MESON Chess Problem Database

Problem Display
PID: 174009 (3K4/2n5/1Q3Rp1/3Pk2n/8/4NP2/8/b7 w - - 0 1)

Bottacchi, Antonio

Il Secolo, 1917

3K4/2n5/1Q3Rp1/3Pk2n/8/4NP2/8/b7

#2

6 + 5

3713 Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qxb2#
    • 1...Bd4
      • 2.Qd6#
    • 1...Sxd5
      • 2.Sc4#
      • 2.Sg4#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Qxc7+?
      • 1...Kxf6
        • 2.Qe7#
      • 1...Kd4!
  • Keys
    • 1.Qb4!
      • 1...Se6+
        • 2.Rxe6#
      • 1...Kxf6
        • 2.Qe7#
      • 1...Sxf6
        • 2.f4#
      • 1...Sxd5
        • 2.Sg4#
      • 1...Bc3
        • 2.Qxc3#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Bd4
        • 2.Qd6#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...Sb5
        • 2.Re6#
      • 1...Sa6
        • 2.Re6#
      • 1...Sa8
        • 2.Re6#
      • 1...Se8
        • 2.Re6#
      • 1...g5
        • 2.Rf5#

Anticipated by 60823(1895)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB(D),XB(a)
    • B(a);SBLOCK::QAB1(D)
    • P(d);N_GUARD::R1(E)
  • Tries
    • Try
      • Q(D);CHECK,XS(e)
      • Vars
        • K(b);S_FLIGHT,XR(E)::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • S(e);CHECK,N_GUARD::R1(E),XS(e)
      • K(b);S_FLIGHT,XR(E)::QAB1(D)
      • S(c);N_GUARD,SBLOCK,XR(E)::P(B)
      • S(e);SBLOCK,XP(C)::S(A)
      • B(a);N_GUARD::QAB(D),XB(a)
      • B(a);SBLOCK::QAB1(D)
      • S(c);N_GUARD::QAB1(D)
      • S(c);N_GUARD::QAB1(D),XS(c)
      • S(e);N_GUARD::R1(E)
      • P(d);N_GUARD::R1(E)
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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).