MESON Chess Problem Database

Problem Display
PID: 31250 (B3QB2/2r3p1/1r2p1K1/3pk3/4N3/4Ppn1/2p2N2/3q4 w - - 0 1)

le Grand, Piet

18th Place, 06. WCCT, 1998-2000

B3QB2/2r3p1/1r2p1K1/3pk3/4N3/4Ppn1/2p2N2/3q4

#2

7 + 10

3447 06. WCCT Award 2001
102 Probleemblad 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Bd6#
    • 1...Rb2
      • 2.Bd6#
    • 1...Rb3
      • 2.Bd6#
    • 1...Rb4
      • 2.Bd6#
    • 1...Rb5
      • 2.Bd6#
    • 1...Rd6
      • 2.Bxd6#
    • 1...Rbb7
      • 2.Bd6#
    • 1...Rb8
      • 2.Bd6#
    • 1...Rc3
      • 2.Bxg7#
    • 1...Rc4
      • 2.Bxg7#
    • 1...Rc5
      • 2.Bxg7#
    • 1...Rc6
      • 2.Bxg7#
    • 1...Rc8
      • 2.Bxg7#
    • 1...Sxe4
      • 2.Sg4#
    • 1...dxe4
      • 2.Sg4#
    • 1...d4
      • 2.Sg4#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sg4#
      • 1...Qd3+
        • 2.Sxd3#
      • 1...Qd4
        • 2.Sxf3#
      • 1...Rb4
        • 2.Qxe6#
      • 1...Rc4
        • 2.Sf7#
      • 1...Re7!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sg4#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Rb4
        • 2.Bd6#
      • 1...Rc4
        • 2.Bxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 14
  • Sets
    • R(g);N_GUARD::B(G)
    • R(g);N_GUARD::B(G),XR(g)
    • R(i);N_GUARD::B(G),XP(j)
    • S(d);SBLOCK,XS(C)::S(A)
    • P(e);XS(C)::S(A)
    • P(e);::S(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(A)
      • Vars
        • Q(a);CHECK,N_GUARD::S(A),XQ(a)
        • Q(a);N_GUARD::S(C),XP(c)
        • R(g);N_GUARD::QAR1(F),XP(h)
        • R(i);N_GUARD::S(C)
      • Refutation
        • R(i);N_SPINP(h)
  • Actual
    • Q(F);N_PINP(h)
    • Threat
      • S(A)
    • Vars
      • Q(a);N_GUARD::QAB1(F),XQ(a)
      • R(g);N_GUARD::B(G)
      • R(i);N_GUARD::B(G),XP(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).