MESON Chess Problem Database

Problem Display
PID: 100844 (2b2QK1/5BN1/nr4R1/1r5p/1b1p1k1P/3PRN2/5B2/2n5 w - - 0 1)

Beach, Lennox F

Good Companions, 1919

2b2QK1/5BN1/nr4R1/1r5p/1b1p1k1P/3PRN2/5B2/2n5

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Sxh5#
    • 1...Sc5
      • 2.Be6#
  • Tries
    • 1.Sxh5+?
      • 1...Kf5
        • 2.Sxd4#
        • 2.Rg5#
      • 1...Rxh5!
    • 1.Be6+?
      • 1...Rf5
        • 2.Sxh5#
        • 2.Qxf5#
      • 1...Bxf8!
  • Keys
    • 1.Sg1!
      • threat
        • 2.Re4#
      • 1...Sxd3
        • 2.Se2#
      • 1...dxe3
        • 2.Bg3#
      • 1...Re5
        • 2.Rf3#
      • 1...Re6
        • 2.Sh3#
      • 1...Bf5
        • 2.Sxh5#
      • 1...Bb7
        • 2.Sh3#
      • 1...Sc5
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(i);SBLOCK,S_CUTR(e)::S(H),XP(f)
    • S(g);S_CUTB(b),S_CUTR(e)::QAR(I)+B(G)
  • Tries
    • Try
      • S(H);CHECK,XP(f)
      • Refutation
        • R(e);XS(H)
    • Try
      • B(G);CHECK
      • Refutation
        • B(b);XQ(I)
  • Actual
    • S(D);
    • Threat
      • R1(C)
    • Vars
      • S(a);N_GUARD,XP(B)::S(D)
      • P(c);SBLOCK,XR(C)::B(A)
      • R(e);SBLOCK::R1(C)
      • R(h);S_CUTB(i)::S(D)
      • B(i);SBLOCK,S_CUTR(e)::S(H),XP(f)
      • B(i);N_GUARD::S(D)
      • S(g);S_CUTB(b),S_CUTR(e)::QAR(I)+B(G)
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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).