Problem Display
PID: 4720 (8/5Q2/4pp2/2P1p3/4k1p1/4NNB1/2R5/1B1K4 w - - 0 1)

Winter-Wood, Edward John

2nd Prize, Sheffield Independent, 1888

8/5Q2/4pp2/2P1p3/4k1p1/4NNB1/2R5/1B1K4

#2

8 + 5


15 British Chess Magazine 1889
3528 Bristol Times and Mirror 1900
845 Devon and Exeter Gazette 1900
15254 EJWW Scrapbook 2011
14868 Pirnie Collection 2018

SOLUTION


  • SOUND
  • Sets
    • 1...Kxe3
      • 2.Rc3#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qb7#
      • 1...gxf3
        • 2.Rc4#
      • 1...Kxf3!
    • 1.Sf1?
      • 1...Kd3
        • 2.Rc1#
      • 1...Kxf3
        • 2.Rf2#
      • 1...Kd5
        • 2.Qb7#
      • 1...Kf5
        • 2.Qh7#
      • 1...gxf3
        • 2.Rd2#
      • 1...f5!
    • 1.Rc1+?
      • 1...Kxe3
        • 2.Rc3#
      • 1...Kxf3!
    • 1.Ra2+?
      • 1...Kxe3
        • 2.Ra3#
      • 1...Kxf3!
    • 1.Rb2+?
      • 1...Kxe3
        • 2.Rb3#
      • 1...Kxf3!
    • 1.Rc4+?
      • 1...Kxe3
        • 2.Rc3#
      • 1...Kxf3!
    • 1.Qb7+?
      • 1...Kxe3
        • 2.Re2#
        • 2.Rc3#
      • 1...Kd3!
  • Keys
    • 1.Sf5!
      • 1...Kd3
        • 2.Rc1#
      • 1...Kxf3
        • 2.Rf2#
      • 1...Kd5
        • 2.Qb7#
      • 1...Kxf5
        • 2.Qh7#
      • 1...gxf3
        • 2.Rd2#
      • 1...exf5
        • 2.Rc3#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,XS(D)::R(C)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB(H)
      • Vars
        • P(b);SBLOCK,XS(E)::B(A)+R(C),DCHECK
      • Refutation
        • K(a);P_SPINP(e),S_FLIGHT,XS(E)
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::B(A)+R(C)
        • K(a);P_SPINP(e),S_FLIGHT,XS(E)::R1(C)
        • K(a);P_SPINP(d),S_FLIGHT::QAB(H)
        • K(a);P_SPINP(e),S_FLIGHT::QAB(H)
        • P(b);SBLOCK,XS(E)::B(A)+R(C)
      • Refutation
        • P(e);
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::R(C)
      • Refutation
        • K(a);P_SPINP(e),S_FLIGHT,XS(E)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::R(C)
      • Refutation
        • K(a);P_SPINP(e),S_FLIGHT,XS(E)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::R(C)
      • Refutation
        • K(a);P_SPINP(e),S_FLIGHT,XS(E)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::R(C)
      • Refutation
        • K(a);P_SPINP(e),S_FLIGHT,XS(E)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::B(A)+R(C)
      • K(a);S_FLIGHT,XS(E)::R1(C)
      • K(a);P_SPINP(d),S_FLIGHT::QAB(H)
      • K(a);OGATEB,P_SPINP(e),S_FLIGHT,XS(D)::QAB(H)
      • P(b);SBLOCK,XS(E)::B(A)+R(C)
      • P(d);SBLOCK,XS(D)::B(A)+R(C)


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).