MESON Chess Problem Database

Problem Display
PID: 230780 (8/8/3KB3/8/n2k4/8/2Q5/1N3b2 w - - 0 1)

Ritchings, Laurie

The Problemist, 1988

8/8/3KB3/8/n2k4/8/2Q5/1N3b2

#2

4 + 3

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qe4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Bg2
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sc5
        • 2.Qc3#
        • 2.Qxc5#
      • 1...Ke3!
    • 1.Qf2+?
      • 1...Ke4
        • 2.Bf5#
      • 1...Kd3!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qe4#
      • 1...Ke3
        • 2.Qd2#
      • 1...Bg2
        • 2.Qd2#
      • 1...Bd3
        • 2.Qf2#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc5
        • 2.Qc3#

Anticipated by 11928(1973)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(B)
      • Vars
        • S(b);N_GUARD::QAB1(B),XS(b)
        • B(a);N_GUARD::QAR1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::B(D)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(D);
    • Threat
      • QAR1(B)
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • B(a);N_GUARD::QAR2(B)
      • B(a);SBLOCK::QAB(B)
      • S(b);N_GUARD::QAB1(B),XS(b)
      • S(b);N_GUARD::QAB1(B)
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).