MESON Chess Problem Database

Problem Display
PID: 81025 (8/7p/8/6Q1/1K1pp3/3k4/1ppprp2/1rqbb3 w - - 0 1)

Valuska, Jan

Smer, 1968

8/7p/8/6Q1/1K1pp3/3k4/1ppprp2/1rqbb3

#2

2 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Qb5#
    • 1...e3
      • 2.Qf5#
  • Tries
    • 1.Qd5?
      • threat
        • 2.Qb3#
      • 1...Re3
        • 2.Qc4#
        • 2.Qb5#
      • 1...e3
        • 2.Qf5#
      • 1...Ke3!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qb3#
      • 1...Ke3
        • 2.Qg3#
      • 1...Re3
        • 2.Qc4#
      • 1...e3
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(h);SBLOCK::QAB(B)
    • P(l);OGATEB,SBLOCK::QAB(B)
  • Tries
    • Try
      • Q(B);P_PINP(k)
      • Threat
        • QAR2(B)
      • Vars
        • P(l);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(j);N_SPINP(k),P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(j);P-FLIGHT::QAR2(B)
      • R(h);SBLOCK::QAB1(B)
      • P(l);OGATEB,SBLOCK::QAB(B),XP(m)
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).