MESON Chess Problem Database

Problem Display
PID: 190269 (b1BRQR2/K3P2p/5b2/2p2Nn1/4kP2/2P5/2pP2PB/2N1n3 w - - 0 1)

Karge, Fritz

Schweizerische Schachzeitung, 1983

b1BRQR2/K3P2p/5b2/2p2Nn1/4kP2/2P5/2pP2PB/2N1n3

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc3
      • 2.Sg3#
    • 1...Bd4
      • 2.Sg3#
    • 1...Be5
      • 2.Sg3#
    • 1...Bxe7
      • 2.Sg3#
    • 1...Bg7
      • 2.Sg3#
    • 1...Bh8
      • 2.Sg3#
    • 1...Bd5
      • 2.Sd6#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Sef3
      • 2.d3#
  • Tries
    • 1.Qa4+?
      • 1...Bd4
        • 2.Sg3#
      • 1...c4!
    • 1.Qb5?
      • threat
        • 2.Qe2#
      • 1...Sxg2
        • 2.Qd3#
      • 1...Bd4
        • 2.Sg3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...c4
        • 2.Sd6#
      • 1...Se6!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qe2#
      • 1...Sxg2
        • 2.d3#
      • 1...Se6
        • 2.Sd6#
      • 1...Bd4
        • 2.Sg3#
      • 1...Sef3
        • 2.d3#
      • 1...Sgf3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • B(f);XP(E)::S(G)
    • B(f);::S(G)
    • B(f);P_SPINB(f),XP(I)::S(G)
    • B(h);SBLOCK::S(G)
    • B(h);N_GUARD::QAB(L),XB(h)
    • S(a);N_GUARD::P(B)
  • Tries
    • Try
      • Q(L);CHECK
      • Vars
        • B(f);P_SPINB(f)::S(G)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(L);
      • Threat
        • QAR2(L)
      • Vars
        • S(a);N_GUARD,XP(C)::QAB1(L)
        • B(f);::S(G)
        • S(a);N_GUARD::QAB1(L),XS(a)
        • P(d);::S(G)
      • Refutation
        • S(e);
  • Actual
    • Q(L);
    • Threat
      • QAR2(L)
    • Vars
      • S(a);N_GUARD,XP(C)::P(B)
      • S(e);::S(G)
      • B(f);::S(G)
      • S(a);N_GUARD::P(B)
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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).