MESON Chess Problem Database

Problem Display
PID: 234617 (2B1k3/8/5Qb1/5n2/7B/7K/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2003

2B1k3/8/5Qb1/5n2/7B/7K/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.Qd8#
    • 1...Se3
      • 2.Qe7#
    • 1...Sg3
      • 2.Qe7#
    • 1...Sd4
      • 2.Qe7#
    • 1...Sd6
      • 2.Qe7#
    • 1...Sh6
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
    • 1...Sg7
      • 2.Qe7#
  • Tries
    • 1.Ba6?
      • threat
        • 2.Bb5#
      • 1...Bf7
        • 2.Qd8#
      • 1...Se7
        • 2.Qxe7#
      • 1...Sd4
        • 2.Qe7#
      • 1...Sd6
        • 2.Qe7#
      • 1...Kd7!
    • 1.Be6?
      • threat
        • 2.Qd8#
        • 2.Qh8#
      • 1...Bf7
        • 2.Qd8#
        • 2.Qxf7#
      • 1...Se7
        • 2.Qxe7#
      • 1...Bh7
        • 2.Qd8#
        • 2.Qf7#
      • 1...Sh6
        • 2.Qe7#
        • 2.Qd8#
      • 1...Sg7
        • 2.Qe7#
        • 2.Qd8#
      • 1...Sxh4!
    • 1.Qe6+?
      • 1...Se7
        • 2.Qxe7#
      • 1...Kf8!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Bc6#
      • 1...Kd7
        • 2.Qc6#
      • 1...Bf7
        • 2.Qd8#
      • 1...Se7
        • 2.Qxe7#
      • 1...Sd4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • B(b);SBLOCK::QAR1(C)
    • S(a);N_GUARD::QAR1(C)
    • S(a);N_GUARD::QAR1(C),XS(a)
  • Tries
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • B(b);SBLOCK::QAR1(C)
        • S(a);N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD::QAR1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAR1(C),XS(a)
      • Refutation
        • S(a);XB(B)
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR1(C),XS(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • K(c);S_FLIGHT::QAB1(C)
      • B(b);SBLOCK::QAR1(C)
      • S(a);N_GUARD::QAR1(C),XS(a)
      • S(a);N_GUARD::QAR1(C)
HTML5 logo

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).