Problem Display
PID: 4651 (1K2b2n/5p2/1Q3P1p/1ppN2p1/1Nk2pR1/R7/3P1p2/3B1q2 w - - 0 1)

Rowland, Frideswide F (Mrs TB, nee Beechey)

Mirror of American Sports, 1885

1K2b2n/5p2/1Q3P1p/1ppN2p1/1Nk2pR1/R7/3P1p2/3B1q2

#2

9 + 11


2794 Terms & Themes of Chess Problems 1907

SOLUTION


  • SOUND
  • Sets
    • 1...cxb4
      • 2.Se3#
  • Tries
    • 1.Se3+?
      • 1...Kxb4
        • 2.Ra4#
        • 2.Qa5#
      • 1...Kd4!
    • 1.d4?
      • threat
        • 2.Qxc5#
      • 1...cxb4
        • 2.Qc5#
      • 1...cxd4
        • 2.Bb3#
      • 1...Kxd4!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Se2#
        • 2.Sg2#
        • 2.Sfd3#
        • 2.Sh3#
        • 2.Sfd5#
        • 2.Sh5#
        • 2.Se6#
        • 2.Sg6#
      • 1...Kxb4
        • 2.Ra4#
      • 1...Kd4
        • 2.Sfd3#
        • 2.Sg6#
      • 1...Qxd1
        • 2.Se2#
      • 1...cxb4
        • 2.Bb3#
      • 1...gxf4
        • 2.Rxf4#
      • 1...Qe2
        • 2.Sxe2#
      • 1...Qg2
        • 2.Sxg2#
      • 1...Qd3
        • 2.Sfxd3#
      • 1...Qh3
        • 2.Sxh3#
      • 1...Qe1
        • 2.Se2#
      • 1...Qg1
        • 2.Sg2#
      • 1...Qh1
        • 2.Sg2#
      • 1...Bc6
        • 2.Sfd5#
      • 1...Bd7
        • 2.Se6#
      • 1...Sg6
        • 2.Sxg6#
      • 1...h5
        • 2.Sxh5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • P(f);SBLOCK,XS(D)::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(B);N_PINP(d)
      • Threat
        • QAR1(G),XP(f)
      • Vars
        • P(f);XS(D)::QAR1(G)
        • P(f);XP(B)::B(A)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(d),XP(B)
  • Actual
    • S(F);XP(d)
    • Threat
      • DUALS(8)
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINP(e),XS(D)::R1(C)
      • Q(a);XB(A)::R(E)+S(F)
      • P(f);SBLOCK,XS(D)::B(A)
      • P(g);OGATE,P_SPINP(g),XS(F)::R(E),XP(g)
      • Q(a);::R(E)+S(F),XQ(a)
      • Q(a);::R(E)+S(F)
      • B(j);::R(E)+S(F)
      • S(k);::R(E)+S(F),XS(k)
      • P(h);::R(E)+S(F),XP(h)


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).