MESON Chess Problem Database

Problem Display
PID: 154373 (3Q4/6bp/r1p5/1P4P1/2P1kP2/2p4N/p1Npp1PK/1B6 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Aarsskrift for DSK, 1935

3Q4/6bp/r1p5/1P4P1/2P1kP2/2p4N/p1Npp1PK/1B6

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...cxb5
      • 2.Qd5#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Qe7+?
      • 1...Kf5
        • 2.Se3#
      • 1...Be5
        • 2.Qxh7#
      • 1...Kd3!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qxh7#
      • 1...Kd3
        • 2.Sf2#
      • 1...Kf5
        • 2.Se3#
      • 1...cxb5
        • 2.Qd5#
      • 1...c5
        • 2.Qd5#
      • 1...h5
        • 2.Qh7#
      • 1...h6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(g);N_GUARD,XP(H)::QAB1(J)
    • P(g);N_GUARD::QAB1(J)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);S_FLIGHT::B(A)+S(B),DCHECK
        • B(h);OGATE,P_PINP(G),P_SPINB(h)::QAB(J),XP(i)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(J);
    • Threat
      • QAB(J),XP(i)
    • Vars
      • K(e);S_FLIGHT::S(E)
      • K(e);S_FLIGHT::B(A)+S(B),DCHECK
      • P(g);N_GUARD,XP(H)::QAB1(J)
      • P(g);N_GUARD::QAB1(J)
      • P(i);::QAB(J)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).