MESON Chess Problem Database

Problem Display
PID: 254460 (8/8/8/8/8/7P/3QpkBK/8 w - - 0 1)

Brixi, Heinz

Die Schwalbe, 1930

8/8/8/8/8/7P/3QpkBK/8

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Bf3?
      • threat
        • 2.Qxe2#
      • 1...Kf1
        • 2.Qxe2#
      • 1...Kxf3!
    • 1.Qd3?
      • threat
        • 2.Qg3#
      • 1...e1Q
        • 2.Qf3#
      • 1...e1S
        • 2.Qd2#
      • 1...e1B
        • 2.Qf3#
      • 1...e1R
        • 2.Qf3#
      • 1...Ke1!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qg3#
      • 1...e1Q
        • 2.Qf3#
      • 1...e1S
        • 2.Qd2#
      • 1...e1B
        • 2.Qf3#
      • 1...e1R
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAB1(A),XP(a)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XB(B)
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAB1(A)
      • Vars
        • P(a);SBLOCK::QAR1(A)
        • P(a);OGATEB::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAB1(A)
    • Vars
      • P(a);SBLOCK::QAR1(A)
      • P(a);OGATEB::QAR2(A)
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).