MESON Chess Problem Database

Problem Display
PID: 82083 (Kb3n2/8/3p1R2/n2Pk1p1/3RNp2/6Pr/4B2q/BbQ4r w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Echo, 1960

Kb3n2/8/3p1R2/n2Pk1p1/3RNp2/6Pr/4B2q/BbQ4r

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Rd1#
      • 2.Rd2#
      • 2.Rd3#
    • 1...fxg3
      • 2.Qxg5#
    • 1...f3
      • 2.Qxg5#
    • 1...g4
      • 2.Qxf4#
  • Tries
    • 1.Bg4?
      • threat
        • 2.Rf5#
      • 1...Bxe4
        • 2.Rd2#
      • 1...Qb2!
    • 1.Re6+?
      • 1...Kf5
        • 2.g4#
      • 1...Sxe6!
    • 1.g4?
      • threat
        • 2.Rf5#
      • 1...Bxe4
        • 2.Rd3#
      • 1...Rc3!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Rf5#
        • 2.Qf5#
      • 1...Bxe4
        • 2.Rd1#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • P(e);OGATE,XP(D)::QAR2(B),XP(h)
    • P(e);OGATE::QAR2(B),XP(h)
    • P(h);N_GUARD::QAB1(B),XP(e)
  • Tries
    • Try
      • B(C);
      • Threat
        • R1(H)
      • Vars
        • B(a);P_PINP(G),SBLOCK,XS(F)::B(A)+R(E)
      • Refutation
        • Q(c);
    • Try
      • R(H);CHECK
      • Vars
        • K(g);P-FLIGHT::P(D)
      • Refutation
        • S(k);XR(H)
    • Try
      • P(D);
      • Threat
        • R1(H)
      • Vars
        • B(a);P_PINP(G),SBLOCK,XS(F)::B(A)+R(E)
      • Refutation
        • R(d);
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • B(a);P_PINP(G),SBLOCK,XS(F)::B(A)+R(E)
      • S(k);N_GUARD::QAR1(B),XS(k)
      • S(k);N_GUARD::QAR(B)
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).