Problem Display
PID: 208736 (8/8/3p4/1Ppk1P2/2R1pK2/3b3B/P2PN3/1Q6 w - - 0 1)

Brown, Theodore Morris

St. Louis Globe Democrat, 1875

8/8/3p4/1Ppk1P2/2R1pK2/3b3B/P2PN3/1Q6

#2

9 + 5


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qb3#
    • 1...Bxe2
      • 2.Qxe4#
    • 1...Bxc4
      • 2.Qxe4#
    • 1...e3
      • 2.Qxd3#
  • Tries
    • 1.Ra4?
      • threat
        • 2.Sc3#
      • 1...Bxe2
        • 2.Qxe4#
      • 1...Bxb5
        • 2.Qxe4#
      • 1...Bc4
        • 2.Qxe4#
      • 1...c4!
    • 1.Qc2?
      • 1...Bxe2
        • 2.Qxe4#
      • 1...Bxc4
        • 2.Qxe4#
      • 1...e3
        • 2.Qxd3#
      • 1...Bxc2!
  • Keys
    • 1.Bf1!
      • 1...Kxc4
        • 2.Qb3#
      • 1...Bxb1
        • 2.Sc3#
      • 1...Bxe2
        • 2.Qxe4#
      • 1...Bxc4
        • 2.Qxe4#
      • 1...Bc2
        • 2.Sc3#
      • 1...e3
        • 2.Qxd3#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);OGATEB,S_FLIGHT,XR(F)::QAB1(A)
    • B(a);OGATE,XS(D)::QAB1(A),XP(b)
    • B(a);OGATE,XR(F)::QAB1(A),XP(b)
    • P(b);N_GUARD::QAR2(A),XB(a)
  • Tries
    • Try
      • R(F);
      • Threat
        • S(D)
      • Vars
        • B(a);OGATE,XS(D)::QAB1(A),XP(b)
        • B(a);OGATE,XP(H)::QAB1(A),XP(b)
        • B(a);OGATE::QAB1(A),XP(b)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • B(a);OGATE,XS(D)::QAB1(A),XP(b)
        • B(a);OGATE,XR(F)::QAB1(A),XP(b)
        • P(b);N_GUARD::QAR2(A),XB(a)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • B(E);
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(F)::QAB1(A)
      • B(a);XQ(A)::S(D)
      • B(a);OGATE,XS(D)::QAB1(A),XP(b)
      • B(a);OGATE,XR(F)::QAB1(A),XP(b)
      • B(a);::S(D)
      • P(b);N_GUARD::QAR2(A),XB(a)


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).