MESON Chess Problem Database

Problem Display
PID: 156162 (8/2Qn1K1B/1N1p3P/4k1B1/b1pn1N2/1qPp3r/1pp1pr2/5R2 w - - 0 1)

Termaat, Nicolaas Ljsbrand Johanne

HM., Dagens Nyheder, 1931-1932

8/2Qn1K1B/1N1p3P/4k1B1/b1pn1N2/1qPp3r/1pp1pr2/5R2

#2

9 + 13

1577 Jaarboek 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Sxc4#
    • 1...Rxf4+
      • 2.Bxf4#
    • 1...Sb5
      • 2.Sxd7#
    • 1...Sc6
      • 2.Sxd7#
  • Keys
    • 1.Qxc4!
      • threat
        • 2.cxd4#
      • 1...Qxc4+
        • 2.Sxc4#
      • 1...Rxf4+
        • 2.Bxf4#
      • 1...Qxc3
        • 2.Qd5#
      • 1...Qxb6
        • 2.Qd5#
      • 1...d5
        • 2.Qc7#
      • 1...Sf3
        • 2.Sxd3#
      • 1...Sb5
        • 2.Sxd7#
      • 1...Sf5
        • 2.Sg6#
      • 1...Sc6
        • 2.Sxd7#
      • 1...Se6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • Q(e);N_GUARD::S(E),XP(i)
    • R(d);CHECK,OGATE,XS(C)::B(D),XR(d)
    • S(j);S_CUTB(h)::S(E),XS(m)
  • Actual
    • Q(G);N_PINP(l),P_SPINQ(G),XP(i)
    • Threat
      • P(B),XS(j)
    • Vars
      • Q(e);CHECK,XQ(G)::S(E),XQ(e)
      • R(d);CHECK,OGATE,XS(C)::B(D),XR(d)
      • Q(e);N_GUARD,N_PINQ(G),XP(B)::QAR1(G)
      • Q(e);N_GUARD,N_PINQ(G),XS(E)::QAR1(G)
      • P(l);N_PINQ(G)::QAB(G)
      • S(j);N_PINS(C)::S(C),XP(f)
      • S(j);S_CUTB(h)::S(E),XS(m)
      • S(j);N_PINS(C),SBLOCK::S(C)
      • S(j);N_PINQ(G)::QAR1(G)
HTML5 logo

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).