Problem Display
PID: 32823 (4N3/8/2p2p2/3p1P2/3k4/6P1/4P3/1QR1B2K w - - 0 1)

Huggins, Colonel AZ

Source?, 0000

4N3/8/2p2p2/3p1P2/3k4/6P1/4P3/1QR1B2K

#2

8 + 4


3500 Chess Problems by A. Z. Huggins 1872

SOLUTION


  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qd3#
  • Tries
    • 1.Bc3+?
      • 1...Kc4
        • 2.Ba1#
        • 2.Be5#
        • 2.Bxf6#
        • 2.Qb4#
      • 1...Kc5
        • 2.Ba1#
        • 2.Be5#
        • 2.Bxf6#
        • 2.Qb4#
      • 1...Ke3!
    • 1.Rd1+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc4
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke5!
    • 1.Rxc6?
      • 1...Ke3
        • 2.Qd3#
      • 1...Ke5!
    • 1.Qb4+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Ke3!
    • 1.Qb8?
      • threat
        • 2.Qf4#
      • 1...Ke4
        • 2.Qf4#
      • 1...Ke3!
  • Keys
    • 1.Rc5!
      • 1...Ke3
        • 2.Qd3#
      • 1...Kxc5
        • 2.Qb4#
      • 1...Ke5
        • 2.Bc3#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(A)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);XP(c)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT,XR(B)::QAB1(A)
      • K(a);P_SPINP(b),S_FLIGHT::B(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).