MESON Chess Problem Database

Problem Display
PID: 70820 (8/1p5p/1p2Q2p/pP2b2P/K1p1k1p1/2P1P1P1/8/1N2R2N w - - 0 1)

Servais, Albert

2nd HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1940

8/1p5p/1p2Q2p/pP2b2P/K1p1k1p1/2P1P1P1/8/1N2R2N

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qf5#
    • 1...Kf3
      • 2.Qd5#
  • Tries
    • 1.Ka3?
      • 1...Kd3
        • 2.Qf5#
      • 1...Kf3
        • 2.Qd5#
      • 1...a4!
    • 1.Sa3?
      • 1...Kf3
        • 2.Qd5#
      • 1...Kd3!
    • 1.Qxe5+?
      • 1...Kd3
        • 2.Qf5#
      • 1...Kf3
        • 2.Qd5#
      • 1...Kxe5!
  • Keys
    • 1.Qe7!
      • 1...Kd3
        • 2.Qxh7#
      • 1...Kf3
        • 2.Qxb7#
      • 1...Kd5
        • 2.e4#
      • 1...Kf5
        • 2.e4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(e),S_FLIGHT::QAB(J)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Vars
        • K(b);N_SPINB(e),S_FLIGHT::QAB(J)
      • Refutation
        • P(d);
    • Try
      • S(A);
      • Vars
        • K(b);N_SPINB(e),S_FLIGHT::QAB(J)
      • Refutation
        • K(b);N_SPINB(e),S_FLIGHT
    • Try
      • Q(J);CHECK,XB(e)
      • Vars
        • K(b);S_FLIGHT::QAB(J)
      • Refutation
        • K(b);P-FLIGHT,XQ(J)
  • Actual
    • Q(J);
    • Vars
      • K(b);N_SPINB(e),S_FLIGHT::QAB(J),XP(i)
      • K(b);N_SPINB(e),S_FLIGHT::QAB(J),XP(h)
      • K(b);N_SPINB(e),OGATE,S_FLIGHT::P(E)
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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).