MESON Chess Problem Database

Problem Display
PID: 107308 (8/8/3Q4/3pP1r1/5kP1/2P2P2/3P1K2/1qB5 w - - 0 1)

Zilahi, Zoltan

Szerkeszti temaverseny, 1952

8/8/3Q4/3pP1r1/5kP1/2P2P2/3P1K2/1qB5

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.d3#
      • 2.d4#
    • 1...Qg6
      • 2.d3#
      • 2.d4#
    • 1...Qh7
      • 2.d3#
      • 2.d4#
    • 1...Qb3
      • 2.d3#
      • 2.d4#
    • 1...Qb4
      • 2.d3#
      • 2.d4#
    • 1...Qb5
      • 2.d3#
      • 2.d4#
    • 1...Qb6+
      • 2.d4#
    • 1...Qb7
      • 2.d3#
      • 2.d4#
    • 1...Qb8
      • 2.d3#
      • 2.d4#
  • Tries
    • 1.Qf6+?
      • 1...Qf5
        • 2.d3#
        • 2.d4#
      • 1...Rf5!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qh2#
      • 1...Qb6+
        • 2.d4#
      • 1...Kxe5
        • 2.d4#
      • 1...Qh7
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(a);CHECK,N_GUARD::B(A)+P(B)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • Q(H);P_PINR(d)
    • Threat
      • QAB(H)
    • Vars
      • Q(a);CHECK,N_GUARD::B(A)+P(B)
      • K(b);N_SPINR(d),S_FLIGHT,XP(G)::P(B)
      • Q(a);N_GUARD::B(A)+P(B)
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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).