MESON Chess Problem Database

Problem Display
PID: 192950 (4B2k/2B1N2p/p2p3P/rR2n1NK/8/p7/1r2p3/Q7 w - - 0 1)

Coello Alonso, Jose Antonio

Uris, Miguel

BCPS Website, 2019

4B2k/2B1N2p/p2p3P/rR2n1NK/8/p7/1r2p3/Q7

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sf7#
    • 1...Ra2
      • 2.Sf7#
    • 1...Rc2
      • 2.Sf7#
    • 1...Rd2
      • 2.Sf7#
    • 1...Rb3
      • 2.Sf7#
    • 1...Rb4
      • 2.Sf7#
    • 1...Rbxb5
      • 2.Sf7#
    • 1...Sd3
      • 2.Sf7#
    • 1...Sf3
      • 2.Sf7#
    • 1...Sc4
      • 2.Sf7#
    • 1...Sg4
      • 2.Sf7#
    • 1...Sc6
      • 2.Sf7#
    • 1...Sg6
      • 2.Sf7#
    • 1...Sd7
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
    • 1...d5
      • 2.Bxe5#
  • Keys
    • 1.Rb8!
      • threat
        • 2.Bb5#
      • 1...Rxb8
        • 2.Sf7#
      • 1...Rbb5
        • 2.Sf7#
        • 2.Bxb5#
      • 1...Rb6
        • 2.Sf7#
      • 1...Rb7
        • 2.Sf7#
      • 1...Rab5
        • 2.Bxb5#
      • 1...Sc6
        • 2.Bxc6#
      • 1...Sg6
        • 2.Bxg6#
      • 1...Sd7
        • 2.Bxd7#
      • 1...Sf7
        • 2.Bxf7#

This is a version of 192949

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • R(a);P_SPINS(e)::S(C)
    • R(a);P_SPINS(e),XR(B)::S(C)
    • S(e);N_GUARD,P_SPINR(a)::S(C)
    • S(e);N_GUARD,P_SPINR(a)::S(C),XS(e)
    • P(g);OGATE::B(F),XS(e)
  • Actual
    • R(B);
    • Threat
      • R(B)+B(H)
    • Vars
      • R(a);P_SPINS(e),XR(B)::S(C)
      • R(a);P_SPINS(e)::S(C)
      • R(d);::R(B)+B(H),XR(d)
      • S(e);P_PINS(C),P_SPINR(a)::R(B)+B(H),XS(e)
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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).