MESON Chess Problem Database

Problem Display
PID: 133311 (4bbN1/1p2p1pQ/1n2p3/R2pkN2/6PP/B1pPP3/8/5Kn1 w - - 0 1)

Hirschenson, Aaron

5th Place, Liga Problemista, 2006/1

4bbN1/1p2p1pQ/1n2p3/R2pkN2/6PP/B1pPP3/8/5Kn1

#2

10 + 11

14475 Mat Plus Review 2007

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Bb2#
    • 1...exf5
      • 2.Qxf5#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qe4#
        • 2.d4#
      • 1...Bg6
        • 2.d4#
      • 1...Se2
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...g6
        • 2.d4#
      • 1...Bb5!
    • 1.Sfxe7?
      • threat
        • 2.Qe4#
        • 2.d4#
      • 1...Bb5
        • 2.Sg6#
      • 1...Bg6
        • 2.Sxg6#
      • 1...Se2
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...g6!
    • 1.Sxg7?
      • threat
        • 2.Qe4#
        • 2.d4#
      • 1...Bb5
        • 2.Qh5#
      • 1...Se2
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Bg6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe4#
        • 2.d4#
      • 1...Bb5
        • 2.Sf7#
      • 1...Bg6
        • 2.d4#
      • 1...Se2
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...g6
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • P(b);OGATEB::B(B)
    • P(f);OGATE,XS(H)::QAR1(I),XP(f)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(j);::P(C)
        • S(a);::QAR1(I)
        • P(i);::P(C)
      • Refutation
        • B(j);N_SPINP(c),P_PINP(C)
    • Try
      • S(H);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(j);N_GUARD,N_SPINP(c),P_PINP(C)::S(H)
        • B(j);N_GUARD::S(H),XB(j)
        • S(a);::QAR1(I)
      • Refutation
        • P(i);
    • Try
      • S(H);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(j);N_GUARD,N_SPINP(c),P_PINP(C)::QAR(I)
        • S(a);::QAR1(I)
      • Refutation
        • B(j);
  • Actual
    • S(H);
    • Threat
      • DUALS(2)
    • Vars
      • B(j);N_GUARD,N_SPINP(c),P_PINP(C)::S(H)
      • B(j);::P(C)
      • S(a);::QAR1(I)
      • P(i);::P(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).