MESON Chess Problem Database

Problem Display
PID: 125405 (8/8/5K1B/8/4p1k1/4Q1p1/6N1/8 w - - 0 1)

Anonymous

Source?, 0000

8/8/5K1B/8/4p1k1/4Q1p1/6N1/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kh5
      • 2.Qg5#
  • Tries
    • 1.Ke5?
      • 1...Kh5
        • 2.Qg5#
      • 1...Kh3!
    • 1.Ke6?
      • 1...Kh5
        • 2.Qg5#
      • 1...Kh3!
    • 1.Ke7?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kh3!
    • 1.Kf7?
      • 1...Kf5
        • 2.Qf4#
        • 2.Qg5#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kh3!
    • 1.Sf4?
      • 1...g2
        • 2.Qh3#
      • 1...Kh4!
    • 1.Bg5?
      • 1...Kh5
        • 2.Qe2#
      • 1...Kh3!
    • 1.Bg7?
      • 1...Kh5
        • 2.Qg5#
        • 2.Qe2#
      • 1...Kh3!
    • 1.Bf8?
      • 1...Kh5
        • 2.Qg5#
        • 2.Qe2#
      • 1...Kh3!
    • 1.Qf4+?
      • 1...Kh5
        • 2.Qg5#
        • 2.Qh4#
      • 1...Kh3!
    • 1.Qxg3+?
      • 1...Kh5
        • 2.Qh4#
        • 2.Qh3#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Kxg3!
    • 1.Qxe4+?
      • 1...Kh5
        • 2.Qg6#
        • 2.Qh4#
      • 1...Kh3!
  • Keys
    • 1.Bf4!
      • 1...Kh3
        • 2.Qxg3#
      • 1...Kh5
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAR1(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAR1(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAR1(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAR1(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(a);OGATE::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • B(D);
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • B(D);
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK,XP(a)
      • Refutation
        • K(c);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK,XP(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::QAR1(B),XP(a)
      • K(c);S_FLIGHT::QAB(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).