MESON Chess Problem Database

Problem Display
PID: 206692 (8/1p6/1B2Qp2/4b3/3pk2p/7N/2P1NK2/8 w - - 0 1)

Sonnenfeld, Pal

Nepszava, 1925

8/1p6/1B2Qp2/4b3/3pk2p/7N/2P1NK2/8

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Sc3#
    • 1...f5
      • 2.Sg5#
  • Tries
    • 1.Sc1?
      • 1...d3
        • 2.cxd3#
      • 1...f5!
    • 1.Shf4?
      • 1...f5
        • 2.Qd5#
      • 1...d3
        • 2.cxd3#
      • 1...h3!
  • Keys
    • 1.Sef4!
      • 1...f5
        • 2.Qd5#
      • 1...d3
        • 2.cxd3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::S(B)
    • P(e);N_GUARD::S(D)
  • Tries
    • Try
      • S(B);
      • Vars
        • P(a);OGATE::P(A),XP(a)
      • Refutation
        • P(e);
    • Try
      • S(D);
      • Vars
        • P(e);SBLOCK::QAB1(F)
        • P(a);OGATE::P(A),XP(a)
      • Refutation
        • P(c);
  • Actual
    • S(B);
    • Vars
      • P(e);SBLOCK::QAB1(F)
      • P(a);OGATE::P(A),XP(a)
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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).