MESON Chess Problem Database

Problem Display
PID: 206299 (8/4Np2/3p1P2/3P2Pp/P1Nk3P/KP4P1/1p2p3/1B2B3 w - - 0 1)

Karsch, Wilhelm

L'Alfiere di Re, 1925

8/4Np2/3p1P2/3P2Pp/P1Nk3P/KP4P1/1p2p3/1B2B3

#2

12 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Bf2#
  • Tries
    • 1.Sxb2?
      • 1...Kc5
        • 2.Bf2#
      • 1...Ke5
        • 2.Bc3#
      • 1...Ke3!
    • 1.Sa5?
      • 1...Kc5
        • 2.Bf2#
      • 1...Ke5
        • 2.Sac6#
        • 2.Bc3#
      • 1...Ke3!
    • 1.Se5?
      • 1...Ke3
        • 2.Sf5#
      • 1...Kc5
        • 2.Bf2#
      • 1...Kxe5
        • 2.Bc3#
      • 1...dxe5!
    • 1.Sb6?
      • 1...Kc5
        • 2.Bf2#
      • 1...Ke5
        • 2.Sc6#
        • 2.Bc3#
      • 1...Ke3!
    • 1.g4?
      • 1...Kc5
        • 2.Bf2#
      • 1...hxg4!
    • 1.g6?
      • 1...Kc5
        • 2.Bf2#
      • 1...fxg6!
  • Keys
    • 1.Sd2!
      • 1...Kc3
        • 2.Sf3#
      • 1...Ke3
        • 2.Sf5#
      • 1...Kc5
        • 2.Bf2#
      • 1...Ke5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(B)
  • Tries
    • Try
      • S(G);XP(a)
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(G);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(G);
      • Vars
        • K(c);S_FLIGHT::S(L)
        • K(c);S_FLIGHT::B(B)
        • K(c);S_FLIGHT,XS(G)::B(B)
      • Refutation
        • P(e);XS(G)
    • Try
      • S(G);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • P(d);XP(E)
    • Try
      • P(J);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • P(f);XP(J)
  • Actual
    • S(G);
    • Vars
      • K(c);S_FLIGHT::B(B)+S(G)
      • K(c);S_FLIGHT::S(L)
      • K(c);S_FLIGHT::B(B)
      • K(c);S_FLIGHT::S(G)
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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).