MESON Chess Problem Database

Problem Display
PID: 196742 (N2rb2K/pnpn1p2/8/pk6/2R5/Bp4pQ/7b/5B1r w - - 0 1)

Sparke, Arthur M

2nd HM., Hampshire Telegraph and Post, 1919

N2rb2K/pnpn1p2/8/pk6/2R5/Bp4pQ/7b/5B1r

#2

6 + 13

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Rc6#
    • 1...Sb6
      • 2.Sxc7#
    • 1...a4
      • 2.Rc5#
  • Tries
    • 1.Rd4+?
      • 1...Kc6
        • 2.Qg2#
      • 1...Rxf1!
    • 1.Rf4+?
      • 1...Kc6
        • 2.Qg2#
      • 1...Rxf1!
    • 1.Rg4+?
      • 1...Kc6
        • 2.Qg2#
      • 1...Rxf1!
    • 1.Rh4+?
      • 1...Kc6
        • 2.Qg2#
      • 1...Rxf1!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qc6#
      • 1...Bg1+
        • 2.Rh4#
      • 1...Ka6
        • 2.Rc6#
      • 1...a4
        • 2.Rc5#
      • 1...Sbc5
        • 2.Rb4#
      • 1...Sdc5
        • 2.Rb4#
      • 1...Se5
        • 2.Qxb7#
      • 1...Sb6
        • 2.Sxc7#
      • 1...Sf6
        • 2.Qxb7#
      • 1...Sb8
        • 2.Qxb7#
      • 1...Sf8
        • 2.Qxb7#
      • 1...c5
        • 2.Rb4#
      • 1...c6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(f);S_FLIGHT::B(A)+R(D),DCHECK
    • S(j);SBLOCK::S(E),XP(i)
    • P(e);SBLOCK::B(A)+R(D),DCHECK
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(C)
      • Refutation
        • R(a);XB(A)
    • Try
      • R(D);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(C)
      • Refutation
        • R(a);XB(A)
    • Try
      • R(D);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(C)
      • Refutation
        • R(a);XB(A)
    • Try
      • R(D);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(C)
      • Refutation
        • R(a);XB(A)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • B(b);CHECK,S_CUTR(a)::B(A)+R(D)
      • K(f);S_FLIGHT::B(A)+R(D),DCHECK
      • P(e);SBLOCK::B(A)+R(D),DCHECK
      • S(h);SBLOCK::B(A)+R(D),DCHECK
      • S(j);SBLOCK::B(A)+R(D),DCHECK
      • S(j);N_GUARD::QAR2(C),XS(h)
      • S(j);SBLOCK::S(E),XP(i)
      • P(i);SBLOCK::B(A)+R(D),DCHECK
      • P(i);::QAB1(C),XP(i)
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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).