      • B(a);N_GUARD::R1(E),XB(a)
      • Q(g);N_GUARD::QAB1(G)
      • B(a);N_GUARD::R1(E)
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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).