MESON Chess Problem Database

Problem Display
PID: 32398 (b1Nr4/bn1P4/Rq3kPB/p4N1P/6B1/5r2/2n2Qp1/4R1K1 w - - 0 1)

Wostijn, A

De Problemist, 1928

b1Nr4/bn1P4/Rq3kPB/p4N1P/6B1/5r2/2n2Qp1/4R1K1

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Rexe6#
      • 2.Raxe6#
    • 1...Rg3
      • 2.Sxg3#
    • 1...Rh3
      • 2.Sg3#
    • 1...Re8
      • 2.dxe8S#
    • 1...Sa1
      • 2.Qd4#
    • 1...Sa3
      • 2.Qd4#
    • 1...Sb4
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
      • 2.Qh4#
    • 1...Sc5
      • 2.Qh4#
  • Tries
    • 1.Rxb6+?
      • 1...Sd6
        • 2.Rxd6#
        • 2.Qh4#
      • 1...Bxb6!
  • Keys
    • 1.Sfe7!
      • threat
        • 2.Sd5#
      • 1...Rxd7
        • 2.Sg8#
      • 1...Sxe1
        • 2.Qd4#
      • 1...Se3
        • 2.Qb2#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sc5
        • 2.Qh4#
      • 1...Sd6
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(c);::QAR(C)+S(E),XR(c)
    • R(c);::QAR(C)+S(E)
    • R(j);OGATE::PXR(j)=S
    • S(a);N_GUARD::QAB(C)
    • S(h);N_PINQ(C)::QAB(C)
  • Tries
    • Try
      • R(G);CHECK,N_SPINQ(C),XQ(e)
      • Refutation
        • B(g);P_PINQ(C),XR(G)
  • Actual
    • S(E);P_PINR(c)
    • Threat
      • S(E)
    • Vars
      • R(j);N_GUARD,XP(J)::S(E)
      • S(a);N_GUARD,XR(A)::QAB(C)
      • S(a);N_PINQ(C)::QAB(C)
      • S(a);N_GUARD::QAB(C)
      • S(h);N_PINQ(C)::QAB(C)
      • S(h);N_SPINQ(e),S_CUTQ(e)::R1(A)
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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).