MESON Chess Problem Database

Problem Display
PID: 273837 (6r1/bN6/5Q2/r4pp1/5k2/p2P1N1P/6K1/8 w - - 0 1)

Klages, Wilhelm

Die Schwalbe, 1932

6r1/bN6/5Q2/r4pp1/5k2/p2P1N1P/6K1/8

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qe5#
    • 1...Rc5
      • 2.Qd4#
    • 1...Re5
      • 2.Qxe5#
    • 1...Ra6
      • 2.Qe5#
    • 1...Ra8
      • 2.Qxg5#
    • 1...Rb8
      • 2.Qxg5#
    • 1...Rc8
      • 2.Qxg5#
    • 1...Rd8
      • 2.Qxg5#
    • 1...Re8
      • 2.Qxg5#
    • 1...Rf8
      • 2.Qxg5#
    • 1...Rh8
      • 2.Qxg5#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bc5
      • 2.Qe5#
    • 1...Bb8
      • 2.Qd4#
  • Tries
    • 1.Sxa5?
      • threat
        • 2.Qe5#
      • 1...Re8
        • 2.Qxg5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bb8
        • 2.Qd4#
      • 1...Ke3!
    • 1.Qd6+?
      • 1...Re5
        • 2.Qxe5#
      • 1...Ke3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Ke3
        • 2.Qe5#
      • 1...Rxc5
        • 2.Qd4#
      • 1...Bxc5
        • 2.Qe5#
      • 1...Ra4
        • 2.Qe5#
      • 1...Rd8
        • 2.Qe5#
        • 2.Qxg5#
      • 1...Re8
        • 2.Qxg5#
      • 1...Bb8
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(c);N_GUARD::QAB1(E)
    • R(c);S_CUTB(f)::QAR2(E)
    • R(c);N_GUARD::QAB1(E),XR(c)
    • R(g);N_GUARD::QAB1(E),XP(e)
    • B(f);N_GUARD::QAR2(E),XB(f)
    • B(f);S_CUTR(c)::QAB1(E)
    • B(f);N_GUARD::QAR2(E)
  • Tries
    • Try
      • S(F);XR(c)
      • Threat
        • QAB1(E)
      • Vars
        • R(g);N_GUARD::QAB1(E),XP(e)
        • B(f);N_GUARD::QAR2(E),XB(f)
        • B(f);N_GUARD::QAR2(E)
      • Refutation
        • K(b);N_SPINP(d),S_FLIGHT
    • Try
      • Q(E);CHECK,N_PINP(d)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(E),XR(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);N_SPINP(d),S_FLIGHT::QAR2(E)
      • R(c);XS(F)::QAR2(E)
      • B(f);XS(F)::QAB1(E)
      • R(c);::QAB1(E)
      • R(g);N_GUARD::QAB1(E),XP(e)
      • B(f);::QAR2(E)
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).