MESON Chess Problem Database

Problem Display
PID: 87434 (7B/5b2/R2N2p1/1RPkn3/1p5r/1Pp4B/K1n2NPb/7Q w - - 0 1)

Becker, Christopher Bennett

The Problemist, 1974

7B/5b2/R2N2p1/1RPkn3/1p5r/1Pp4B/K1n2NPb/7Q

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • threat
        • 2.Rd6#
      • 1...Sd3
        • 2.Se7#
        • 2.g4#
      • 1...Sf3
        • 2.Se7#
      • 1...Sc4
        • 2.Se7#
        • 2.g4#
      • 1...Sg4
        • 2.Se7#
        • 2.g3#
      • 1...Sd7
        • 2.Se7#
        • 2.g4#
      • 1...Sc6!
    • 1.Sc8?
      • threat
        • 2.Rd6#
      • 1...Sc6
        • 2.Sb6#
      • 1...Sd3
        • 2.Se7#
        • 2.g4#
      • 1...Sf3
        • 2.Se7#
        • 2.c6#
      • 1...Sc4
        • 2.Se7#
        • 2.g4#
        • 2.c6#
      • 1...Sg4
        • 2.Se7#
        • 2.g3#
      • 1...Sd7
        • 2.Se7#
        • 2.g4#
      • 1...Kd4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Rd6#
      • 1...Kd4
        • 2.Qd1#
      • 1...Sxc4
        • 2.g4#
      • 1...Sd3
        • 2.g4#
      • 1...Sf3
        • 2.c6#
      • 1...Sg4
        • 2.g3#
      • 1...Sc6
        • 2.Sb6#
      • 1...Sd7
        • 2.g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(J);
      • Threat
        • R1(I)
      • Vars
        • S(g);::S(J)
      • Refutation
        • S(g);
    • Try
      • S(J);
      • Threat
        • R1(I)
      • Vars
        • S(g);SBLOCK::S(J)
      • Refutation
        • K(f);P-FLIGHT,P_PINP(E),P_SPINS(g)
  • Actual
    • S(J);
    • Threat
      • R1(I)
    • Vars
      • K(f);P-FLIGHT,P_SPINS(g)::QAR(A)
      • S(g);N_GUARD,XS(J)::QAB(A)+P(D)
      • S(g);N_GUARD::QAB(A)+P(D)
      • S(g);::R(G)+P(H)
      • S(g);N_GUARD,S_CUTR(e)::QAB(A)+P(D)
      • S(g);SBLOCK::S(J)
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).