MESON Chess Problem Database

Problem Display
PID: 110570 (K4QB1/8/7B/b7/3k4/8/8/8 w - - 0 1)

Bajtay, Jozsef

Karpati Igaz Szo, 1968

K4QB1/8/7B/b7/3k4/8/8/8

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf4#
  • Tries
    • 1.Qb4+?
      • 1...Kd3
        • 2.Qc4#
      • 1...Ke5
        • 2.Qf4#
      • 1...Bxb4!
    • 1.Qc5+?
      • 1...Kd3
        • 2.Qc4#
      • 1...Ke4
        • 2.Qd5#
      • 1...Kxc5!
    • 1.Qf4+?
      • 1...Kc3
        • 2.Qd2#
      • 1...Kd3
        • 2.Qc4#
      • 1...Kc5!
  • Keys
    • 1.Qd6+!
      • 1...Kc3
        • 2.Qd2#
      • 1...Ke4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • K(a);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • B(b);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);OGATE,P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);CHECK
    • Vars
      • K(a);OGATE,S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAB1(C)
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).