MESON Chess Problem Database

Problem Display
PID: 198616 (2q1Nb2/7n/3p2N1/1PBkpQ2/1P6/4P2n/2pP4/2K5 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Problemskak, 2011

2q1Nb2/7n/3p2N1/1PBkpQ2/1P6/4P2n/2pP4/2K5

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Qd3#
  • Tries
    • 1.Sf4+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Sxf4!
    • 1.Sc7+?
      • 1...Kc4
        • 2.Qxc2#
      • 1...Qxc7!
  • Keys
    • 1.d3!
      • threat
        • 2.e4#
      • 1...Qxf5
        • 2.Sc7#
      • 1...Qxc5
        • 2.Qf7#
      • 1...dxc5
        • 2.Qxe5#
      • 1...Bh6
        • 2.Se7#
      • 1...Sf2
        • 2.Sf4#
      • 1...S3g5
        • 2.Sf4#
      • 1...S7g5
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • Q(g);SBLOCK::QAR2(G)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAB1(G)
      • Refutation
        • S(b);XS(H)
    • Try
      • S(I);CHECK
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(G),XP(a)
      • Refutation
        • Q(g);XS(I)
  • Actual
    • P(B);
    • Threat
      • P(C)
    • Vars
      • Q(g);N_GUARD,N_SPINP(d),XQ(G)::S(I)
      • Q(g);N_GUARD,XB(F)::QAB(G)
      • P(e);N_GUARD,XB(F)::QAR1(G),XP(d)
      • B(h);N_GUARD,P_PINP(C)::S(H)
      • S(b);N_GUARD::S(H)
      • S(f);N_GUARD::S(I)
      • S(f);N_GUARD::S(I),XS(f)
HTML5 logo

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).