MESON Chess Problem Database

Problem Display
PID: 16234 (k7/pbKn4/8/8/B1Q5/8/8/8 w - - 0 1)

Zimmer, Eligiusz

StrateGems, 2000

k7/pbKn4/8/8/B1Q5/8/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bc6
      • 2.Bxc6#
      • 2.Qxc6#
  • Tries
    • 1.Qg8+?
      • 1...Bc8
        • 2.Bc6#
      • 1...Sb8
        • 2.Qxb8#
      • 1...Sf8!
    • 1.Qc6?
      • threat
        • 2.Qxb7#
      • 1...Bxc6
        • 2.Bxc6#
      • 1...Sc5!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Bxb7#
      • 1...Bxc6
        • 2.Qxc6#
      • 1...a5
        • 2.Qa6#
      • 1...a6
        • 2.Qxa6#
      • 1...Sc5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(b);OGATEB::QAB(B),XB(b)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(b);P_SPINB(b),S_CUTS(c),S_CUTS(c)::B(A)
        • S(c);N_GUARD,P_SPINS(c)::QAR1(B),XS(c)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(B);P_PINB(b)
      • Threat
        • QAB1(B),XB(b)
      • Vars
        • B(b);N_SPINB(b),OGATE,XQ(B)::B(A),XB(b)
      • Refutation
        • S(c);
  • Actual
    • B(A);P_PINB(b)
    • Threat
      • B(A),XB(b)
    • Vars
      • B(b);N_SPINB(b),OGATE,XB(A)::QAB(B),XB(b)
      • P(a);OGATEB::QAR2(B)
      • P(a);OGATEB::QAR2(B),XP(a)
      • S(c);N_GUARD::QAR(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).