MESON Chess Problem Database

Problem Display
PID: 49369 (Q7/5Rr1/3p2p1/1N1P1n1N/2pPkP2/6bR/1n2BPP1/Bb5K w - - 0 1)

Strerath, Otto

1st Prize, Problemisten, 1948/II

Q7/5Rr1/3p2p1/1N1P1n1N/2pPkP2/6bR/1n2BPP1/Bb5K

#2

13 + 9

461 Schach-Express 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Bf3#
    • 1...Bxf4
      • 2.Sf6#
    • 1...Sd3
      • 2.Bf3#
    • 1...Se3
      • 2.Sxg3#
      • 2.f3#
    • 1...Sxd4
      • 2.Sc3#
      • 2.Sxd6#
      • 2.Sxg3#
    • 1...Sh4
      • 2.Sxg3#
    • 1...Sh6
      • 2.Sxg3#
    • 1...Se7
      • 2.Sxg3#
  • Tries
    • 1.Qe8+?
      • 1...Kxd5
        • 2.Sf6#
      • 1...Se7!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.Sf6#
      • 1...Bxf4
        • 2.Sf6#
      • 1...Sxd4
        • 2.Sc3#
      • 1...gxh5
        • 2.Qxf5#
      • 1...Sd3
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);SBLOCK::B(C)
    • B(c);SBLOCK,XP(H)::S(K)
    • S(b);SBLOCK::B(C)
    • S(f);N_GUARD::S(K),XB(c)
  • Tries
    • Try
      • Q(M);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(J)::S(K)
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • Q(M);
    • Threat
      • QAR2(M)
    • Vars
      • K(e);S_FLIGHT,XP(J)::S(K)
      • B(c);SBLOCK,XP(H)::S(K)
      • S(f);SBLOCK,XP(G)::S(I)
      • P(h);N_GUARD,XS(K)::QAB1(M),XS(f)
      • S(b);SBLOCK::B(C)
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).