MESON Chess Problem Database

Problem Display
PID: 84197 (8/2p2NN1/2K4p/7P/4k3/4b3/2P3P1/4Q3 w - - 0 1)

Drazkowski, Krzysztof

Szachy, 1990

8/2p2NN1/2K4p/7P/4k3/4b3/2P3P1/4Q3

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qb4#
    • 1...Kf4
      • 2.Qh4#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qe5#
      • 1...Bd4
        • 2.Qf3#
      • 1...Bf4
        • 2.Qd3#
      • 1...Kf4!
    • 1.Qg3?
      • threat
        • 2.Qe5#
      • 1...Bd4
        • 2.Qf3#
      • 1...Bf4
        • 2.Qd3#
      • 1...Kd4!
    • 1.c3?
      • 1...Kf4
        • 2.Qh4#
      • 1...Kd3!
    • 1.g3?
      • 1...Kd4
        • 2.Qb4#
      • 1...Kf3!
  • Keys
    • 1.Qe2!
      • 1...Kd4
        • 2.Qd3#
      • 1...Kf4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(a),P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • Q(A);N_PINB(a)
      • Threat
        • QAR1(A)
      • Vars
        • B(a);OGATE,SBLOCK::QAB1(A)
        • B(a);SBLOCK::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);N_PINB(a)
      • Threat
        • QAR1(A)
      • Vars
        • B(a);SBLOCK::QAB1(A)
        • B(a);OGATE,SBLOCK::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(B);
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);N_SPINB(a),P-FLIGHT::QAR1(A)
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).