MESON Chess Problem Database

Problem Display
PID: 107730 (4Q3/4p3/2Bp3N/3br3/1K1k4/8/2P1R3/5N2 w - - 0 1)

Benoit, Marc

Allen MT, 1952

4Q3/4p3/2Bp3N/3br3/1K1k4/8/2P1R3/5N2

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Sxf5#
    • 1...Re6
      • 2.Sf5#
    • 1...Bh1
      • 2.Rd2#
    • 1...Ba2
      • 2.Rd2#
    • 1...Bg2
      • 2.Rd2#
    • 1...Bb3
      • 2.Rd2#
    • 1...Bf3
      • 2.Rd2#
    • 1...Be6
      • 2.Rd2#
    • 1...Bf7
      • 2.Rd2#
    • 1...Bg8
      • 2.Rd2#
  • Keys
    • 1.Qf7!
      • 1...Rxe2
        • 2.Qxd5#
      • 1...Bxc6
        • 2.Qc4#
      • 1...Bxf7
        • 2.Rd2#
      • 1...Re3
        • 2.Qxd5#
      • 1...Re4
        • 2.Qxd5#
      • 1...Rf5
        • 2.Sxf5#
      • 1...Rg5
        • 2.Qf2#
      • 1...Rh5
        • 2.Qf2#
      • 1...Re6
        • 2.Sf5#
      • 1...Bh1
        • 2.Rd2#
        • 2.Qc4#
      • 1...Ba2
        • 2.Rd2#
      • 1...Bg2
        • 2.Rd2#
        • 2.Qc4#
      • 1...Bb3
        • 2.Rd2#
      • 1...Bf3
        • 2.Rd2#
        • 2.Qc4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Be4
        • 2.Qc4#
        • 2.Qf2#
      • 1...Be6
        • 2.Rd2#
      • 1...e6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::S(F),XR(c)
    • R(c);N_GUARD::S(F)
    • B(b);::R(C)
  • Actual
    • Q(G);
    • Vars
      • R(c);N_GUARD,XR(C)::QAR1(G),XB(b)
      • B(b);OGATE,XB(E)::QAR1(G)
      • B(b);XQ(G)::R(C)
      • R(c);N_GUARD::QAR1(G),XB(b)
      • R(c);N_GUARD::S(F),XR(c)
      • R(c);N_GUARD::QAB(G)
      • R(c);N_GUARD::S(F)
      • B(b);::R(C)
      • B(b);OGATE::QAR1(G),XB(b)
      • P(e);OGATE::QAB(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).