MESON Chess Problem Database

Problem Display
PID: 122092 (3Q4/8/3P4/1N3N2/3K4/2P1P3/n1R1R1n1/3k4 w - - 0 1)

Niemeijer, Meindert

Busmen's Chess Review, 1969

3Q4/8/3P4/1N3N2/3K4/2P1P3/n1R1R1n1/3k4

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Rcd2#
    • 1...Sxc3
      • 2.Sxc3#
    • 1...Se1
      • 2.Red2#
    • 1...Sxe3
      • 2.Sxe3#
  • Tries
    • 1.Qg5?
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sxe3
        • 2.Sxe3#
      • 1...Sc1
        • 2.Rcd2#
      • 1...Se1
        • 2.Red2#
      • 1...Sf4
        • 2.Qg1#
      • 1...Sh4
        • 2.Qg1#
      • 1...Sb4!
    • 1.Qg8?
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sxe3
        • 2.Sxe3#
      • 1...Sc1
        • 2.Rcd2#
      • 1...Se1
        • 2.Red2#
      • 1...Sf4
        • 2.Qg1#
      • 1...Sh4
        • 2.Qg1#
      • 1...Sb4!
    • 1.e4?
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sc1
        • 2.Rcd2#
      • 1...Se1
        • 2.Se3#
        • 2.Red2#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sf4
        • 2.Se3#
      • 1...Sh4
        • 2.Se3#
      • 1...Sb4!
  • Keys
    • 1.Qa8!
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sxe3
        • 2.Sxe3#
      • 1...Sb4
        • 2.Qa1#
      • 1...Sc1
        • 2.Rcd2#
      • 1...Se1
        • 2.Red2#
      • 1...Sf4
        • 2.Qh1#
      • 1...Sh4
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R1(A)
    • S(b);XP(C)::S(F),XS(b)
    • S(c);SBLOCK::R1(B)
    • S(c);XP(D)::S(G),XS(c)
  • Tries
    • Try
      • Q(I);
      • Vars
        • S(b);XP(C)::S(F),XS(b)
        • S(c);XP(D)::S(G),XS(c)
        • S(b);SBLOCK::R1(A)
        • S(c);SBLOCK::R1(B)
        • S(c);OGATE::QAR(I)
      • Refutation
        • S(b);
    • Try
      • Q(I);
      • Vars
        • S(b);XP(C)::S(F),XS(b)
        • S(c);XP(D)::S(G),XS(c)
        • S(b);SBLOCK::R1(A)
        • S(c);SBLOCK::R1(B)
        • S(c);OGATE::QAR(I)
      • Refutation
        • S(b);
    • Try
      • P(D);
      • Vars
        • S(b);XP(C)::S(F),XS(b)
        • S(b);SBLOCK::R1(A)
        • S(c);N_GUARD::S(G),XS(c)
        • S(c);N_GUARD::S(G)
      • Refutation
        • S(b);
  • Actual
    • Q(I);
    • Vars
      • S(b);XP(C)::S(F),XS(b)
      • S(c);XP(D)::S(G),XS(c)
      • S(b);OGATE::QAR(I)
      • S(b);SBLOCK::R1(A)
      • S(c);SBLOCK::R1(B)
      • S(c);OGATE::QAR(I)
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).