MESON Chess Problem Database

Problem Display
PID: 79242 (8/B4p2/1r3P2/3pn1K1/1p1Pk3/1N1p1b2/r1n2p2/5N1Q w - - 0 1)

Bukne, Roald

Schackvarlden, 1945

8/B4p2/1r3P2/3pn1K1/1p1Pk3/1N1p1b2/r1n2p2/5N1Q

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Sbd2#
    • 1...Ra6
      • 2.Sbd2#
    • 1...Rc6
      • 2.Sbd2#
    • 1...Rd6
      • 2.Sbd2#
    • 1...Re6
      • 2.Sbd2#
    • 1...Rxf6
      • 2.Sbd2#
    • 1...Rb7
      • 2.Sbd2#
    • 1...Rb8
      • 2.Sbd2#
    • 1...Se3
      • 2.Sg3#
    • 1...Sxd4
      • 2.Sc5#
    • 1...Sc4
      • 2.Qh7#
    • 1...Sg4
      • 2.Qh7#
    • 1...Sc6
      • 2.Qh7#
    • 1...Sd7
      • 2.Qh7#
  • Tries
    • 1.Qh4+?
      • 1...Sg4
        • 2.Qh7#
      • 1...Bg4!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qf5#
      • 1...Rxf6
        • 2.Sbd2#
      • 1...Sxd4
        • 2.Sc5#
      • 1...Bg4
        • 2.Sfd2#
      • 1...Se3
        • 2.Sg3#
      • 1...Sg4
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(j);::S(C)
    • R(j);XP(F)::S(C)
    • S(b);SBLOCK::S(A)
    • S(b);SBLOCK,XP(D)::S(C)
    • S(i);N_GUARD::QAB(B)
  • Tries
    • Try
      • Q(B);CHECK,N_PINB(e)
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB(B)
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • Q(B);N_PINB(e)
    • Threat
      • QAB1(B)
    • Vars
      • R(j);XP(F)::S(C)
      • S(b);SBLOCK,XP(D)::S(C)
      • B(e);::S(A)
      • S(b);SBLOCK::S(A)
      • S(i);N_GUARD::QAB(B)
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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).