MESON Chess Problem Database

Problem Display
PID: 120135 (8/3p1p2/5P2/2pPk1p1/1pP3P1/1P1p1K2/3Q3P/8 w - - 0 1)

von Beveren, J

Tijdschrift vd NSB, 0000

8/3p1p2/5P2/2pPk1p1/1pP3P1/1P1p1K2/3Q3P/8

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qb2#
    • 1...d6
      • 2.Qb2#
  • Tries
    • 1.Qe1+?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6
        • 2.Qg3#
      • 1...Kxf6!
    • 1.Qxg5+?
      • 1...Kd6
        • 2.Qf4#
      • 1...Kd4!
    • 1.h3?
      • 1...Kd4
        • 2.Qb2#
      • 1...Kd6
        • 2.Qh2#
      • 1...d6
        • 2.Qb2#
      • 1...Kxf6!
  • Keys
    • 1.h4!
      • 1...Kd4
        • 2.Qb2#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kxf6
        • 2.Qxg5#
      • 1...gxh4
        • 2.Qf4#
      • 1...d6
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINP(a),S_FLIGHT::QAB(A)
    • P(f);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB(A)
      • Refutation
        • K(d);S_FLIGHT,XP(H)
    • Try
      • Q(A);CHECK,XP(e)
      • Vars
        • K(d);S_FLIGHT::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(B);
      • Vars
        • K(d);P_SPINP(a),S_FLIGHT::QAB(A)
        • K(d);S_FLIGHT::QAB(A)
        • P(f);SBLOCK::QAB(A)
      • Refutation
        • K(d);S_FLIGHT,XP(H)
  • Actual
    • P(B);
    • Vars
      • K(d);P_SPINP(a),S_FLIGHT::QAB(A)
      • K(d);S_FLIGHT::QAB(A)
      • K(d);S_FLIGHT,XP(H)::QAB1(A),XP(e)
      • P(e);N_GUARD,XP(B)::QAB1(A)
      • P(f);SBLOCK::QAB(A)
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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).