MESON Chess Problem Database

Problem Display
PID: 23158 (8/8/8/7Q/8/6B1/5Pkn/1K1R4 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/8/8/7Q/8/6B1/5Pkn/1K1R4

#2

5 + 2

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Qh1#
    • 1...Sg4
      • 2.Qh1#
  • Tries
    • 1.Ka1?
      • 1...Sg4
        • 2.Qh1#
      • 1...Sf3
        • 2.Qh1#
      • 1...Sf1!
    • 1.Kc1?
      • 1...Sg4
        • 2.Qh1#
      • 1...Sf3
        • 2.Qh1#
      • 1...Sf1!
    • 1.Ka2?
      • 1...Sg4
        • 2.Qh1#
      • 1...Sf3
        • 2.Qh1#
      • 1...Sf1!
    • 1.Kb2?
      • 1...Sg4
        • 2.Qh1#
      • 1...Sf3
        • 2.Qh1#
      • 1...Sf1!
    • 1.Kc2?
      • 1...Sg4
        • 2.Qh1#
      • 1...Sf3
        • 2.Qh1#
      • 1...Sf1!
    • 1.Rc1?
      • 1...Sg4
        • 2.Qh1#
      • 1...Sf3
        • 2.Qh1#
      • 1...Sf1!
    • 1.Re1?
      • 1...Sg4
        • 2.Qh1#
      • 1...Sf3
        • 2.Qh1#
      • 1...Sf1!
  • Keys
    • 1.Rh1!
      • 1...Kxh1
        • 2.Qxh2#
      • 1...Sf1
        • 2.Qd5#
      • 1...Sf3
        • 2.Qh3#
      • 1...Sg4
        • 2.Qd5#

Anticipated by 54646(1955)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,SBLOCK::QAB1(E)
    • S(b);OGATE::QAB1(E)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);OGATE::QAB1(E)
        • S(b);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);OGATE::QAB1(E)
        • S(b);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(b);OGATE::QAB1(E)
        • S(b);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);OGATE::QAB1(E)
        • S(b);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(b);OGATE::QAB1(E)
        • S(b);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • R(B);
      • Vars
        • S(b);OGATE::QAB1(E)
        • S(b);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • R(B);
      • Vars
        • S(b);OGATE::QAB1(E)
        • S(b);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • S(b);
  • Actual
    • R(B);
    • Vars
      • K(a);P_SPINS(b),S_FLIGHT,XR(B)::QAR1(E),XS(b)
      • S(b);N_GUARD::QAB(E)
      • S(b);SBLOCK::QAB1(E)
HTML5 logo

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).