MESON Chess Problem Database

Problem Display
PID: 120123 (n7/4N3/Bk6/8/1p6/1p5p/1P5B/Q5K1 w - - 0 1)

Decker, Adolfph L

Deutsche Schachblatter, 1916

n7/4N3/Bk6/8/1p6/1p5p/1P5B/Q5K1

#2

6 + 5

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Sc8#
  • Tries
    • 1.Kf1?
      • 1...Ka7
        • 2.Sc8#
      • 1...Sc7
        • 2.Bg1#
      • 1...Kc5!
    • 1.Be5?
      • 1...Kc5
        • 2.Qa5#
      • 1...Ka7
        • 2.Sc8#
      • 1...Sc7
        • 2.Bd4#
      • 1...h2+!
    • 1.Qf1?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc5
        • 2.Qf2#
      • 1...Ka7
        • 2.Sc8#
      • 1...Sc7!
    • 1.Qa5+?
      • 1...Ka7
        • 2.Sc6#
        • 2.Sc8#
        • 2.Bc8#
      • 1...Kxa5!
  • Keys
    • 1.Kh1!
      • 1...Kc5
        • 2.Qg1#
      • 1...Ka7
        • 2.Sc8#
      • 1...Sc7
        • 2.Bg1#

This anticipates 22762(1930)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::S(F)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(d);S_FLIGHT::S(F)
        • S(e);SBLOCK::B(D)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(d);S_FLIGHT::QAR2(A)
        • K(d);S_FLIGHT::S(F)
        • S(e);SBLOCK::B(D)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(A);
      • Vars
        • K(d);S_FLIGHT::QAR1(A)
        • K(d);S_FLIGHT::QAB(A)
        • K(d);S_FLIGHT::S(F)
      • Refutation
        • S(e);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);S_FLIGHT,XQ(A)
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(d);S_FLIGHT::QAB(A)
      • K(d);S_FLIGHT::S(F)
      • S(e);SBLOCK::B(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).