MESON Chess Problem Database

Problem Display
PID: 158084 (1rN1RB2/r2B2P1/4N1Kn/1n2kp2/1QP5/b1P2P2/4p3/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

El Ajedrez Espanol, 1960

1rN1RB2/r2B2P1/4N1Kn/1n2kp2/1QP5/b1P2P2/4p3/8

#2

11 + 8

15148 Sadier Collection 2016
56 The Problemist 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qc5#
    • 1...Bb2
      • 2.Qc5#
    • 1...Sxc3
      • 2.Bd6#
      • 2.Qxc3#
    • 1...Sd4
      • 2.Bd6#
      • 2.cxd4#
    • 1...Sd6
      • 2.Bxd6#
    • 1...Sc7
      • 2.Bd6#
    • 1...f4
      • 2.Sd4#
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sc7#
      • 2.Sd8#
  • Tries
    • 1.Bc6?
      • threat
        • 2.f4#
      • 1...Rxg7+
        • 2.Bxg7#
      • 1...Bc1
        • 2.Qc5#
      • 1...f4
        • 2.Sc7#
      • 1...Re7!
    • 1.Qb1?
      • threat
        • 2.f4#
      • 1...f4
        • 2.Sc5#
        • 2.Qe4#
      • 1...Bc1!
    • 1.Qxb5+?
      • 1...Bc5
        • 2.Bd6#
        • 2.Qxc5#
      • 1...Rxb5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.f4#
      • 1...Sxd6
        • 2.Bxd6#
      • 1...Bc1
        • 2.Qc5#
      • 1...f4
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD::QAR2(C)
    • S(c);N_GUARD::B(K),XS(c)
    • S(c);N_GUARD::B(K)
  • Tries
    • Try
      • B(G);
      • Threat
        • P(B)
      • Vars
        • R(g);CHECK,OGATE,XP(H)::B(K),XR(g)
        • B(b);N_GUARD::QAR2(C)
        • P(e);SBLOCK::R(J)+S(E)
      • Refutation
        • R(g);
    • Try
      • Q(C);
      • Threat
        • P(B)
      • Refutation
        • B(b);
    • Try
      • Q(C);CHECK,XS(c)
      • Refutation
        • R(h);XQ(C)
  • Actual
    • S(I);
    • Threat
      • P(B)
    • Vars
      • S(c);OGATE,XS(I)::B(K),XS(c)
      • B(b);N_GUARD::QAR2(C)
      • P(e);SBLOCK::R(J)+S(E)
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).