MESON Chess Problem Database

Problem Display
PID: 157293 (qbN1n3/pn4N1/5k1B/5P2/3KpP2/4Pb2/BQ6/8 w - - 0 1)

Ellerman, Arnoldo

Guidelli MT (L'Alfiere di Re), 1918

qbN1n3/pn4N1/5k1B/5P2/3KpP2/4Pb2/BQ6/8

#2

9 + 8

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Be5+
      • 2.fxe5#
    • 1...Sbd6
      • 2.Kc5#
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qe6#
        • 2.Qf7#
      • 1...Be5+
        • 2.fxe5#
      • 1...Sxg7
        • 2.Qf7#
      • 1...Bh5
        • 2.Qe6#
      • 1...Sc5
        • 2.Qf7#
      • 1...Sbd6
        • 2.Qe6#
      • 1...Sed6
        • 2.Qe6#
      • 1...Sc7
        • 2.Qf7#
      • 1...Sd8!
    • 1.Qb5?
      • threat
        • 2.Sxe8#
      • 1...Be5+
        • 2.Qxe5#
        • 2.fxe5#
      • 1...Sxg7
        • 2.Bg5#
      • 1...Bh5
        • 2.Sxh5#
      • 1...Sbd6
        • 2.Qe5#
      • 1...Sed6
        • 2.Qe5#
      • 1...Sc7
        • 2.Qe5#
      • 1...Sc5!
  • Keys
    • 1.Be6!
      • threat
        • 2.Sxe8#
      • 1...Be5+
        • 2.fxe5#
      • 1...Sxg7
        • 2.Bg5#
      • 1...Bh5
        • 2.Sxh5#
      • 1...Sbd6
        • 2.Kc5#
      • 1...Sed6
        • 2.Kd5#
      • 1...Sc7
        • 2.Kc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(g);CHECK,OGATE::P(E),XB(g)
    • S(e);::QAB(B)+K(D)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);CHECK,OGATE::P(E),XB(g)
        • S(h);XS(H)::QAR1(B)
        • B(a);::QAR1(B)
        • S(e);::QAR1(B)
        • S(h);::QAR1(B)
      • Refutation
        • S(e);
    • Try
      • Q(B);
      • Threat
        • S(H),XS(h)
      • Vars
        • S(h);SBLOCK,XS(H)::B(G)
        • B(a);N_GUARD::S(H),XB(a)
        • S(e);S_CUTB(g)::QAB1(B)
        • S(h);S_CUTB(g)::QAB1(B)
      • Refutation
        • S(e);
  • Actual
    • B(A);
    • Threat
      • S(H),XS(h)
    • Vars
      • B(g);CHECK,OGATE::P(E),XB(g)
      • S(h);SBLOCK,XS(H)::B(G)
      • B(a);N_GUARD::S(H),XB(a)
      • S(e);::QAB(B)+K(D)
      • S(h);S_CUTB(g)::QAB(B)+K(D)
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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).