MESON Chess Problem Database

Problem Display
PID: 92851 (8/2N5/1p6/1p1pQ3/1nk2p2/Bp2bN2/nP2Pp2/5K2 w - - 0 1)

Asplund, Per Ivan Rune

Tidskrift for Schack, 1953

8/2N5/1p6/1p1pQ3/1nk2p2/Bp2bN2/nP2Pp2/5K2

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qxd5#
    • 1...Bc1
      • 2.Qd4#
    • 1...Bd2
      • 2.Qd4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bc5
      • 2.Sd2#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sc2
      • 2.Qxd5#
    • 1...Sd3
      • 2.Qxd5#
    • 1...Sa6
      • 2.Qxd5#
    • 1...Sc6
      • 2.Qxd5#
    • 1...d4
      • 2.Qxb5#
  • Tries
    • 1.Sd2+?
      • 1...Kc5
        • 2.Qxd5#
      • 1...Bxd2!
    • 1.Qxe3?
      • threat
        • 2.Sd2#
        • 2.Se5#
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Sc2
        • 2.Sd2#
        • 2.Se5#
        • 2.Qd3#
      • 1...Sd3
        • 2.Sd2#
        • 2.Qd4#
        • 2.Qxd3#
        • 2.exd3#
      • 1...Sc6
        • 2.Sd2#
        • 2.Qd3#
      • 1...fxe3!
  • Keys
    • 1.Se8!
      • 1...Kc5
        • 2.Qc7#
      • 1...Bc1
        • 2.Qd4#
      • 1...Bd2
        • 2.Qd4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bc5
        • 2.Sd2#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc2
        • 2.Sd6#
      • 1...Sd3
        • 2.Sd6#
      • 1...Sa6
        • 2.Sd6#
      • 1...Sc6
        • 2.Sd6#
      • 1...d4
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 6
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(f);P-FLIGHT,P_SPINP(i),P_SPINS(e)::QAR1(F),XP(i)
    • B(d);N_GUARD::QAR1(F)
    • B(d);N_GUARD::QAR1(F),XB(d)
    • B(d);N_GUARD,SBLOCK::S(E)
    • S(a);N_GUARD::QAR1(F)
    • S(a);N_GUARD::QAR1(F),XS(a)
    • S(e);N_GUARD::QAB1(F),XP(i)
    • P(i);OGATE::QAB1(F),XP(h)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINP(i),P_SPINS(e)::QAR1(F),XP(i)
      • Refutation
        • B(d);XS(E)
    • Try
      • Q(F);XB(d)
      • Threat
        • DUALS(3)
      • Vars
        • P(i);::QAR1(F),XP(i)
      • Refutation
        • P(g);XQ(F)
  • Actual
    • S(G);
    • Vars
      • K(f);P-FLIGHT,P_SPINP(i),P_SPINS(e)::QAR2(F)
      • B(d);N_GUARD::QAR1(F)
      • B(d);N_GUARD::QAR1(F),XB(d)
      • B(d);N_GUARD,SBLOCK::S(E)
      • S(a);N_GUARD::QAR1(F)
      • S(a);N_GUARD::QAR1(F),XS(a)
      • S(e);::S(G)
      • P(i);::S(G)
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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).