Problem Display
PID: 119813 (8/3p4/8/pp6/k7/8/2P4K/2B1Q3 w - - 0 1)

Galitzky, Aleksandr Vasilevich

Deutsche Schachzeitung, 1897

8/3p4/8/pp6/k7/8/2P4K/2B1Q3

#2

4 + 4


6490 yacpdb 2009
14666 Aleksandr Galitzky - Shakhmaty Geine (Vol 1) 2010
5454 Near Snap 2013

SOLUTION


  • SOUND
  • Tries
    • 1.Bd2?
      • threat
        • 2.Qa1#
      • 1...Ka3
        • 2.Qa1#
      • 1...b4!
    • 1.Qe3?
      • threat
        • 2.Qa3#
        • 2.Qb3#
      • 1...Kb4
        • 2.Qd4#
      • 1...b4!
    • 1.Qe7?
      • threat
        • 2.Qa3#
      • 1...b4
        • 2.Qxd7#
      • 1...d6!
  • Keys
    • 1.Qd1!
      • threat
        • 2.c3#
      • 1...Kb4
        • 2.Qd4#
      • 1...b4
        • 2.Qxd7#

This anticipates 12413(1979)

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B),XP(d)
      • Refutation
        • P(d);
  • Actual
    • Q(B);
    • Threat
      • QAB(B)+P(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • P(c);OGATEB,SBLOCK::QAB(B),XP(d)


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).