MESON Chess Problem Database

Problem Display
PID: 156306 (1n2B3/1K6/3k4/8/3BQb2/8/8/8 w - - 0 1)

Zimmer, Eligiusz

Best Problems, 2006

1n2B3/1K6/3k4/8/3BQb2/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qe5#
    • 1...Bd2
      • 2.Qe5#
    • 1...Be3
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bg5
      • 2.Qe5#
    • 1...Bh6
      • 2.Qe5#
  • Tries
    • 1.Qf5?
      • threat
        • 2.Bc5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Be3
        • 2.Qe5#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Ke7!
    • 1.Qxf4+?
      • 1...Kd5
        • 2.Bf7#
      • 1...Ke6
        • 2.Qe5#
      • 1...Ke7!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Be7#
      • 1...Kc5
        • 2.Qd4#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bg5
        • 2.Qe5#
      • 1...Sc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
  • Tries
    • Try
      • Q(B);
      • Threat
        • B(A)
      • Vars
        • B(a);N_GUARD::QAB1(B),XB(a)
        • B(a);N_GUARD::QAB1(B)
        • S(c);N_GUARD::QAR1(B)
        • S(c);N_GUARD::QAR1(B),XS(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK,XB(a)
      • Vars
        • K(b);P-FLIGHT::B(D)
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(A);
    • Threat
      • B(A)
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • B(a);N_GUARD::QAB1(B),XB(a)
      • B(a);N_GUARD::QAB1(B)
      • S(c);N_GUARD::QAR1(B),XS(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).