MESON Chess Problem Database

Problem Display
PID: 196843 (K1B4b/7r/2NP3p/pkP4P/p7/B3N3/4P1Q1/8 w - - 0 1)

Moller, Ferdinand Friedrich

Die Wochenschau, 1919

K1B4b/7r/2NP3p/pkP4P/p7/B3N3/4P1Q1/8

#2

10 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7+
      • 2.Sxa7#
    • 1...Rg7
      • 2.Sd4#
    • 1...Bd4
      • 2.Sxd4#
    • 1...Bg7
      • 2.Sa7#
  • Tries
    • 1.Sb8?
      • threat
        • 2.Ba6#
        • 2.Qc6#
      • 1...Rb7
        • 2.Qc6#
        • 2.Qxb7#
      • 1...Rc7
        • 2.Ba6#
      • 1...Ra7+!
    • 1.Bf5?
      • threat
        • 2.Bd3#
      • 1...Ka6
        • 2.Bd3#
      • 1...Ra7+!
    • 1.Be6?
      • threat
        • 2.Bc4#
      • 1...Ka6
        • 2.Bc4#
      • 1...Ra7+!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Sd4#
        • 2.Sa7#
      • 1...Kxc6
        • 2.Bd7#
      • 1...Rxg7
        • 2.Sd4#
      • 1...Bxg7
        • 2.Sa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(e);CHECK,N_GUARD::S(G),XR(e)
    • R(e);S_CUTB(f)::S(G)
    • B(f);N_GUARD::S(G),XB(f)
    • B(f);S_CUTR(e)::S(G)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::B(J)
      • Refutation
        • R(e);CHECK
    • Try
      • B(J);
      • Threat
        • B(J)
      • Vars
        • K(c);S_FLIGHT::B(J)
      • Refutation
        • R(e);CHECK
    • Try
      • B(J);
      • Threat
        • B(J)
      • Vars
        • K(c);S_FLIGHT::B(J)
      • Refutation
        • R(e);CHECK
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(G)::B(J)
      • R(e);XQ(B)::S(G)
      • B(f);XQ(B)::S(G)
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).