MESON Chess Problem Database

Problem Display
PID: 135642 (8/8/4B2p/1R5p/2K4k/3Qb2P/6nP/8 w - - 0 1)

Youness, Benjelloun

StrateGems, 2010

8/8/4B2p/1R5p/2K4k/3Qb2P/6nP/8

#2

6 + 5

4901 Best Problems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qg3#
    • 1...Bg1
      • 2.Qg3#
      • 2.Qd8#
    • 1...Bd2
      • 2.Qg3#
    • 1...Bf2
      • 2.Qd8#
    • 1...Bd4
      • 2.Qg3#
    • 1...Bc5
      • 2.Qg3#
    • 1...Bg5
      • 2.Qg3#
    • 1...Bb6
      • 2.Qg3#
    • 1...Ba7
      • 2.Qg3#
      • 2.Qd8#
    • 1...Sf4
      • 2.Qd8#
  • Tries
    • 1.Qg6?
      • threat
        • 2.Rxh5#
        • 2.Qxh5#
        • 2.Qg3#
      • 1...Bf4
        • 2.Rxh5#
        • 2.Qxh5#
      • 1...Bf2
        • 2.Rxh5#
        • 2.Qxh5#
        • 2.Qf6#
      • 1...Bc5
        • 2.Qg3#
        • 2.Qf6#
      • 1...Sf4
        • 2.Qg3#
        • 2.Qf6#
      • 1...Bg5!
    • 1.Qd6?
      • threat
        • 2.Qg3#
      • 1...Bf2
        • 2.Qe7#
        • 2.Qd8#
      • 1...Sf4
        • 2.Qe7#
        • 2.Qd8#
      • 1...Bf4!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxh5#
      • 1...Bc5
        • 2.Qf6#
      • 1...Bg5
        • 2.Qf2#
      • 1...Sf4
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • B(b);OGATE::QAB1(B)
    • B(b);N_GUARD::QAB(B)
    • S(a);S_CUTB(b)::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Refutation
        • B(b);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • B(b);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(d)
    • Vars
      • B(b);N_GUARD::QAB(B)
      • S(a);S_CUTB(b)::QAB(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).