MESON Chess Problem Database

Problem Display
PID: 225395 (8/5K2/4B2B/2b1k3/4p3/4p3/8/1Q6 w - - 0 1)

Bidlen, Anton

Praca, 1993

8/5K2/4B2B/2b1k3/4p3/4p3/8/1Q6

#2

4 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bg7#
    • 1...Bd4
      • 2.Qb8#
    • 1...Bd6
      • 2.Qa1#
      • 2.Qb2#
  • Tries
    • 1.Qxe4+?
      • 1...Kd6
        • 2.Bf4#
      • 1...Kxe4!
    • 1.Qb2+?
      • 1...Bd4
        • 2.Qh2#
        • 2.Qb8#
      • 1...Kd6!
    • 1.Qb3?
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Bg7#
      • 1...Kd6!
    • 1.Qb7?
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Bf4#
      • 1...Kd4!
    • 1.Qb8+?
      • 1...Bd6
        • 2.Qb2#
        • 2.Qh8#
      • 1...Kd4!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxc5#
      • 1...Kd4
        • 2.Bg7#
      • 1...Kd6
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(d);S_FLIGHT::B(C)
    • B(c);N_GUARD,SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • K(d);S_FLIGHT::B(C)
      • Refutation
        • K(d);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(d);S_FLIGHT::B(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(d);S_FLIGHT::B(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);P_PINB(c)
    • Threat
      • QAR2(A),XB(c)
    • Vars
      • K(d);N_SPINB(c),S_FLIGHT::B(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).