MESON Chess Problem Database

Problem Display
PID: 287497 (2BK4/1P4p1/2bN4/2P3N1/3Qpk1P/1r6/3r3P/1nB1n3 w - - 0 1)

Ferreau, Wilhelm

Die Schwalbe, 1935

2BK4/1P4p1/2bN4/2P3N1/3Qpk1P/1r6/3r3P/1nB1n3

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Qxe4#
    • 1...Bb5
      • 2.Qxe4#
    • 1...Bd7
      • 2.Qxe4#
    • 1...Be8
      • 2.Qxe4#
    • 1...Sc3
      • 2.Bxd2#
    • 1...Sf3
      • 2.Sh3#
  • Tries
    • 1.Bxd2+?
      • 1...Re3
        • 2.Bxe3#
      • 1...Sxd2!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qd6#
      • 1...Bd7
        • 2.Qxe4#
      • 1...Rd3
        • 2.b8Q#
        • 2.b8B#
      • 1...Re3
        • 2.b8Q#
        • 2.b8B#
      • 1...Bd5
        • 2.Qe5#
      • 1...Sd3
        • 2.Qe3#
      • 1...Sf3
        • 2.Sh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(g);N_GUARD::QAR1(C),XP(e)
    • S(a);N_GUARD,S_CUTR(d)::B(A),XR(c)
    • S(b);SBLOCK,S_CUTR(d)::S(F)
  • Tries
    • Try
      • B(A);CHECK,XR(c)
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::B(A),XR(d)
      • Refutation
        • S(a);XB(A)
  • Actual
    • S(G);P_SPINQ(C)
    • Threat
      • QAB(C)
    • Vars
      • B(g);N_PINQ(C)::QAR1(C),XP(e)
      • R(d);N_GUARD::P=Q
      • R(d);N_GUARD,N_SPINR(c)::P=Q
      • B(g);N_PINQ(C)::QAB1(C)
      • S(b);N_PINQ(C)::QAB1(C)
      • S(b);SBLOCK,S_CUTR(d)::S(F)
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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).