MESON Chess Problem Database

Problem Display
PID: 221075 (8/8/8/1p6/6Q1/5P1K/3pkB2/3N1N2 w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1998

8/8/8/1p6/6Q1/5P1K/3pkB2/3N1N2

#2

6 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qe4#
  • Tries
    • 1.Sg3+?
      • 1...Kd3
        • 2.Qe4#
      • 1...Kxd1!
    • 1.Qd7?
      • 1...Kxd1
        • 2.Qxd2#
      • 1...Kxf1
        • 2.Qxb5#
        • 2.Qd3#
      • 1...Kxf3
        • 2.Qg4#
      • 1...b4!
    • 1.Qc4+?
      • 1...Kxd1
        • 2.Se3#
      • 1...Kxf3
        • 2.Sxd2#
        • 2.Sh2#
        • 2.Qg4#
      • 1...bxc4!
    • 1.Qd4?
      • 1...Kxd1
        • 2.Qxd2#
      • 1...Kxf1
        • 2.Qd3#
      • 1...Kxf3
        • 2.Qe3#
        • 2.Qg4#
      • 1...b4!
    • 1.Qe4+?
      • 1...Kxf1
        • 2.Qd3#
      • 1...Kxd1!
  • Keys
    • 1.Qb4!
      • 1...Kxd1
        • 2.Qxd2#
      • 1...Kxf1
        • 2.Qxb5#
      • 1...Kd3
        • 2.Qe4#
      • 1...Kxf3
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(F)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT,XS(A)
    • Try
      • Q(F);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XS(A)::QAR1(F),XP(a)
        • K(b);OGATEB,S_FLIGHT,XP(D)::QAB1(F)
      • Refutation
        • P(c);
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(A)::S(B)
      • Refutation
        • P(c);XQ(F)
    • Try
      • Q(F);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XS(A)::QAR1(F),XP(a)
        • K(b);S_FLIGHT,XS(B)::QAB(F)
      • Refutation
        • P(c);
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(B)::QAB(F)
      • Refutation
        • K(b);S_FLIGHT,XS(A)
  • Actual
    • Q(F);
    • Vars
      • K(b);S_FLIGHT,XS(A)::QAR1(F),XP(a)
      • K(b);S_FLIGHT,XS(B)::QAB(F),XP(c)
      • K(b);S_FLIGHT::QAB1(F)
      • K(b);OGATEB,S_FLIGHT,XP(D)::QAB1(F)
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).