MESON Chess Problem Database

Problem Display
PID: 143382 (8/3B4/8/6RQ/8/2pk4/RnN2n2/4Kb2 w - - 0 1)

Colville, Robert A

British Chess Magazine, 1894

8/3B4/8/6RQ/8/2pk4/RnN2n2/4Kb2

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Qxe2#
    • 1...Bg2
      • 2.Qe2#
    • 1...Bh3
      • 2.Qe2#
  • Tries
    • 1.Rg3+?
      • 1...Kc4
        • 2.Be6#
        • 2.Qb5#
      • 1...Ke4
        • 2.Qf5#
      • 1...Kxc2!
    • 1.Qf3+?
      • 1...Kc4
        • 2.Be6#
        • 2.Qd5#
      • 1...Kxc2!
    • 1.Qg6+?
      • 1...Kc4
        • 2.Be6#
      • 1...Se4!
    • 1.Qh7+?
      • 1...Kc4
        • 2.Be6#
      • 1...Se4!
  • Keys
    • 1.Rg2!
      • 1...Kxc2
        • 2.Qd1#
      • 1...Kc4
        • 2.Qb5#
      • 1...Ke4
        • 2.Qf5#
      • 1...Bxg2
        • 2.Qe2#
      • 1...Be2
        • 2.Qxe2#
      • 1...Sbd1
        • 2.Qd5#
      • 1...Sa4
        • 2.Qd5#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sfd1
        • 2.Qd5#
      • 1...Sh1
        • 2.Qd5#
      • 1...Sh3
        • 2.Qd5#
      • 1...Se4
        • 2.Qd5#
      • 1...Sg4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(E),XB(a)
    • B(a);N_GUARD::QAB1(E)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(E)
      • Refutation
        • K(e);P_SPINS(b),S_FLIGHT,XS(C)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(e);P_SPINS(b),S_FLIGHT,XS(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);S_FLIGHT::B(F)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);S_FLIGHT::B(F)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • R(D);
    • Vars
      • K(e);P_SPINS(b),S_FLIGHT,XS(C)::QAB1(E)
      • K(e);S_FLIGHT::QAB1(E)
      • B(a);N_GUARD,XR(D)::QAB1(E)
      • B(a);N_GUARD::QAB1(E),XB(a)
      • S(b);::QAR2(E)
      • S(c);::QAR2(E)
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).