MESON Chess Problem Database

Problem Display
PID: 195011 (1r5b/1b6/5P2/2R1NNR1/Q1P1k2q/2K1Pp2/3r3p/5B2 w - - 0 1)

Beach, Lennox F

Pittsburgh Gazette-Times, 1918

1r5b/1b6/5P2/2R1NNR1/Q1P1k2q/2K1Pp2/3r3p/5B2

#2

10 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bd3#
    • 1...Rb2
      • 2.Bd3#
    • 1...Rc2+
      • 2.Qxc2#
    • 1...Rf2
      • 2.Bd3#
    • 1...Rg2
      • 2.Bd3#
    • 1...Rd3+
      • 2.Bxd3#
    • 1...f2
      • 2.Bg2#
  • Tries
    • 1.Qc2+?
      • 1...Rd3+
        • 2.Bxd3#
        • 2.Qxd3#
      • 1...Rxc2+!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Re5#
      • 1...Rc2+
        • 2.Qxc2#
      • 1...Rd3+
        • 2.Bxd3#
      • 1...Bxf6+
        • 2.Sxf6#
      • 1...Qxg4
        • 2.Rxg4#
      • 1...f2
        • 2.Bg2#
      • 1...Qg3
        • 2.Sxg3#
      • 1...Rd5
        • 2.cxd5#
      • 1...Re8
        • 2.Qxe8#
      • 1...Bd5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::B(A)
    • R(a);CHECK,N_GUARD::QAB(D),XR(a)
    • R(a);CHECK,N_GUARD::B(A),XR(a)
    • P(c);OGATEB::B(A)
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • R(a);CHECK,XQ(D)
  • Actual
    • S(G);P_SPINP(J)
    • Threat
      • R1(F)
    • Vars
      • R(a);CHECK,N_GUARD::QAB(D),XR(a)
      • R(a);CHECK,N_GUARD::B(A),XR(a)
      • B(h);CHECK,XP(J)::S(G),XB(h)
      • Q(e);OGATE,XS(G)::R(I),XQ(e)
      • P(c);OGATEB::B(A)
      • Q(e);N_GUARD::S(H),XQ(e)
      • R(a);OGATE::QAR(D)+P(E),XR(a)
      • R(g);N_GUARD::QAR(D),XR(g)
      • B(f);S_CUTR(a)::S(H)
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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).