MESON Chess Problem Database

Problem Display
PID: 273940 (BBQ1N1n1/3p2r1/R5r1/R1N1PkpP/6p1/6K1/2b5/4n3 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2023

BBQ1N1n1/3p2r1/R5r1/R1N1PkpP/6p1/6K1/2b5/4n3

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa6
      • 2.Sxg7#
    • 1...Rb6
      • 2.Sxg7#
    • 1...Rc6
      • 2.Sxg7#
    • 1...Re6
      • 2.Sxg7#
    • 1...Rf6
      • 2.Sxg7#
    • 1...Rh6
      • 2.Sxg7#
    • 1...Bd1
      • 2.Be4#
    • 1...Bb3
      • 2.Be4#
    • 1...Ba4
      • 2.Be4#
    • 1...Be4
      • 2.Bxe4#
    • 1...Sd3
      • 2.Be4#
  • Tries
    • 1.Re6?
      • threat
        • 2.Sd6#
      • 1...Rxe6
        • 2.Sxg7#
      • 1...d6
        • 2.Sxd6#
      • 1...dxe6!
    • 1.Rf6+?
      • 1...Rxf6
        • 2.Sxg7#
      • 1...Sxf6!
    • 1.Qxd7+?
      • 1...Re6
        • 2.Sxg7#
        • 2.Qxe6#
      • 1...Rxd7!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sd4#
      • 1...Rxe6
        • 2.Sxg7#
      • 1...dxe6
        • 2.Sd6#
      • 1...d5
        • 2.exd5 ep#
      • 1...Sf3
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(f);N_GUARD,XR(F)::S(J),XR(h)
    • R(f);N_GUARD::S(J),XR(h)
    • R(f);N_GUARD,N_SPINP(g)::S(J),XR(h)
    • B(b);N_GUARD::B(G)
    • B(b);N_GUARD::B(G),XB(b)
    • S(a);S_CUTB(b)::B(G)
  • Tries
    • Try
      • R(F);N_PINP(g)
      • Threat
        • S(J)
      • Vars
        • R(f);N_GUARD,XR(F)::S(J),XR(h)
        • P(g);::S(J),XP(g)
      • Refutation
        • P(g);P_SPINP(g),XR(F)
    • Try
      • R(F);CHECK
      • Vars
        • R(f);XR(F)::S(J),XR(h)
      • Refutation
        • S(i);XR(F)
    • Try
      • Q(I);CHECK,XP(g)
      • Refutation
        • R(h);XQ(I)
  • Actual
    • S(C);N_PINP(g)
    • Threat
      • S(C)
    • Vars
      • R(f);N_GUARD,XS(C)::S(J),XR(h)
      • P(g);P_SPINP(g),XS(C)::S(J)
      • P(g);OGATE::R(B)+P(D),XP(g),EP
      • S(a);N_GUARD::QAB(I),XB(b)
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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).