MESON Chess Problem Database

Problem Display
PID: 161252 (8/3K4/3N1N1p/4k2P/1p1p2pP/1P2n1P1/Q4P2/8 w - - 0 1)

Amirov, Talip Khasanovich

Hahodkinsky working, 1965

8/3K4/3N1N1p/4k2P/1p1p2pP/1P2n1P1/Q4P2/8

#2

9 + 6

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Sxg4#
    • 1...d3
      • 2.Qa1#
      • 2.Qb2#
  • Tries
    • 1.Sxg4+?
      • 1...Kd5
        • 2.Qa5#
      • 1...Sxg4!
    • 1.Qe2?
      • 1...d3
        • 2.Qb2#
      • 1...Kxf6!
    • 1.Qa5+?
      • 1...Sd5
        • 2.Sxg4#
      • 1...Kxf6!
    • 1.fxe3?
      • 1...dxe3
        • 2.Qa1#
        • 2.Qb2#
      • 1...d3
        • 2.Qa1#
        • 2.Qb2#
      • 1...Kxf6!
  • Keys
    • 1.Qa8!
      • 1...Kxf6
        • 2.Qh8#
      • 1...d3
        • 2.Qa1#
      • 1...Sc4
        • 2.Sxg4#
      • 1...Sd1
        • 2.Sxg4#
      • 1...Sf1
        • 2.Sxg4#
      • 1...Sc2
        • 2.Sxg4#
      • 1...Sg2
        • 2.Sxg4#
      • 1...Sd5
        • 2.Sxg4#
      • 1...Sf5
        • 2.Sxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::S(H),XP(d)
  • Tries
    • Try
      • S(H);CHECK,XP(d)
      • Vars
        • K(e);P-FLIGHT::QAR(A)
      • Refutation
        • S(a);XS(H)
    • Try
      • Q(A);P_PINS(a)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • K(e);N_SPINS(a),S_FLIGHT,XS(H)
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);P_SPINS(a)::S(H),XP(d)
      • Refutation
        • K(e);S_FLIGHT,XS(H)
    • Try
      • P(B);XS(a)
      • Refutation
        • K(e);S_FLIGHT,XS(H)
  • Actual
    • Q(A);
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(H)::QAB(A)
      • P(c);OGATEB::QAB(A)
      • S(a);N_GUARD::S(H),XP(d)
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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).