MESON Chess Problem Database

Problem Display
PID: 187894 (8/1p2p1Kp/4P3/3pk1p1/1Q3NP1/5P2/3PP3/2n5 w - - 0 1)

Owen, Leonard E

Hamburg Ty., 1910

8/1p2p1Kp/4P3/3pk1p1/1Q3NP1/5P2/3PP3/2n5

#2

8 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sg6+?
      • 1...Kxe6
        • 2.Qxe7#
      • 1...hxg6!
    • 1.Qc3+?
      • 1...Kxf4
        • 2.Qc7#
      • 1...d4
        • 2.Qc7#
      • 1...Kd6!
  • Keys
    • 1.Qb6!
      • 1...Kxf4
        • 2.Qc7#
      • 1...Sxe2
        • 2.Sd3#
      • 1...gxf4
        • 2.d4#
      • 1...Sa2
        • 2.Sd3#
      • 1...Sb3
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...d4
        • 2.Qc7#
      • 1...h5
        • 2.Sg6#
      • 1...h6
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(G)::QAR1(D),XP(f)
      • Refutation
        • P(g);XS(E)
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(E)::QAB(D)
        • P(b);P_SPINP(b),SBLOCK::QAB(D)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(c);S_FLIGHT,XS(E)::QAB(D)
      • S(a);N_GUARD,XP(B)::S(E)
      • P(d);SBLOCK,XS(E)::P(A)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
      • P(b);SBLOCK::QAB(D)
      • P(g);N_GUARD::S(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).