MESON Chess Problem Database

Problem Display
PID: 244990 (1Qb5/r1N5/5p2/p1BNkp2/8/3P3P/1r2P3/2b4K w - - 0 1)

Grabowski, Kazimierz

Tidskrift for Schack, 1917

1Qb5/r1N5/5p2/p1BNkp2/8/3P3P/1r2P3/2b4K

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qxb2#
    • 1...Bg5
      • 2.Qxb2#
    • 1...Bh6
      • 2.Qxb2#
    • 1...Ba6
      • 2.Qe8#
    • 1...Bb7
      • 2.Qe8#
  • Tries
    • 1.Qb6?
      • threat
        • 2.Bd4#
        • 2.Bd6#
        • 2.Qd6#
        • 2.Qxf6#
      • 1...Rxc7
        • 2.Qd6#
      • 1...f4
        • 2.Qxf6#
      • 1...Rb4
        • 2.Bd6#
        • 2.Qd6#
        • 2.Qxf6#
      • 1...Ra6
        • 2.Bd4#
        • 2.Bd6#
      • 1...Be3
        • 2.Bd6#
        • 2.Qd6#
        • 2.Qxf6#
      • 1...Bg5
        • 2.Bd4#
        • 2.Bd6#
        • 2.Qxb2#
        • 2.Qd6#
      • 1...Be6
        • 2.Bd4#
        • 2.Bd6#
        • 2.Qd6#
        • 2.Qxe6#
      • 1...Rxb6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
      • 1...Bb7+
        • 2.Scd5#
      • 1...Kxf4
        • 2.Se6#
      • 1...Rxc7
        • 2.Qxc7#
      • 1...Bxf4
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::QAB(H),XR(b)
    • B(h);OGATE::QAR(H)
    • B(h);OGATE,P_PINS(F)::QAR(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(4)
      • Vars
        • R(g);XS(G)::QAB1(H)
        • P(e);::QAB1(H),XP(f)
      • Refutation
        • R(b);XQ(H)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • B(h);CHECK,S_CUTR(b),S_CUTR(g)::QAB(H)+S(G)
      • K(d);S_FLIGHT,XS(F)::QAB(H)+S(G),DCHECK
      • R(g);OGATE,P_SPINR(g),XS(G)::QAB(H),XR(g)
      • B(a);N_GUARD,SBLOCK,XS(F)::QAB(H),XR(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).