MESON Chess Problem Database

Problem Display
PID: 80204 (8/8/QN2p3/1p2P3/1p6/Nk6/8/1K6 w - - 0 1)

Hahnel, Peter

Freie Presse, 1994

8/8/QN2p3/1p2P3/1p6/Nk6/8/1K6

#2

5 + 4

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Tries
    • 1.Sd5?
      • 1...bxa3
        • 2.Qxb5#
      • 1...exd5!
    • 1.Qxb5?
      • threat
        • 2.Qd3#
      • 1...Kxa3
        • 2.Qa4#
      • 1...Kc3!
  • Keys
    • 1.Sa4!
      • 1...Kxa3
        • 2.Sc5#
      • 1...bxa3
        • 2.Qxb5#
      • 1...bxa4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • P(b);OGATEB,SBLOCK,XS(B)::QAR2(D),XP(c)
      • Refutation
        • P(d);XS(E)
    • Try
      • Q(D);P_PINP(b),XP(c)
      • Threat
        • QAR2(D)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT,XS(B)::QAR1(D)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);P-FLIGHT,XS(B)::QAR(D)+S(E)
      • P(b);OGATEB,SBLOCK,XS(B)::QAR2(D),XP(c)
      • P(c);OGATE,SBLOCK,XS(E)::QAR2(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).