MESON Chess Problem Database

Problem Display
PID: 6557 (1nrn4/bp4p1/b1k5/8/N2pK1B1/3p3Q/7B/1R6 w - - 0 1)

Mansfield, Comins

1st HM., Skakbladet, 1931

1nrn4/bp4p1/b1k5/8/N2pK1B1/3p3Q/7B/1R6

#2

6 + 10

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Rxb6#
    • 1...Sd7
      • 2.Bxd7#
  • Tries
    • 1.Be6?
      • threat
        • 2.Bd5#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Bc4!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Qxc8#
      • 1...Se6
        • 2.Qxe6#
      • 1...b5
        • 2.Kxd3#
      • 1...b6
        • 2.Kxd4#
      • 1...Rc7
        • 2.Ke5#
      • 1...Bb6
        • 2.Rxb6#
      • 1...Sd7
        • 2.Kf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD::R1(A),XB(e)
    • S(h);N_GUARD::B(F),XS(h)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(F)
      • Vars
        • S(j);OGATE,XB(F)::QAR2(C),XS(j)
      • Refutation
        • B(c);
  • Actual
    • B(F);
    • Threat
      • QAR2(C),XR(i)
    • Vars
      • S(j);N_GUARD::QAR2(C),XS(j)
      • P(f);::B(F)+K(E),XP(a)
      • P(f);::B(F)+K(E),XP(b)
      • R(i);SBLOCK::B(F)+K(E)
      • B(e);N_GUARD::R1(A),XB(e)
      • S(h);SBLOCK::B(F)+K(E)
HTML5 logo

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).