Problem Display
PID: 181864 (1Bk5/K7/3R4/3n4/4P3/8/2P1p1P1/2Q2B2 w - - 0 1)

Benedek, Erno

Pesti Naplo, 1905

1Bk5/K7/3R4/3n4/4P3/8/2P1p1P1/2Q2B2

#2

8 + 3


6490 yacpdb 2018

SOLUTION


  • SOUND
  • Sets
    • 1...e1Q
      • 2.Ba6#
    • 1...e1S
      • 2.Ba6#
    • 1...e1B
      • 2.Ba6#
    • 1...e1R
      • 2.Ba6#
  • Tries
    • 1.Bxe2?
      • threat
        • 2.Bg4#
        • 2.Ba6#
      • 1...Se3
        • 2.Ba6#
      • 1...Sb4
        • 2.Bg4#
      • 1...Sf4
        • 2.Ba6#
      • 1...Sb6
        • 2.Ba6#
      • 1...Sf6
        • 2.Ba6#
      • 1...Se7
        • 2.Ba6#
      • 1...Sc7!
    • 1.Qg5?
      • threat
        • 2.Rd8#
        • 2.Qd8#
        • 2.Qg4#
        • 2.Qf5#
        • 2.Qg8#
      • 1...exf1Q
        • 2.Rd8#
        • 2.Qd8#
      • 1...exf1R
        • 2.Rd8#
        • 2.Qd8#
      • 1...Sc7
        • 2.Rd8#
        • 2.Qd8#
      • 1...Se3
        • 2.Rd8#
        • 2.Qd8#
        • 2.Qc5#
        • 2.Qg8#
      • 1...Sf4
        • 2.Rd8#
        • 2.Qd8#
        • 2.Qc5#
        • 2.Qg8#
      • 1...Sb6
        • 2.Rd8#
        • 2.Qd8#
        • 2.Qc5#
        • 2.Qg8#
      • 1...Sf6
        • 2.Qc5#
      • 1...Se7!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qh8#
        • 2.Qb7#
      • 1...exf1Q
        • 2.Qb7#
      • 1...exf1R
        • 2.Qb7#
      • 1...Sc3
        • 2.Qxc3#
        • 2.Qb7#
      • 1...Sb4
        • 2.Qh8#
      • 1...Sb6
        • 2.Qh8#
      • 1...Sf6
        • 2.Qc3#
        • 2.Qb7#
      • 1...Sc7
        • 2.Qb7#
      • 1...Se7
        • 2.Qb7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • P(a);OGATE::B(B)
  • Tries
    • Try
      • B(B);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::B(B)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(5)
      • Vars
        • S(b);OGATE::QAR(A)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(a);XB(B)::QAB1(A)
      • S(b);::QAR(A)
      • S(b);::QAB1(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).