MESON Chess Problem Database

Problem Display
PID: 227458 (8/5KB1/8/2kp4/6N1/1Q3P2/8/8 w - - 0 1)

Schaffer, Hans

Das Ratsel, 1926

8/5KB1/8/2kp4/6N1/1Q3P2/8/8

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5+?
      • 1...Kd6
        • 2.Be5#
      • 1...Kxb5!
  • Keys
    • 1.Se5!
      • 1...Kd4
        • 2.Sd7#
      • 1...Kd6
        • 2.Qb6#
      • 1...d4
        • 2.Bf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::B(E)+S(C)
      • K(a);S_FLIGHT::QAR2(A)
      • P(b);SBLOCK::B(E)
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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).