MESON Chess Problem Database

Problem Display
PID: 244908 (R1N1b3/RPpkPp2/5K2/1P6/8/8/8/8 w - - 0 1)

Palatz, Franz Ferdinand Ludwig

Die Schwalbe, 1929

R1N1b3/RPpkPp2/5K2/1P6/8/8/8/8

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.b8Q#
      • 2.b8R#
    • 1...c6
      • 2.b8Q#
      • 2.b8R#
  • Tries
    • 1.Kf5?
      • 1...c5
        • 2.b8Q#
        • 2.b8R#
      • 1...c6
        • 2.b8Q#
        • 2.b8R#
      • 1...f6!
    • 1.Sb6+?
      • 1...cxb6
        • 2.b8Q#
      • 1...Kd6!
    • 1.Sd6?
      • threat
        • 2.Rd8#
      • 1...cxd6
        • 2.b8Q#
        • 2.b8R#
      • 1...c5
        • 2.b8Q#
        • 2.b8B#
      • 1...c6
        • 2.b8Q#
        • 2.b8B#
      • 1...Kxd6!
  • Keys
    • 1.b8B!
      • 1...Kxc8
        • 2.Rxc7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);::P=Q
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(a);::P=Q
      • Refutation
        • P(c);
    • Try
      • S(G);CHECK
      • Vars
        • P(a);XS(G)::P=Q
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(G);
      • Threat
        • R1(F)
      • Vars
        • P(a);XS(G)::P=Q
        • P(a);::P=Q
      • Refutation
        • K(b);P-FLIGHT,XS(G)
  • Actual
    • P(D);P_PINP(a)
    • Vars
      • K(b);N_SPINP(a),S_FLIGHT,XS(G)::R1(C),XP(a)
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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).