MESON Chess Problem Database

Problem Display
PID: 258003 (1B1QbN2/rp2p2q/2k2rp1/2p5/7p/3B1N2/8/b6K w - - 0 1)

Howard, Kenneth Samuel

British Chess Magazine, 1934

1B1QbN2/rp2p2q/2k2rp1/2p5/7p/3B1N2/8/b6K

#2

6 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Sxe5#
    • 1...b5
      • 2.Be4#
    • 1...e6
      • 2.Qd6#
  • Tries
    • 1.Qd7+?
      • 1...Kb6
        • 2.Bc7#
        • 2.Qc7#
      • 1...Bxd7!
    • 1.Qc8+?
      • 1...Kb6
        • 2.Qc7#
      • 1...Kd5!
    • 1.Qxe8+?
      • 1...Kb6
        • 2.Qb5#
      • 1...Kd5!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Qc7#
      • 1...b5
        • 2.Bd5#
      • 1...b6
        • 2.Qd5#
      • 1...Be5
        • 2.Sxe5#
      • 1...e5
        • 2.Qxf6#
      • 1...e6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(C),XB(a)
    • P(h);SBLOCK::B(B)
    • P(i);N_GUARD,S_CUTR(e)::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • B(k);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT::QAB1(E)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(E);CHECK,XB(k)
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • B(B);
    • Threat
      • QAR1(E)
    • Vars
      • P(h);SBLOCK::B(B)
      • P(h);SBLOCK::QAB1(E)
      • B(a);N_GUARD::S(C),XB(a)
      • P(i);OGATE::QAR(E),XR(e)
      • P(i);N_GUARD,S_CUTR(e)::QAR1(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).