MESON Chess Problem Database

Problem Display
PID: 102922 (6BK/5N1p/2rp1p1r/1P1kPP2/N2p3p/B2Q2b1/5pq1/8 w - - 0 1)

Visserman, Eeltje

The Chess Problem, 1946

6BK/5N1p/2rp1p1r/1P1kPP2/N2p3p/B2Q2b1/5pq1/8

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sb6#
    • 1...Rc2
      • 2.Sb6#
    • 1...Rc3
      • 2.Sxc3#
      • 2.Sb6#
    • 1...Rc4
      • 2.Sb6#
    • 1...Rc5
      • 2.Sb6#
    • 1...Ra6
      • 2.Sc3#
    • 1...Rb6
      • 2.Sc3#
      • 2.Sxb6#
    • 1...Rc7
      • 2.Sb6#
    • 1...Rc8
      • 2.Sb6#
    • 1...Bxe5
      • 2.Sg5#
    • 1...dxe5
      • 2.Sd6#
    • 1...fxe5
      • 2.Sxh6#
  • Tries
    • 1.Qf3+?
      • 1...Kc4
        • 2.Sxd6#
      • 1...Qxf3!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qxd4#
      • 1...Rxc5
        • 2.Sb6#
      • 1...Bxe5
        • 2.Sg5#
      • 1...dxc5
        • 2.Sc3#
      • 1...dxe5
        • 2.Sd6#
      • 1...fxe5
        • 2.Sxh6#
      • 1...Qe4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(g);N_GUARD::S(C)
    • R(g);N_GUARD,P_PINB(H)::S(C)
    • B(c);SBLOCK,XP(E)::B(H)+S(G)
    • P(h);SBLOCK,XP(E)::B(H)+S(G)
    • P(i);SBLOCK,XP(E)::B(H)+S(G),XR(j)
  • Tries
    • Try
      • Q(B);CHECK,N_PINP(d)
      • Vars
        • K(f);S_FLIGHT::B(H)+S(G),DCHECK,XP(h)
      • Refutation
        • Q(b);XQ(B)
  • Actual
    • B(A);
    • Threat
      • QAR1(B),XP(d)
    • Vars
      • R(g);N_GUARD,SBLOCK,XB(A)::S(C)
      • B(c);SBLOCK,XP(E)::B(H)+S(G)
      • P(h);SBLOCK,XB(A)::S(C)
      • P(h);SBLOCK,XP(E)::B(H)+S(G)
      • P(i);SBLOCK,XP(E)::B(H)+S(G),XR(j)
      • Q(b);SBLOCK::QAB(B)
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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).