MESON Chess Problem Database

Problem Display
PID: 175767 (3N2Q1/4p3/5p2/R1nN1b1R/2p1kP2/2P5/B1Kn2P1/8 w - - 0 1)

Allen, JJ

San Francisco Chronicle, 1898

3N2Q1/4p3/5p2/R1nN1b1R/2p1kP2/2P5/B1Kn2P1/8

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Keys
    • 1.Qg3!
      • 1...Kxd5+
        • 2.Qd3#
      • 1...Bh3
        • 2.Qe1#
        • 2.Qe3#
      • 1...Bg4
        • 2.Qe3#
      • 1...Be6
        • 2.Qe1#
        • 2.Qe3#
      • 1...Bg6
        • 2.Qe1#
        • 2.Qe3#
      • 1...Bd7
        • 2.Qe1#
        • 2.Qe3#
      • 1...Bh7
        • 2.Qe1#
        • 2.Qe3#
      • 1...Bc8
        • 2.Qe1#
        • 2.Qe3#
      • 1...Sb1
        • 2.Qf3#
      • 1...Sf1
        • 2.Qf3#
      • 1...Sdb3
        • 2.Qf3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Scb3
        • 2.Qe1#
        • 2.Qe3#
      • 1...Sd3
        • 2.Qe3#
      • 1...Sa4
        • 2.Qe1#
        • 2.Qe3#
      • 1...Sa6
        • 2.Qe1#
        • 2.Qe3#
      • 1...Se6
        • 2.Qe1#
        • 2.Qe3#
      • 1...Sb7
        • 2.Qe1#
        • 2.Qe3#
      • 1...Sd7
        • 2.Qe1#
        • 2.Qe3#
      • 1...e5
        • 2.Sxf6#
      • 1...e6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(J);
    • Vars
      • K(c);CHECK,P_SPINB(e),P_SPINP(b),P_SPINS(d),S_FLIGHT,XS(G)::QAR2(J)
      • B(e);::QAR1(J)
      • S(a);N_GUARD::QAB1(J)
      • S(a);N_GUARD::QAB1(J),XS(a)
      • S(d);::QAR1(J)
      • P(g);N_GUARD::S(G),XP(f)
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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).