MESON Chess Problem Database

Problem Display
PID: 10482 (7K/4B2p/4n1k1/6N1/6Q1/8/8/8 w - - 0 1)

Haring, Jacobus

HM., Borsodi Vegyesz, 1965

7K/4B2p/4n1k1/6N1/6Q1/8/8/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996
145 StrateGems 2008
136 Problem Observer 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Sf7#
    • 1...h5
      • 2.Qxe6#
  • Tries
    • 1.Sxe6+?
      • 1...Kh6
        • 2.Bf8#
        • 2.Qg5#
      • 1...Kf7!
    • 1.Qe4+?
      • 1...Kh6
        • 2.Qxh7#
      • 1...Kh5!
  • Keys
    • 1.Kg8!
      • 1...Kh6
        • 2.Sf7#
      • 1...Sxg5
        • 2.Qxg5#
      • 1...Sd4
        • 2.Sf7#
      • 1...Sf4
        • 2.Sf7#
      • 1...Sc5
        • 2.Sf7#
      • 1...Sc7
        • 2.Sf7#
      • 1...Sg7
        • 2.Sf7#
      • 1...Sd8
        • 2.Sf7#
      • 1...Sf8
        • 2.Sf7#
      • 1...h5
        • 2.Qxe6#
      • 1...h6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::S(B)
    • P(c);SBLOCK::QAR2(A),XS(a)
  • Tries
    • Try
      • S(B);CHECK,XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • K(b);P-FLIGHT::S(B)
      • S(a);OGATE,P_SPINS(a),XS(B)::QAR1(A),XS(a)
      • S(a);N_GUARD::QAR(A)+S(B)
      • P(c);SBLOCK::QAR2(A),XS(a)
      • P(c);SBLOCK::QAR(A)+S(B),XS(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).