MESON Chess Problem Database

Problem Display
PID: 219834 (2r5/2b1p3/6Q1/3k4/1B6/1NP5/5p2/1K3B2 w - - 0 1)

Hermanson, Halvar

Freie Presse, 1965

2r5/2b1p3/6Q1/3k4/1B6/1NP5/5p2/1K3B2

#2

6 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.c4#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qe4#
      • 1...Be5
        • 2.Bg2#
      • 1...e5
        • 2.Bc4#
      • 1...Ke5!
    • 1.Sc5?
      • threat
        • 2.Qe6#
      • 1...Bd6
        • 2.Qe4#
      • 1...e6
        • 2.Qxe6#
      • 1...Ke5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qe6#
      • 1...Ke5
        • 2.Qf5#
      • 1...Be5
        • 2.Qg2#
      • 1...e5
        • 2.Qc6#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::P(D)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(F)
      • Vars
        • B(c);SBLOCK::B(B)
        • P(d);SBLOCK::B(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(C);
      • Threat
        • QAB1(F)
      • Vars
        • B(c);SBLOCK::QAB1(F)
        • P(d);::QAB1(F),XP(d)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(F)
    • Vars
      • K(b);P-FLIGHT::QAR1(F)
      • B(c);SBLOCK::QAB(F)
      • P(d);SBLOCK::QAB1(F)
      • P(d);::QAB1(F),XP(d)
HTML5 logo

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).