MESON Chess Problem Database

Problem Display
PID: 54493 (8/1QBn1p1p/5P1q/2pP1Nn1/3bk1P1/r1RR2pp/P1pP4/2Kb1Br1 w - - 0 1)

Shire, David J

2nd Prize, Probleemblad, 2003

8/1QBn1p1p/5P1q/2pP1Nn1/3bk1P1/r1RR2pp/P1pP4/2Kb1Br1

#2

12 + 14

102 Probleemblad 2007
56 The Problemist 2007
23 Die Schwalbe 2011
56 The Problemist 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf1
      • 2.Sxg3#
    • 1...Rh1
      • 2.Sxg3#
    • 1...Bxc3
      • 2.Re3#
    • 1...Be3
      • 2.Rxe3#
    • 1...Bxf6
      • 2.Re3#
    • 1...Se6
      • 2.dxe6#
    • 1...g2
      • 2.Sg3#
    • 1...c4
      • 2.Rxd4#
  • Keys
    • 1.Rf3!
      • threat
        • 2.Rf4#
      • 1...Rxf1
        • 2.Sxg3#
      • 1...Bxf3
        • 2.d3#
      • 1...Sxf3
        • 2.Bd3#
      • 1...Be3
        • 2.Rfxe3#
      • 1...Be5
        • 2.d6#
      • 1...Se6
        • 2.dxe6#
      • 1...Se5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,XB(B)::S(I),XP(e)
    • R(b);N_GUARD::S(I),XP(e)
    • B(g);N_GUARD,XR(E)::R1(F)
    • B(g);N_GUARD,P_PINP(D)::R1(F),XB(g)
    • B(g);N_GUARD,XP(J)::R1(F)
    • S(j);OGATE,P_PINP(D)::QAB(K)+P(H),XS(j)
    • P(e);S_CUTR(b)::S(I)
    • P(i);N_GUARD::R1(F),XB(g)
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • R(b);N_GUARD,XB(B)::S(I),XP(e)
      • B(a);P_PINB(B),SBLOCK,XR(F)::P(D)
      • S(j);P_PINP(D),SBLOCK,XR(F)::B(B)
      • B(g);N_GUARD,P_PINP(D)::R1(F),XB(g)
      • B(g);SBLOCK::QAB(K)+P(H)
      • S(j);OGATE,P_PINP(D)::QAB(K)+P(H),XS(j)
      • S(l);SBLOCK::S(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).