Problem Display
PID: 258850 (2N2B2/8/1p2p3/1p6/1p1kp3/1PN3P1/2K3P1/Q7 w - - 0 1)

Waterhouse, Albert F

Manchester Weekly Times, 1893

(First published on Fri May 26 1893)

2N2B2/8/1p2p3/1p6/1p1kp3/1PN3P1/2K3P1/Q7

#2

8 + 6


15239 Valois Notebooks 2022

SOLUTION


  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qg1#
  • Tries
    • 1.Sa2+?
      • 1...Kd5
        • 2.Sxb4#
      • 1...Ke3!
    • 1.Sxb5+?
      • 1...Ke3
        • 2.Qe1#
      • 1...Kd5!
    • 1.Qd1+?
      • 1...Ke3
        • 2.Qg1#
        • 2.Qd2#
      • 1...Ke5!
  • Keys
    • 1.Se7!
      • 1...Ke3
        • 2.Qg1#
      • 1...Kc5
        • 2.Sxe4#
      • 1...Ke5
        • 2.Sxb5#
      • 1...bxc3
        • 2.Qxc3#
      • 1...e3
        • 2.Sc6#
      • 1...e5
        • 2.Sf5#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_CUTP(c),S_FLIGHT::QAB(A)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::S(E),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);CHECK,XP(d)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(G);
    • Vars
      • K(b);N_GUARD,S_CUTP(c),S_FLIGHT::QAB(A)
      • K(b);N_GUARD,S_FLIGHT::S(E),XP(c)
      • K(b);N_GUARD,S_FLIGHT::QAB(A)+S(E),XP(d)
      • P(a);OGATE,P_SPINP(a),XS(E)::QAB1(A),XP(a)
      • P(c);SBLOCK::S(G)
      • P(f);N_GUARD,SBLOCK::S(G)


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).