MESON Chess Problem Database

Problem Display
PID: 83611 (2B5/5p2/7p/1p3K2/r1p1R2N/3p2pk/1b6/Q1n1NbB1 w - - 0 1)

Ellerman, Arnoldo

Sahovski Glasnik, 1931

2B5/5p2/7p/1p3K2/r1p1R2N/3p2pk/1b6/Q1n1NbB1

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Kf6#
    • 1...Bf6
      • 2.Kxf6#
    • 1...c3
      • 2.Kf6#
  • Tries
    • 1.Shg2?
      • threat
        • 2.Rh4#
      • 1...Bf6
        • 2.Kf4#
        • 2.Kxf6#
      • 1...c3
        • 2.Kf6#
      • 1...Bxg2!
    • 1.Shf3?
      • threat
        • 2.Rh4#
      • 1...Bf6
        • 2.Kf4#
        • 2.Kxf6#
      • 1...c3
        • 2.Kf6#
      • 1...g2!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Rh4#
      • 1...fxg6+
        • 2.Kxg6#
      • 1...g2
        • 2.Re3#
      • 1...Bf6
        • 2.Kf4#
        • 2.Kxf6#
      • 1...c3
        • 2.Kf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(c);::B(G)+K(F)
    • B(c);::B(G)+K(F),XB(c)
    • P(h);::B(G)+K(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(D)
      • Vars
        • P(h);::B(G)+K(F)
      • Refutation
        • B(b);XS(E)
    • Try
      • S(E);
      • Threat
        • R1(D)
      • Vars
        • P(h);::B(G)+K(F)
      • Refutation
        • P(e);
  • Actual
    • S(E);
    • Threat
      • R1(D)
    • Vars
      • P(k);CHECK,XS(E)::B(G)+K(F),XP(k)
      • P(e);OGATEB::R(D)
      • P(h);::B(G)+K(F)
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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).