MESON Chess Problem Database

Problem Display
PID: 225600 (B5qR/P2prN2/p2R1n2/4b3/K1k5/P1ppB1p1/rPNP4/n7 w - - 0 1)

Lattero, Alfredo Mario

Praca, 1958

B5qR/P2prN2/p2R1n2/4b3/K1k5/P1ppB1p1/rPNP4/n7

#2

11 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf7
      • 2.Rc8#
    • 1...Qh7
      • 2.Rc8#
    • 1...Qg4
      • 2.Rc8#
    • 1...Qg5
      • 2.Rc8#
    • 1...Qg6
      • 2.Rc8#
    • 1...Qg7
      • 2.Rc8#
    • 1...Qc8
      • 2.Rxc8#
    • 1...Rxa3+
      • 2.Sxa3#
    • 1...Bxd6
      • 2.Sxd6#
    • 1...Sxc2
      • 2.b3#
    • 1...Se4
      • 2.Bd5#
    • 1...Sg4
      • 2.Bd5#
    • 1...Sd5
      • 2.Bxd5#
    • 1...Sh5
      • 2.Bd5#
    • 1...Sh7
      • 2.Bd5#
    • 1...Se8
      • 2.Bd5#
    • 1...dxc2
      • 2.d3#
  • Keys
    • 1.Bb6!
      • threat
        • 2.Se3#
      • 1...Rxa3+
        • 2.Sxa3#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Sxc2
        • 2.b3#
      • 1...dxc2
        • 2.d3#
      • 1...Qg5
        • 2.Rc8#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Bf4
        • 2.Rd4#
      • 1...Sg4
        • 2.Bd5#
      • 1...Sd5
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • Q(l);OGATE,XS(I)::R(K)
    • Q(l);OGATE::R(K)
    • Q(l);OGATE::R(K),XQ(l)
    • R(b);CHECK,XP(D)::S(B),XR(b)
    • B(g);XR(G)::S(I),XB(g)
    • S(a);N_GUARD,XS(B)::P(A)
    • S(i);N_GUARD::B(J)
    • S(i);N_GUARD::B(J),XS(i)
    • P(d);OGATE,XS(B)::P(C)
  • Actual
    • B(E);
    • Threat
      • S(B)
    • Vars
      • R(b);CHECK,XP(D)::S(B),XR(b)
      • B(g);XR(G)::S(I),XB(g)
      • S(a);N_GUARD,XS(B)::P(A)
      • P(d);OGATE,XS(B)::P(C)
      • Q(l);OGATE::R(K)
      • B(g);N_GUARD::R1(G),XB(g)
      • B(g);N_GUARD::R1(G)
      • S(i);N_GUARD::B(J)
      • S(i);N_GUARD::B(J),XS(i)
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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).