MESON Chess Problem Database

Problem Display
PID: 154083 (2n2B2/8/1bN1Rp2/2pk1P2/1P1n1p2/2K2P2/b3B3/3R4 w - - 0 1)

Grillon, J-M

diagrammes, 1974

2n2B2/8/1bN1Rp2/2pk1P2/1P1n1p2/2K2P2/b3B3/3R4

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Bc4#
    • 1...Bc4
      • 2.Bxc4#
    • 1...Sd6
      • 2.Se7#
      • 2.Rxd6#
    • 1...Sa7
      • 2.Se7#
      • 2.Rd6#
    • 1...Se7
      • 2.Sxe7#
    • 1...cxb4+
      • 2.Sxb4#
  • Tries
    • 1.Bxc5?
      • threat
        • 2.Rxd4#
      • 1...Sd6
        • 2.Se7#
        • 2.Rxd6#
      • 1...Bxc5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Be4#
      • 1...Se2+
        • 2.Bxe2#
      • 1...Sb5+
        • 2.Bxb5#
      • 1...cxb4+
        • 2.Sxb4#
      • 1...Sxf5
        • 2.Bc4#
        • 2.Bxf5#
      • 1...Sd6
        • 2.Se7#
        • 2.Rxd6#
      • 1...Bb1
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::B(B)
    • B(a);N_GUARD::B(B),XB(a)
    • S(h);N_GUARD::S(G),XS(h)
    • P(d);CHECK,XP(E)::S(G),XP(d)
  • Tries
    • Try
      • B(I);XP(d)
      • Threat
        • R1(A),XS(b)
      • Refutation
        • B(f);XB(I)
  • Actual
    • B(B);N_PINS(b)
    • Threat
      • B(B)
    • Vars
      • S(b);CHECK,OGATEB::R(A)+B(B),XS(b)
      • P(d);CHECK,XP(E)::S(G),XP(d)
      • B(a);N_GUARD::B(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).