MESON Chess Problem Database

Problem Display
PID: 203667 (1B6/2N5/3pp3/1B4P1/3kp3/3P4/1K6/2Q5 w - - 0 1)

Henning, Hans

Funkschach, 1927

1B6/2N5/3pp3/1B4P1/3kp3/3P4/1K6/2Q5

#2

7 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qc3#
    • 1...d5
      • 2.Sxe6#
    • 1...e5
      • 2.Ba7#
  • Tries
    • 1.Qe3+?
      • 1...Ke5
        • 2.Qxe4#
      • 1...Kxe3!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qxe4#
      • 1...Ke3!
  • Keys
    • 1.Qe1!
      • 1...Kc5
        • 2.Ba7#
      • 1...Ke5
        • 2.Qxe4#
      • 1...exd3
        • 2.Ba7#
      • 1...e3
        • 2.Qc3#
      • 1...d5
        • 2.Sxe6#
      • 1...e5
        • 2.Ba7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB1(A)
    • P(c);SBLOCK::S(F),XP(d)
    • P(d);SBLOCK::B(G)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::B(G)
      • K(a);P_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
      • P(b);XP(C)::B(G)
      • P(b);SBLOCK::QAB1(A)
      • P(c);SBLOCK::S(F),XP(d)
      • P(d);SBLOCK::B(G)
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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).