Problem Display
PID: 110695 (3b1B2/1ppPn3/1N3Q2/2k2N2/K3P3/p7/P7/8 w - - 0 1)

Grinblat, Arieh

10th Place, Match: Israel - Sweden, 1958

3b1B2/1ppPn3/1N3Q2/2k2N2/K3P3/p7/P7/8

#2

8 + 6


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...cxb6
      • 2.Qc3#
    • 1...c6
      • 2.Qd4#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd4#
      • 1...b5+!
    • 1.Sa8?
      • threat
        • 2.Qc3#
      • 1...Kc4
        • 2.Qd4#
      • 1...b5+!
    • 1.Sc8?
      • threat
        • 2.Qc3#
      • 1...Kc4
        • 2.Qd4#
      • 1...b5+!
    • 1.Qb2?
      • threat
        • 2.Qb5#
      • 1...Kc6
        • 2.Qb5#
      • 1...c6
        • 2.Qd4#
        • 2.Qf2#
        • 2.Qb4#
      • 1...axb2!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Qb5#
      • 1...Kxb6!
    • 1.Qe6?
      • 1...cxb6
        • 2.Qd5#
      • 1...c6!
    • 1.Qg6?
      • 1...c6
        • 2.Qg1#
      • 1...cxb6!
  • Keys
    • 1.Qh6!
      • 1...cxb6
        • 2.Qc1#
      • 1...c6
        • 2.Qe3#

FEATURES


  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK,XS(E)::QAR2(F)
    • P(d);SBLOCK::QAB1(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR2(F)
      • Refutation
        • P(c);CHECK
    • Try
      • S(E);
      • Threat
        • QAR2(F)
      • Vars
        • K(b);N_SPINS(e),P-FLIGHT::QAR1(F)
      • Refutation
        • P(c);CHECK
    • Try
      • S(E);
      • Threat
        • QAR2(F)
      • Vars
        • K(b);N_SPINS(e),P-FLIGHT::QAR1(F)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(b);N_SPINS(e),P-FLIGHT::QAB1(F)
      • Refutation
        • P(a);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);N_SPINS(e),OGATE,P-FLIGHT::QAB1(F)
      • Refutation
        • K(b);N_SPINS(e),S_FLIGHT,XS(E)
    • Try
      • Q(F);
      • Vars
        • P(d);SBLOCK,XS(E)::QAR1(F)
      • Refutation
        • P(d);
    • Try
      • Q(F);
      • Vars
        • P(d);SBLOCK::QAB(F)
      • Refutation
        • P(d);XS(E)
  • Actual
    • Q(F);
    • Vars
      • P(d);SBLOCK,XS(E)::QAR(F)
      • P(d);SBLOCK::QAB(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).