MESON Chess Problem Database

Problem Display
PID: 274511 (8/3pN2p/7p/1p1Pk2P/1Q1p2pB/3K4/4NP2/8 w - - 0 1)

Zilahi, Zoltan

Die Schwalbe, 1933

8/3pN2p/7p/1p1Pk2P/1Q1p2pB/3K4/4NP2/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.f4#
    • 1...d6
      • 2.Qxd4#
  • Tries
    • 1.Sg1?
      • 1...Kf4
        • 2.Qd6#
        • 2.Qxd4#
      • 1...d6
        • 2.Qxd4#
      • 1...g3!
    • 1.Sg3?
      • 1...d6
        • 2.Qxd4#
      • 1...Kf4!
    • 1.Bg5?
      • 1...g3
        • 2.f4#
      • 1...d6
        • 2.Qxd4#
      • 1...hxg5!
    • 1.Qc5?
      • 1...g3
        • 2.f4#
      • 1...d6
        • 2.Qxd4#
      • 1...b4!
  • Keys
    • 1.Sxd4!
      • 1...Kf4
        • 2.Qd6#
      • 1...g3
        • 2.Sf3#
      • 1...d6
        • 2.Sdc6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::P(B)
    • P(f);SBLOCK::QAB1(D),XP(a)
  • Tries
    • Try
      • S(A);
      • Vars
        • P(f);SBLOCK::QAB1(D),XP(a)
      • Refutation
        • P(b);
    • Try
      • S(A);
      • Vars
        • P(f);SBLOCK::QAB1(D),XP(a)
      • Refutation
        • K(d);P_SPINP(a),S_FLIGHT
    • Try
      • B(E);
      • Vars
        • P(b);N_GUARD::P(B)
        • P(f);SBLOCK::QAB1(D),XP(a)
      • Refutation
        • P(e);XB(E)
    • Try
      • Q(D);
      • Vars
        • P(b);N_GUARD::P(B)
        • P(f);SBLOCK::QAB1(D),XP(a)
      • Refutation
        • P(c);
  • Actual
    • S(A);XP(a)
    • Vars
      • K(d);N_GUARD,S_FLIGHT::QAB(D)
      • P(b);N_GUARD::S(A)
      • P(f);N_GUARD::S(A)
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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).