Problem Display
PID: 4566 (5b2/7r/5p2/8/1B1P3Q/5K2/3NBP2/4k3 w - - 0 1)

Shinkman, William Anthony

Brentano's Chess Monthly, 1880

5b2/7r/5p2/8/1B1P3Q/5K2/3NBP2/4k3

#2

7 + 4


15 British Chess Magazine 1911
1842 The White King 1914
3360 Simple Two-move Themes 1924
3925 The Golden Argosy 1929
887 Mate in Two Moves 1931
3310 2345 Chess Problems 1997

SOLUTION


  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qh1#
    • 1...Rb7
      • 2.Qh1#
    • 1...Rc7
      • 2.Qh1#
    • 1...Rd7
      • 2.Qh1#
    • 1...Re7
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sc4#
      • 2.Se4#
      • 2.Qh1#
    • 1...Rf7
      • 2.Qh1#
    • 1...Bh6
      • 2.Qh1#
    • 1...Bg7
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sc4#
      • 2.Se4#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Sb1#
        • 2.Sf1#
        • 2.Sb3#
        • 2.Sc4#
        • 2.Se4#
      • 1...Rc7
        • 2.Sc4#
        • 2.Qh1#
      • 1...Bh6
        • 2.Qh1#
      • 1...Bb4!
    • 1.Qxh7?
      • threat
        • 2.Qb1#
        • 2.Qh1#
      • 1...Bh6
        • 2.Qb1#
      • 1...f5
        • 2.Qh1#
      • 1...Bxb4!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Sf3#
      • 1...Re7+
        • 2.Se4#
      • 1...Bh6+
        • 2.f4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::QAR(G)
    • B(d);S_CUTR(c)::QAR(G)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(5)
      • Vars
        • B(d);S_CUTR(c)::QAR(G)
      • Refutation
        • B(d);
    • Try
      • Q(G);XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::QAR(G)
        • P(b);::QAR(G)
      • Refutation
        • B(d);XB(E)
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • B(E)+S(A),DCHECK
    • Vars
      • R(c);CHECK,S_CUTB(d)::B(E)+S(A)
      • B(d);CHECK,S_CUTR(c)::QAB(G)+P(C)


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).