MESON Chess Problem Database

Problem Display
PID: 6216 (7K/7B/1B6/Np2p1p1/1Pp4b/P1kp1Q1r/R3Pp1p/8 w - - 0 1)

George, R

Z, 1928

7K/7B/1B6/Np2p1p1/1Pp4b/P1kp1Q1r/R3Pp1p/8

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qf6#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qc1#
        • 2.Qd2#
        • 2.Qxe5#
      • 1...f1Q
        • 2.Qd2#
        • 2.Qxe5#
      • 1...f1S
        • 2.Qc1#
        • 2.Qxe5#
      • 1...f1R
        • 2.Qd2#
        • 2.Qxe5#
      • 1...h1Q
        • 2.Qd2#
        • 2.Qxe5#
      • 1...h1R
        • 2.Qd2#
        • 2.Qxe5#
      • 1...Bg3
        • 2.Qc1#
        • 2.Qd2#
      • 1...e4
        • 2.Bd4#
        • 2.Qc1#
        • 2.Qd2#
        • 2.Qd4#
      • 1...Rxe3!
  • Keys
    • 1.Bxd3!
      • threat
        • 2.Rc2#
      • 1...Bg3+
        • 2.Bh7#
      • 1...cxd3
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(i);OGATEB::QAB(D)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(3)
      • Refutation
        • R(e);N_SPINP(d),XQ(D)
  • Actual
    • B(H);XP(d)
    • Threat
      • R1(A)
    • Vars
      • B(g);CHECK,S_CUTR(e)::QAR(D)+B(H)
      • P(f);OGATEB,P_SPINP(f),XB(H)::QAR(D)
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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).