MESON Chess Problem Database

Problem Display
PID: 144384 (4R3/3p2rn/3p3Q/4N2P/BBprk1bR/7N/3p3P/6bK w - - 0 1)

Boros, Sandor

Magyar Sakkvilag, 1931

4R3/3p2rn/3p3Q/4N2P/BBprk1bR/7N/3p3P/6bK

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qf4#
    • 1...d5
      • 2.Qf4#
  • Tries
    • 1.Sxd7+?
      • 1...Kd3
        • 2.Qxd2#
      • 1...Kf3
        • 2.Bd1#
      • 1...Kd5
        • 2.Sb6#
        • 2.Qxd6#
      • 1...Kf5
        • 2.Qe6#
      • 1...Re7!
    • 1.Bc2+?
      • 1...Kd5
        • 2.Qxd6#
      • 1...Rd3!
  • Keys
    • 1.Sf7+!
      • 1...Kd3
        • 2.Qxd2#
      • 1...Kf3
        • 2.Bd1#
      • 1...Kd5
        • 2.Qxd6#
      • 1...Kf5
        • 2.Bxd7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(d);SBLOCK::QAR1(I)
    • P(g);SBLOCK::QAR1(I)
  • Tries
    • Try
      • S(G);CHECK,XP(h)
      • Vars
        • K(e);N_SPINB(f),S_FLIGHT::QAR1(I),XP(b)
        • K(e);N_SPINB(f),S_FLIGHT::B(D)
        • K(e);N_SPINB(f),S_FLIGHT::QAB1(I)
      • Refutation
        • R(i);P_SPINR(i)
    • Try
      • B(D);CHECK
      • Vars
        • K(e);N_SPINB(f),S_FLIGHT::QAR1(I),XP(g)
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • S(G);CHECK
    • Vars
      • K(e);N_SPINB(f),S_FLIGHT::QAR1(I),XP(b)
      • K(e);N_SPINB(f),S_FLIGHT::B(D)
      • K(e);N_SPINB(f),S_FLIGHT::QAR1(I),XP(g)
      • K(e);N_SPINB(f),S_FLIGHT::B(D),XP(h)
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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).