MESON Chess Problem Database

Problem Display
PID: 6003 (4KbN1/5P2/6k1/8/7Q/4N3/8/8 w - - 0 1)

ten Cate, Pieter

De Maasbode, 1926

4KbN1/5P2/6k1/8/7Q/4N3/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kg7
      • 2.Qh6#
    • 1...Ba3
      • 2.Qh6#
    • 1...Bb4
      • 2.Qh6#
    • 1...Bc5
      • 2.Qh6#
    • 1...Bd6
      • 2.Qh6#
    • 1...Bh6
      • 2.Qxh6#
    • 1...Be7
      • 2.Qh6#
    • 1...Bg7
      • 2.Se7#
  • Tries
    • 1.Se7+?
      • 1...Kg7
        • 2.S3f5#
      • 1...Bxe7!
    • 1.Qg3+?
      • 1...Kh5
        • 2.Qg4#
      • 1...Kh7!
    • 1.Qe4+?
      • 1...Kg5
        • 2.Qg4#
      • 1...Kh5
        • 2.Qg4#
      • 1...Kg7!
    • 1.Qf4?
      • 1...Kh5
        • 2.Qg4#
      • 1...Kg7
        • 2.Qh6#
      • 1...Bg7
        • 2.Qf5#
      • 1...Ba3
        • 2.Qh6#
      • 1...Bb4
        • 2.Qh6#
      • 1...Bc5
        • 2.Qh6#
      • 1...Bd6
        • 2.Qh6#
      • 1...Bh6
        • 2.Qxh6#
      • 1...Be7
        • 2.Qh6#
      • 1...Kh7!
    • 1.Qh5+?
      • 1...Kg7
        • 2.Sf5#
        • 2.Qh6#
      • 1...Kxh5!
  • Keys
    • 1.Qh3!
      • 1...Kg5
        • 2.Qg4#
      • 1...Kg7
        • 2.Qh6#
      • 1...Bh6
        • 2.Qxh6#
      • 1...Bg7
        • 2.Qf5#
      • 1...Ba3
        • 2.Qh6#
      • 1...Bb4
        • 2.Qh6#
      • 1...Bc5
        • 2.Qh6#
      • 1...Bd6
        • 2.Qh6#
      • 1...Be7
        • 2.Qh6#

There are these versions: 6004, 227624

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(B)
    • B(b);N_GUARD::QAR1(B)
    • B(b);N_GUARD::QAR1(B),XB(b)
    • B(b);N_GUARD,SBLOCK::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::S(A)
      • Refutation
        • B(b);XS(E)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);P-FLIGHT::QAB1(B)
        • B(b);SBLOCK::QAB1(B)
        • B(b);N_GUARD::QAR1(B)
        • B(b);N_GUARD::QAR1(B),XB(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);P-FLIGHT::QAB1(B)
      • B(b);N_GUARD::QAR1(B),XB(b)
      • B(b);SBLOCK::QAB1(B)
      • B(b);N_GUARD::QAR1(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).