MESON Chess Problem Database

Problem Display
PID: 53676 (B3R1b1/3N1Q2/6pB/2P5/3p1nr1/K1Pk2pq/1Pp4R/8 w - - 0 1)

Brehmer, Siegfried

Schach, 1950

B3R1b1/3N1Q2/6pB/2P5/3p1nr1/K1Pk2pq/1Pp4R/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Se5#
    • 1...Sg2
      • 2.Qf1#
    • 1...Sh5
      • 2.Se5#
      • 2.Rd2#
    • 1...Se6
      • 2.Se5#
  • Tries
    • 1.Re3+?
      • 1...dxe3
        • 2.Se5#
      • 1...Kxe3!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxd4#
      • 1...Kc4
        • 2.Qa6#
      • 1...dxc3
        • 2.Qxc3#
      • 1...Se2
        • 2.Se5#
      • 1...Sg2
        • 2.Qf1#
      • 1...Sd5
        • 2.Qa6#
      • 1...Sh5
        • 2.Se5#
      • 1...Se6
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(f);::S(G)
    • S(f);OGATE::QAB(H)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • P(e);SBLOCK,XR(J)::S(G)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(f),XR(J)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XP(e)
    • Vars
      • K(b);S_FLIGHT::QAB(H)
      • P(e);OGATE,XP(D)::QAR1(H),XP(e)
      • S(f);::S(G)
      • S(f);OGATE::QAB(H)
      • S(f);S_CUTB(i)::QAB(H)
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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).