Problem Display
PID: 9820 (8/1n2Kp2/5P2/1QP2Np1/4kp1b/5N2/2R5/7B w - - 0 1)

Kipping, Cyril Stanley

Nottinghamshire Guardian, 1910

8/1n2Kp2/5P2/1QP2Np1/4kp1b/5N2/2R5/7B

#2

8 + 6


4792 300 Chess Problems 1916

SOLUTION


  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxb7#
  • Tries
    • 1.S3d4+?
      • 1...Ke5
        • 2.Re2#
        • 2.Qe2#
      • 1...f3!
    • 1.S3xh4+?
      • 1...Ke5
        • 2.Re2#
        • 2.Qe2#
        • 2.Qb2#
      • 1...f3!
    • 1.Sd6+?
      • 1...Ke3
        • 2.Re2#
        • 2.Qe2#
        • 2.Qb3#
      • 1...Kd5
        • 2.Rd2#
        • 2.Qxb7#
      • 1...Sxd6!
    • 1.Re2+?
      • 1...Kd5
        • 2.Re5#
      • 1...Kxf5!
    • 1.Qb4+?
      • 1...Kd3
        • 2.Rd2#
        • 2.Qc4#
      • 1...Kd5
        • 2.Qxb7#
      • 1...Kxf5!
    • 1.c6?
      • threat
        • 2.Sd2#
        • 2.Sxg5#
        • 2.Re2#
      • 1...Bf2
        • 2.Sd2#
        • 2.Sxg5#
      • 1...g4
        • 2.Sd2#
        • 2.Sg5#
        • 2.Re2#
      • 1...Sc5!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Rd2#
      • 1...Kd3
        • 2.Se5#
      • 1...Kd5
        • 2.Qxb7#
      • 1...Kxf5
        • 2.Rg2#
      • 1...Sxc5
        • 2.Rxc5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(D),XS(e)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • S(C);CHECK,XB(c)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • S(F);CHECK
      • Refutation
        • S(e);XS(F)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::R1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(D),XS(e)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • P(E);
      • Threat
        • DUALS(3)
      • Refutation
        • S(e);
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+R(B)
    • Vars
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT::QAB(D),XS(e)
      • K(a);S_FLIGHT,XS(F)::QAB(D)+R(B)
      • S(e);OGATE,XP(E)::QAB(D)+R(B),XS(e)


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).