MESON Chess Problem Database

Problem Display
PID: 82276 (5QK1/4P3/4pNN1/Rb3Pk1/8/2rp2P1/8/B4R2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Tidskrift for Schack, 1985

5QK1/4P3/4pNN1/Rb3Pk1/8/2rp2P1/8/B4R2

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sh3#
        • 2.Sxe6#
      • 1...exf5
        • 2.Qg7#
      • 1...Rc6
        • 2.Sh3#
      • 1...Bc4
        • 2.Sh3#
        • 2.Qg7#
      • 1...Bd7
        • 2.Sh3#
        • 2.Qg7#
      • 1...e5
        • 2.Sh3#
        • 2.Se6#
      • 1...Kxf5!
    • 1.Sh4?
      • threat
        • 2.Qg7#
      • 1...Be8
        • 2.Sf3#
      • 1...Rc8!
    • 1.Sh8?
      • threat
        • 2.Qg7#
      • 1...Rc8
        • 2.Sf7#
      • 1...Be8!
    • 1.Bxc3?
      • threat
        • 2.Bd2#
      • 1...d2
        • 2.Bxd2#
      • 1...exf5!
    • 1.Qh6+?
      • 1...Kxf6
        • 2.Qh4#
      • 1...Kxh6!
    • 1.Qg7?
      • threat
        • 2.Sh4#
        • 2.Se5#
        • 2.Sf8#
        • 2.Sh8#
      • 1...Rc8+
        • 2.Sf8#
      • 1...e5
        • 2.Sh4#
        • 2.Sxe5#
        • 2.Sf8#
        • 2.Sh8#
      • 1...Be8!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qg7#
      • 1...Rc8
        • 2.Sf7#
      • 1...Be8
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);SBLOCK,XP(E)::QAR2(I)
        • R(a);::S(G)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(c),XP(E)
    • Try
      • S(G);
      • Threat
        • QAR2(I)
      • Vars
        • B(c);::S(G)
      • Refutation
        • R(a);P_PINQ(I)
    • Try
      • S(G);
      • Threat
        • QAR2(I)
      • Vars
        • R(a);P_PINQ(I)::S(G)
      • Refutation
        • B(c);
    • Try
      • B(A);XR(a)
      • Threat
        • B(A)
      • Vars
        • P(b);::B(A),XP(b)
      • Refutation
        • P(e);XP(E)
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);P_SPINR(a),S_FLIGHT,XS(F)::QAB(I)
      • Refutation
        • K(d);S_FLIGHT,XQ(I)
    • Try
      • Q(I);
      • Threat
        • DUALS(4)
      • Vars
        • R(a);CHECK::QAR(I)+S(G)
      • Refutation
        • B(c);
  • Actual
    • S(G);
    • Threat
      • QAR2(I)
    • Vars
      • R(a);P_PINQ(I)::S(G)
      • B(c);::S(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).