MESON Chess Problem Database

Problem Display
PID: 23366 (8/8/8/8/b2N4/2nQ4/8/K1k5 w - - 0 1)

Oleinik, Aleksandr Petrovich

Prioskaya Pravda, 1989

8/8/8/8/b2N4/2nQ4/8/K1k5

#2

3 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qe3#
    • 1...Bc2
      • 2.Qxc2#
    • 1...Bb3
      • 2.Sxb3#
    • 1...Bb5
      • 2.Sb3#
      • 2.Qc2#
    • 1...Bc6
      • 2.Sb3#
      • 2.Qc2#
    • 1...Bd7
      • 2.Sb3#
      • 2.Qc2#
    • 1...Be8
      • 2.Sb3#
      • 2.Qc2#
    • 1...Sb1
      • 2.Se2#
    • 1...Sd1
      • 2.Se2#
    • 1...Sa2
      • 2.Se2#
    • 1...Se2
      • 2.Sxe2#
    • 1...Se4
      • 2.Se2#
    • 1...Sb5
      • 2.Se2#
    • 1...Sd5
      • 2.Se2#
  • Tries
    • 1.Qxc3+?
      • 1...Bc2
        • 2.Qxc2#
      • 1...Kd1!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qd2#
      • 1...Sb1
        • 2.Qxb1#
      • 1...Se4
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • B(c);SBLOCK::QAB(B)
    • B(c);N_GUARD::QAR1(B),XB(c)
    • B(c);N_GUARD::S(C),XB(c)
    • S(b);N_GUARD::S(C)
    • S(b);N_GUARD::S(C),XS(b)
  • Tries
    • Try
      • Q(B);CHECK,XS(b)
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(B),XB(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • S(b);N_GUARD::QAR1(B),XS(b)
      • S(b);N_GUARD::QAR1(B)
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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).