MESON Chess Problem Database

Problem Display
PID: 276168 (5R2/1kN1B1Rb/1P2pp2/1PP2B1p/2p1qn2/K2pQ2p/P6b/4r1r1 w - - 0 1)

Buchner, R?

Die Schwalbe, 1933

5R2/1kN1B1Rb/1P2pp2/1PP2B1p/2p1qn2/K2pQ2p/P6b/4r1r1

#2

11 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.c6#
    • 1...Qe5
      • 2.c6#
    • 1...Se2
      • 2.Qxe4#
    • 1...Sd5
      • 2.c6#
    • 1...Sg6
      • 2.Bxe4#
  • Tries
    • 1.Bxe4+?
      • 1...Sd5
        • 2.c6#
      • 1...Bxe4!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Rb8#
      • 1...Qe5
        • 2.c6#
      • 1...Se2
        • 2.Qxe4#
      • 1...Sg2
        • 2.Bd6#
      • 1...Sd5
        • 2.c6#
      • 1...Sg6
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_GUARD,XB(F)::P(E)
    • Q(g);N_GUARD::P(E)
    • S(h);N_GUARD,S_CUTR(a)::QAB(C),XQ(g)
    • S(h);S_CUTQ(g)::P(E)
    • S(h);N_GUARD,S_CUTB(m)::B(F),XQ(g)
  • Tries
    • Try
      • B(F);CHECK,XQ(g)
      • Vars
        • S(h);P_SPINS(h)::P(E)
      • Refutation
        • B(m);XB(F)
  • Actual
    • S(H);
    • Threat
      • R1(K)
    • Vars
      • Q(g);N_GUARD::P(E)
      • S(h);N_GUARD,S_CUTR(a)::QAB(C),XQ(g)
      • S(h);S_CUTR(b)::R(J)+B(I)
      • S(h);S_CUTQ(g)::P(E)
      • S(h);N_GUARD,S_CUTB(m)::B(F),XQ(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).