Problem Display
PID: 149071 (8/8/1n6/1r6/pP1R1P2/2k5/P1N5/bQ3K2 w - - 0 1)

Gevers, Raymond

Good Companions (May Meredith Ty.), 1918

8/8/1n6/1r6/pP1R1P2/2k5/P1N5/bQ3K2

#2

7 + 5


SOLUTION


  • SOUND
  • Sets
    • 1...a3
      • 2.Qb3#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Sxb5#
        • 2.Rd3#
        • 2.Qxa1#
      • 1...Rxb4
        • 2.Rd3#
        • 2.Qxb4#
      • 1...Ra5
        • 2.Rd3#
        • 2.Qxa1#
      • 1...Rc5
        • 2.Rd3#
        • 2.Qxa1#
      • 1...Rd5
        • 2.Qxa1#
      • 1...Re5
        • 2.Rd3#
        • 2.Qxa1#
      • 1...Rf5
        • 2.Rd3#
        • 2.Qxa1#
      • 1...Rg5
        • 2.Rd3#
        • 2.Qxa1#
      • 1...Rh5
        • 2.Rd3#
        • 2.Qxa1#
      • 1...Bb2
        • 2.Sxb5#
        • 2.Qd3#
      • 1...Sc4
        • 2.Sxb5#
        • 2.Rd3#
      • 1...Kxd4!
    • 1.Se3?
      • threat
        • 2.Rd3#
        • 2.Qxa1#
      • 1...Rxb4
        • 2.Rd3#
        • 2.Qxb4#
      • 1...Rd5
        • 2.Qxa1#
      • 1...Bb2
        • 2.Qd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Kxd4!
    • 1.Rd3+?
      • 1...Kc4
        • 2.Sa3#
        • 2.Se3#
      • 1...Kxd3!
  • Keys
    • 1.Se1!
      • threat
        • 2.Qxa1#
      • 1...Kxd4
        • 2.Qd3#
      • 1...Rxb4
        • 2.Qxb4#
      • 1...Bb2
        • 2.Qd3#
      • 1...Sc4
        • 2.Rd3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::QAR1(A)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • R(d);::QAB(A),XB(a)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::QAB(A),XB(a)
        • B(a);SBLOCK::QAR1(A)
        • S(e);::R1(F)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • R(F);CHECK
      • Refutation
        • K(b);P-FLIGHT,XR(F)
  • Actual
    • S(D);
    • Threat
      • QAB(A),XB(a)
    • Vars
      • K(b);S_FLIGHT,XR(F)::QAR1(A)
      • R(d);OGATE,XP(E)::QAB1(A),XR(d)
      • B(a);SBLOCK::QAR1(A)
      • S(e);SBLOCK::R1(F)


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).