MESON Chess Problem Database

Problem Display
PID: 141801 (8/2NpKn2/8/1PR5/1p1kN3/rr1p2p1/1n6/4Qb2 w - - 0 1)

Valle, Giovanni Batista

Source?, 1892

8/2NpKn2/8/1PR5/1p1kN3/rr1p2p1/1n6/4Qb2

#2

6 + 10

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Rd5#
    • 1...d6
      • 2.Se6#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Rd5#
      • 1...Kxc5
        • 2.Qe3#
      • 1...Sxd6
        • 2.Qe5#
      • 1...Be2
        • 2.Qg1#
      • 1...Bg2
        • 2.Qg1#
      • 1...d2!
  • Keys
    • 1.Sd2!
      • 1...Kxc5
        • 2.Qe3#
      • 1...Be2
        • 2.Qg1#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Ra1
        • 2.Sxb3#
      • 1...Ra2
        • 2.Sxb3#
      • 1...Ra4
        • 2.Sxb3#
      • 1...Ra5
        • 2.Sxb3#
      • 1...Ra6
        • 2.Sxb3#
      • 1...Ra7
        • 2.Sxb3#
      • 1...Ra8
        • 2.Sxb3#
      • 1...Rc3
        • 2.Rd5#
      • 1...Bg2
        • 2.Qg1#
      • 1...Bh3
        • 2.Qg1#
      • 1...Sd1
        • 2.Rc4#
      • 1...Sa4
        • 2.Rc4#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sg5
        • 2.Qe5#
      • 1...Sd6
        • 2.Qe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#
      • 1...Sh8
        • 2.Qe5#
      • 1...g2
        • 2.Qf2#
      • 1...d5
        • 2.Se6#
      • 1...d6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 22
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R1(D)
    • P(i);N_GUARD::S(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(D)
      • Vars
        • K(h);S_FLIGHT,XR(D)::QAB(A)
        • S(j);N_GUARD,XS(B)::QAB1(A)
        • B(a);OGATE::QAB(A)
      • Refutation
        • P(e);
  • Actual
    • S(B);
    • Vars
      • K(h);S_FLIGHT,XR(D)::QAB(A)
      • B(a);OGATE::QAB(A)
      • S(b);N_GUARD::R1(D),XS(b)
      • R(c);N_GUARD::S(B),XR(d)
      • R(d);SBLOCK::R1(D)
      • S(b);N_GUARD::R1(D)
      • S(j);N_GUARD::QAB1(A),XS(j)
      • S(j);N_GUARD::QAB1(A)
      • P(f);N_GUARD::QAB(A)
      • P(i);N_GUARD::S(E)
HTML5 logo

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).