MESON Chess Problem Database

Problem Display
PID: 91906 (8/Kp6/8/5Q2/pk6/b3N3/pp2N3/8 w - - 0 1)

Herland, Sigmund

Deutsche Schachzeitung, 1914

8/Kp6/8/5Q2/pk6/b3N3/pp2N3/8

#2

4 + 6

16336 Problemes choisis composes par Sigmund Herland (Yaremska-Iliescu) 2001
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2+?
      • 1...Kb3
        • 2.Qd3#
      • 1...Kc4!
    • 1.Qe6?
      • threat
        • 2.Qb6#
      • 1...Ka5
        • 2.Qb6#
      • 1...Kb5
        • 2.Qb6#
      • 1...Kc5
        • 2.Qb6#
      • 1...b6
        • 2.Qxb6#
      • 1...b5!
    • 1.Qa5+?
      • 1...Kb3
        • 2.Sd4#
        • 2.Qc3#
      • 1...Kxa5!
    • 1.Qc5+?
      • 1...Kb3
        • 2.Sd4#
        • 2.Qc3#
        • 2.Qc4#
      • 1...Kxc5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qb6#
      • 1...Kb3
        • 2.Qc3#
      • 1...Ka5
        • 2.Qb6#
      • 1...Kb5
        • 2.Qb6#
      • 1...Kc5
        • 2.Qb6#
      • 1...b5
        • 2.Qc3#
      • 1...b6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR2(C)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(e);S_FLIGHT::QAB1(C)
        • K(e);P-FLIGHT::QAR1(C)
        • P(f);::QAR2(C),XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(e);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(e);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(e);P-FLIGHT::QAR1(C)
      • K(e);S_FLIGHT::QAB1(C)
      • P(f);SBLOCK::QAB1(C)
      • P(f);::QAR2(C),XP(f)
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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).