MESON Chess Problem Database

Problem Display
PID: 67798 (3nN3/p4n1R/pkB5/p4Rp1/2p5/2ppK3/5B2/7Q w - - 0 1)

Hirschenson, Aaron

2/3 HM., Phenix, 1994

3nN3/p4n1R/pkB5/p4Rp1/2p5/2ppK3/5B2/7Q

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Kd2#
    • 1...d2
      • 2.Ke2#
    • 1...g4
      • 2.Kf4#
  • Tries
    • 1.Ba8?
      • threat
        • 2.Kf3#
        • 2.Ke4#
        • 2.Qb1#
      • 1...Sd6
        • 2.Kf3#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Se6
        • 2.Qc6#
        • 2.Qb7#
        • 2.Qb1#
      • 1...Sb7
        • 2.Qxb7#
      • 1...c2
        • 2.Kd2#
        • 2.Kf3#
        • 2.Ke4#
      • 1...g4
        • 2.Ke4#
        • 2.Kf4#
        • 2.Qb1#
      • 1...Se5!
  • Keys
    • 1.Ba4!
      • threat
        • 2.Qb1#
      • 1...Se5
        • 2.Ke4#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sd6
        • 2.Kf3#
      • 1...c2
        • 2.Kd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(a);::B(B)+K(C)
    • P(b);::B(B)+K(C)
    • P(e);::B(B)+K(C)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(i);::B(B)+K(C)
        • S(j);N_GUARD::QAR1(A),XS(j)
      • Refutation
        • S(i);
  • Actual
    • B(E);
    • Threat
      • QAR(A)
    • Vars
      • S(i);::B(B)+K(C)
      • S(j);N_GUARD::QAR1(A),XS(j)
      • P(a);::B(B)+K(C)
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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).