MESON Chess Problem Database

Problem Display
PID: 189905 (b2b1r2/8/p7/k1N5/1R6/2P3Bp/q1p3PK/2Q5 w - - 0 1)

Ernst, Georg

Magyar Sakkujsag, 1912

b2b1r2/8/p7/k1N5/1R6/2P3Bp/q1p3PK/2Q5

#2

7 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qa3#
    • 1...Qb3
      • 2.Sxb3#
    • 1...Qc4
      • 2.Qa3#
    • 1...Qd5
      • 2.Qa3#
    • 1...Qe6
      • 2.Qa3#
    • 1...Qf7
      • 2.Qa3#
    • 1...Qg8
      • 2.Qa3#
    • 1...Qa1
      • 2.Sb3#
      • 2.Qxa1#
    • 1...Qa3
      • 2.Qxa3#
    • 1...Bb7
      • 2.Sxb7#
    • 1...Bh4
      • 2.Bc7#
    • 1...Bg5
      • 2.Bc7#
    • 1...Bf6
      • 2.Bc7#
    • 1...Bc7
      • 2.Bxc7#
    • 1...Be7
      • 2.Bc7#
  • Keys
    • 1.Qg5!
      • threat
        • 2.Sb3#
        • 2.Sb7#
      • 1...Bxg5
        • 2.Bc7#
      • 1...Qb3
        • 2.Sxb3#
        • 2.Sb7#
      • 1...Qd5
        • 2.Sb3#
      • 1...Rf5
        • 2.Qxd8#
      • 1...Bd5
        • 2.Sb7#
      • 1...Bb7
        • 2.Sb3#
        • 2.Sxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 12
  • Sets
    • Q(a);N_GUARD::QAR2(A)
    • Q(a);N_GUARD::S(G),XQ(a)
    • Q(a);N_GUARD::QAR2(A),XQ(a)
    • B(f);N_GUARD::S(G),XB(f)
    • B(g);N_GUARD::B(E)
    • B(g);N_GUARD,P_PINB(E)::B(E),XB(g)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • B(g);N_GUARD,XQ(A)::B(E)
      • Q(a);::S(G)
      • R(h);N_GUARD::QAB(A),XB(g)
      • B(f);::S(G)
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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).