MESON Chess Problem Database

Problem Display
PID: 82390 (5Q2/6K1/2b1N3/R1r1kBp1/2P2p2/2n1rq2/8/4R3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schachzeitung, 2000

5Q2/6K1/2b1N3/R1r1kBp1/2P2p2/2n1rq2/8/4R3

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sxg5?
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Qxc5#
      • 1...Sd5
        • 2.Sxf3#
      • 1...Se4!
    • 1.Sd8?
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Qxc5#
      • 1...Se4
        • 2.Sxc6#
      • 1...Sd5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf6#
      • 1...Kxd4
        • 2.Qxc5#
      • 1...Se4
        • 2.Sxc6#
      • 1...Sd5
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);XP(g)
      • Threat
        • QAB1(G)
      • Vars
        • K(f);N_SPINR(b),S_FLIGHT::QAB1(G),XR(e)
        • S(a);S_CUTB(h)::S(E),XQ(c)
      • Refutation
        • S(a);N_SPINR(b),P_SPINR(e)
    • Try
      • S(E);
      • Threat
        • QAB1(G)
      • Vars
        • K(f);N_SPINR(b),S_FLIGHT::QAB1(G),XR(e)
        • S(a);N_SPINR(b),P_SPINR(e),S_CUTQ(c)::S(E),XB(h)
      • Refutation
        • S(a);
  • Actual
    • S(E);
    • Threat
      • QAB1(G)
    • Vars
      • K(f);N_SPINR(b),S_FLIGHT,XS(E)::QAB1(G),XR(e)
      • S(a);N_SPINR(b),P_SPINR(e),S_CUTQ(c)::S(E),XB(h)
      • S(a);S_CUTB(h)::S(E),XQ(c)
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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).