MESON Chess Problem Database

Problem Display
PID: 105547 (8/8/6N1/p2p4/3k4/Q7/4K1B1/8 w - - 0 1)

Kamensky, Viacheslav Ivanovich

Mat Plus, 1998

8/8/6N1/p2p4/3k4/Q7/4K1B1/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Qb4#
  • Tries
    • 1.Bh1?
      • 1...a4
        • 2.Qb4#
      • 1...Kc4!
    • 1.Bf3?
      • 1...a4
        • 2.Qb4#
      • 1...Kc4!
    • 1.Bh3?
      • 1...Ke4
        • 2.Qd3#
        • 2.Qe3#
      • 1...a4
        • 2.Qb4#
      • 1...Kc4!
    • 1.Qb3?
      • 1...a4
        • 2.Qb4#
      • 1...Kc5!
  • Keys
    • 1.Bf1!
      • 1...Kc4
        • 2.Ke3#
      • 1...Ke4
        • 2.Qd3#
      • 1...a4
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAR2(C)
  • Tries
    • Try
      • B(B);
      • Vars
        • P(b);N_GUARD::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • P(b);N_GUARD::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • P(b);N_GUARD::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);N_GUARD::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);P-FLIGHT::B(B)+K(A)
      • K(a);P-FLIGHT::QAB1(C)
      • P(b);N_GUARD::QAR2(C)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).