MESON Chess Problem Database

Problem Display
PID: 23603 (6b1/6pk/7P/7Q/6B1/8/8/4K3 w - - 0 1)

Mach, Julius Zdenek

Vynalezy a pokroky, 1907

6b1/6pk/7P/7Q/6B1/8/8/4K3

#2

4 + 3

3360 Simple Two-move Themes 1924
2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Qg6+?
      • 1...Kh8
        • 2.Qxg7#
        • 2.hxg7#
      • 1...Kxg6!
    • 1.Qf7?
      • threat
        • 2.Qxg7#
      • 1...Kxh6
        • 2.Qh5#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Bxf7!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Kxh6
        • 2.Qh5#
      • 1...Kh8
        • 2.Qxg7#
      • 1...gxh6
        • 2.Bf5#
      • 1...g5
        • 2.Qg7#
      • 1...g6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • Q(C);P_PINP(a)
      • Threat
        • QAR1(C),XP(a)
      • Vars
        • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XP(D)::QAR1(C)
        • K(b);N_SPINP(a),P-FLIGHT::QAB1(C),XP(a)
      • Refutation
        • B(c);N_SPINP(a),XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(a)
    • Vars
      • K(b);S_FLIGHT::QAR1(C),XP(a)
      • K(b);OGATEB,P-FLIGHT,XP(D)::QAR1(C)
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(C),XP(a)
      • P(a);N_GUARD,SBLOCK,XP(D)::B(B)
      • P(a);::QAR1(C)
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).