MESON Chess Problem Database

Problem Display
PID: 184746 (4n3/rp3NN1/1b6/4P2p/4k1nQ/4Bp2/B1P5/1K2R3 w - - 0 1)

Feigl, Maximilian

Reclam-Sammlung V, 1908

4n3/rp3NN1/1b6/4P2p/4k1nQ/4Bp2/B1P5/1K2R3

#2

9 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Qh1#
  • Tries
    • 1.Sd6+?
      • 1...Kxe5
        • 2.Qe7#
      • 1...Sxd6!
    • 1.Bg1+?
      • 1...Kf4
        • 2.Bh2#
      • 1...Be3!
    • 1.Bd2+?
      • 1...Kd4
        • 2.Se6#
      • 1...Be3!
    • 1.Bf2+?
      • 1...Kf4
        • 2.Bg3#
        • 2.Qg3#
        • 2.Qg5#
      • 1...Be3!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sg5#
      • 1...Rxa2
        • 2.Qxb7#
      • 1...Bxe3
        • 2.Qb4#
      • 1...Sxe3
        • 2.Qh4#
      • 1...Sxg7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::QAB(F)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(b);N_SPINS(c),P-FLIGHT,XP(G)::QAR2(F)
      • Refutation
        • S(h);XS(H)
    • Try
      • B(E);CHECK
      • Vars
        • K(b);P-FLIGHT::B(E)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • B(E);CHECK
      • Vars
        • K(b);P-FLIGHT::S(I)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • B(E);CHECK
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • Q(F);N_PINS(c)
    • Threat
      • S(H)
    • Vars
      • R(f);N_GUARD,XB(C)::QAB(F),XP(g)
      • B(e);N_GUARD,P_SPINB(e),XB(E)::QAR(F)
      • S(c);OGATEB,P_SPINS(c),XB(E)::QAR(F)
      • S(h);N_GUARD,XS(I)::S(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).