MESON Chess Problem Database

Problem Display
PID: 137936 (8/6K1/3N4/4p3/8/4k3/7Q/4N3 w - - 0 1)

Mortensen, Jan Robert (aka 'Adamas')

Die Schwalbe, 1964

8/6K1/3N4/4p3/8/4k3/7Q/4N3

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Sf5#
  • Tries
    • 1.Kg6?
      • 1...e4
        • 2.Sf5#
      • 1...Kd4!
    • 1.Kh6?
      • 1...e4
        • 2.Sf5#
      • 1...Kd4!
    • 1.Kf7?
      • 1...e4
        • 2.Sf5#
      • 1...Kd4!
    • 1.Kh7?
      • 1...e4
        • 2.Sf5#
      • 1...Kd4!
    • 1.Kf8?
      • 1...e4
        • 2.Sf5#
      • 1...Kd4!
    • 1.Kg8?
      • 1...e4
        • 2.Sf5#
      • 1...Kd4!
    • 1.Kh8?
      • 1...e4
        • 2.Sf5#
      • 1...Kd4!
    • 1.Sc4+?
      • 1...Ke4
        • 2.Qxe5#
      • 1...Kd4!
  • Keys
    • 1.Kf6!
      • 1...Kd4
        • 2.Qxe5#
      • 1...e4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::S(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);SBLOCK::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(b);SBLOCK::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);SBLOCK::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);SBLOCK::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(b);SBLOCK::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);SBLOCK::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(b);SBLOCK::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • K(a);S_FLIGHT::QAB1(B),XP(b)
      • P(b);SBLOCK::S(C)
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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).