MESON Chess Problem Database

Problem Display
PID: 630 (6b1/2p5/2RNkB2/5N2/8/7Q/8/4K3 w - - 0 1)

Clark, WA

British Chess Magazine, 1901

6b1/2p5/2RNkB2/5N2/8/7Q/8/4K3

#2

6 + 3

3360 Simple Two-move Themes 1924
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Se7#
  • Tries
    • 1.Sd4+?
      • 1...Kd5
        • 2.Qg2#
        • 2.Qf5#
        • 2.Qh1#
        • 2.Qb3#
        • 2.Qf3#
        • 2.Qh5#
      • 1...Kxf6!
    • 1.Sg7+?
      • 1...Kd5
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...Kxf6!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Se7#
        • 2.Rc5#
        • 2.Qe4#
      • 1...Kd7
        • 2.Qe8#
      • 1...Kxf6!
  • Keys
    • 1.Qh5!
      • 1...Kd5
        • 2.Sd4#
      • 1...Kxf6
        • 2.Sf7#
      • 1...Kd7
        • 2.Qe8#
      • 1...cxd6
        • 2.Rxd6#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XB(F)
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XB(F)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XB(F)
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAR(B)+S(C)
      • K(a);P-FLIGHT,XB(F)::R(D)+S(E)
      • K(a);S_FLIGHT::QAB1(B)
      • P(b);OGATE,P_SPINP(b),XS(E)::R1(D),XP(b)
      • B(c);N_GUARD::QAB1(B),XB(c)
      • B(c);N_GUARD::QAB1(B)
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).