MESON Chess Problem Database

Problem Display
PID: 51158 (qb4NK/nP2rpR1/5N1P/1p1P1k1p/1P3p1r/5B1p/7P/4R1n1 w - - 0 1)

Clark, Cecil Henry Douglas

Manchester Guardian, 1951

qb4NK/nP2rpR1/5N1P/1p1P1k1p/1P3p1r/5B1p/7P/4R1n1

#2

11 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Be4#
  • Keys
    • 1.Sh7!
      • threat
        • 2.Sxe7#
        • 2.Rg5#
      • 1...Qxb7
        • 2.Rg5#
      • 1...Rxe1
        • 2.Rg5#
      • 1...Rxb7
        • 2.Rg5#
      • 1...Sxf3
        • 2.Sxe7#
      • 1...Re2
        • 2.Rg5#
      • 1...Re3
        • 2.Rg5#
      • 1...Re4
        • 2.Rg5#
      • 1...Se2
        • 2.Rg5#
      • 1...Rg4
        • 2.Sxe7#
      • 1...Re5
        • 2.Rg5#
      • 1...Re6
        • 2.Rg5#
      • 1...Rc7
        • 2.Rg5#
      • 1...Rd7
        • 2.Rg5#
      • 1...Re8
        • 2.Rg5#
      • 1...Be5
        • 2.Be4#
      • 1...Bd6
        • 2.Rg5#
      • 1...Bc7
        • 2.Rg5#
      • 1...Sc6
        • 2.Rg5#
      • 1...Sc8
        • 2.Rg5#
      • 1...f6
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 19
    • REMOVED MATES = 0
  • Sets
    • B(l);P_PINS(J),SBLOCK,S_CUTR(i)::B(C)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • Q(k);XP(H)::R1(I)
      • R(i);XR(A)::R1(I)
      • R(i);XP(H)::R1(I)
      • S(a);XB(C)::S(J),XR(i)
      • R(i);::R1(I)
      • S(a);::R1(I)
      • R(d);::S(J),XR(i)
      • R(i);P_PINS(J)::R1(I)
      • B(l);P_PINR(I),P_PINS(J),SBLOCK,S_CUTR(i)::B(C)
      • B(l);P_PINS(J)::R1(I)
      • S(h);::R1(I)
      • P(j);::S(J),XR(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).