MESON Chess Problem Database

Problem Display
PID: 193924 (8/8/8/8/4Q3/2pK3N/2Pb1P2/3k4 w - - 0 1)

Mortriner, Lucius

Our Young People, 1916

8/8/8/8/4Q3/2pK3N/2Pb1P2/3k4

#2

5 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qh1#
      • 2.Qe2#
    • 1...Be3
      • 2.Qh1#
    • 1...Bf4
      • 2.Qh1#
    • 1...Bg5
      • 2.Qh1#
    • 1...Bh6
      • 2.Qh1#
  • Tries
    • 1.Qf3+?
      • 1...Ke1
        • 2.Qh1#
        • 2.Qe2#
      • 1...Kc1!
    • 1.Qb7?
      • 1...Ke1
        • 2.Qh1#
      • 1...Be1
        • 2.Qb1#
      • 1...Bc1
        • 2.Qh1#
      • 1...Be3
        • 2.Qh1#
      • 1...Bf4
        • 2.Qh1#
      • 1...Bg5
        • 2.Qh1#
      • 1...Bh6
        • 2.Qh1#
      • 1...Kc1!
    • 1.Qg4+?
      • 1...Ke1
        • 2.Qe2#
        • 2.Qg1#
      • 1...Kc1!
  • Keys
    • 1.Qa8!
      • 1...Kc1
        • 2.Qa1#
      • 1...Ke1
        • 2.Qh1#
      • 1...Be1
        • 2.Qa1#
      • 1...Bc1
        • 2.Qh1#
      • 1...Be3
        • 2.Qh1#
      • 1...Bf4
        • 2.Qh1#
      • 1...Bg5
        • 2.Qh1#
      • 1...Bh6
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::QAR(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAR(E)
        • B(b);N_GUARD,SBLOCK::QAR2(E)
        • B(b);N_GUARD,SBLOCK::QAR(E)
        • B(b);N_GUARD::QAR(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);P-FLIGHT::QAR2(E)
      • K(a);P-FLIGHT::QAR(E)
      • B(b);N_GUARD,SBLOCK::QAR(E)
      • B(b);N_GUARD::QAR(E)
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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).