MESON Chess Problem Database

Problem Display
PID: 40470 (4br1n/8/7Q/3PPk2/3K4/7P/8/8 w - - 0 1)

Ehrenstein, Moritz

Wilkes-Barre Record, 1888

4br1n/8/7Q/3PPk2/3K4/7P/8/8

#2

5 + 4

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Qxf6#
    • 1...Rg8
      • 2.Qf6#
    • 1...Bf7
      • 2.Qf6#
    • 1...Sf7
      • 2.Qf6#
  • Tries
    • 1.Qh5+?
      • 1...Kf4
        • 2.Qg4#
      • 1...Bxh5!
    • 1.Qe6+?
      • 1...Kf4
        • 2.Qg4#
      • 1...Kg5!
  • Keys
    • 1.Ke3!
      • 1...Kxe5
        • 2.Qe6#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Rf7
        • 2.Qh5#
      • 1...Rg8
        • 2.Qf6#
      • 1...Ba4
        • 2.Qh5#
      • 1...Bb5
        • 2.Qh5#
      • 1...Bh5
        • 2.Qxh5#
      • 1...Bc6
        • 2.Qh5#
      • 1...Bg6
        • 2.Qf4#
      • 1...Bd7
        • 2.Qh5#
      • 1...Bf7
        • 2.Qf6#
      • 1...Sg6
        • 2.Qh5#
      • 1...Sf7
        • 2.Qf6#

This is a version of 4723

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::QAR1(E),XR(c)
    • R(c);N_GUARD::QAR1(E)
    • B(b);S_CUTR(c)::QAR1(E)
    • S(d);S_CUTR(c)::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • B(b);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAR1(E)
      • R(c);N_GUARD::QAR1(E),XR(c)
      • R(c);S_CUTB(b)::QAR2(E)
      • R(c);N_GUARD::QAR1(E)
      • B(b);N_GUARD::QAR2(E)
      • B(b);N_GUARD::QAR2(E),XB(b)
      • B(b);SBLOCK::QAR1(E)
      • B(b);S_CUTR(c)::QAR1(E)
      • S(d);S_CUTB(b)::QAR2(E)
      • S(d);S_CUTR(c)::QAR1(E)
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).