MESON Chess Problem Database

Problem Display
PID: 195156 (4B1KB/Q1N1p1N1/P1p1r1p1/2RbkpR1/4p3/4p3/4P3/8 w - - 0 1)

McArthur, William Johnstone

Brisbane Courier, 1918

4B1KB/Q1N1p1N1/P1p1r1p1/2RbkpR1/4p3/4p3/4P3/8

#2

10 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sxf5#
      • 2.Sgxe6#
    • 1...Kf6
      • 2.Sgxe6#
    • 1...Rd6+
      • 2.Sge6#
  • Tries
    • 1.Scxe6?
      • 1...Kd6
        • 2.Qb8#
        • 2.Qc7#
      • 1...Kf6!
    • 1.Rxd5+?
      • 1...Kf4
        • 2.Scxe6#
        • 2.Sgxe6#
      • 1...Kf6
        • 2.Sgxe6#
        • 2.Rxg6#
      • 1...cxd5!
  • Keys
    • 1.Qb8!
      • 1...Rd6+
        • 2.Sge6#
      • 1...Rf6+
        • 2.Sce6#
      • 1...Kd4
        • 2.Sgxe6#
      • 1...Kf4
        • 2.Scxe6#
      • 1...Kd6
        • 2.Scxe6#
      • 1...Kf6
        • 2.Sgxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINB(c),N_SPINP(e),S_FLIGHT::B(J)+S(G),XR(g)
    • R(g);CHECK,SBLOCK::B(J)+S(G)
  • Tries
    • Try
      • S(F);P_SPINS(F),XR(g)
      • Refutation
        • K(d);N_SPINB(c),N_SPINP(e),S_FLIGHT
    • Try
      • R(B);CHECK,XB(c)
      • Refutation
        • P(f);XR(B)
  • Actual
    • Q(E);
    • Vars
      • R(g);CHECK,SBLOCK::B(J)+S(G)
      • R(g);CHECK,SBLOCK::QAB(E)+S(F)
      • K(d);N_SPINB(c),N_SPINP(e),S_FLIGHT::B(J)+S(G),DCHECK,XR(g)
      • K(d);N_SPINB(c),N_SPINP(e),S_FLIGHT::QAB(E)+S(F),DCHECK,XR(g)
      • K(d);N_SPINB(c),N_SPINP(e),S_FLIGHT::QAB(E)+S(F),XR(g)
      • K(d);N_SPINB(c),N_SPINP(e),S_FLIGHT::B(J)+S(G),XR(g)
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).