MESON Chess Problem Database

Problem Display
PID: 273111 (3N4/5p2/q2N3R/5BR1/1PPk3n/r2PrbB1/2PP1PnK/8 w - - 0 1)

Piatesi, Antonio

Mat, 1980

3N4/5p2/q2N3R/5BR1/1PPk3n/r2PrbB1/2PP1PnK/8

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Sxb5#
    • 1...Qc8
      • 2.Sb5#
    • 1...Qa7
      • 2.Sb5#
    • 1...Qa8
      • 2.Sb5#
    • 1...Ra1
      • 2.c3#
    • 1...Ra2
      • 2.c3#
    • 1...Ra4
      • 2.c3#
    • 1...Ra5
      • 2.c3#
    • 1...Se1
      • 2.fxe3#
    • 1...Sxf5
      • 2.Sxf5#
  • Keys
    • 1.Be4!
      • threat
        • 2.Be5#
        • 2.Rd5#
      • 1...Qxc4
        • 2.Be5#
      • 1...Qxd6
        • 2.Rxd6#
      • 1...Rxe4
        • 2.Rd5#
      • 1...Bxe4
        • 2.Be5#
      • 1...Qb5
        • 2.Sxb5#
      • 1...Qb7
        • 2.Be5#
      • 1...Qa5
        • 2.Sc6#
      • 1...Qc6
        • 2.Sxc6#
        • 2.Be5#
      • 1...Qa8
        • 2.Sb5#
        • 2.Be5#
      • 1...Ra5
        • 2.c3#
      • 1...Sf4
        • 2.fxe3#
      • 1...Sf5
        • 2.Sxf5#
      • 1...Sg6
        • 2.Sf5#
        • 2.Rd5#
      • 1...f5
        • 2.Se6#
      • 1...f6
        • 2.Se6#
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 7
  • Sets
    • Q(g);N_GUARD::S(K),XQ(g)
    • Q(g);N_GUARD::S(K)
    • R(b);N_GUARD::P(A)
    • S(a);N_GUARD::P(C),XR(c)
    • S(f);XB(I)::S(K),XS(f)
  • Actual
    • B(I);
    • Threat
      • DUALS(2)
    • Vars
      • Q(g);XP(H)::B(F)
      • Q(g);OGATE,P_PINB(F),XS(K)::R(L),XQ(g)
      • R(c);XB(I)::R1(J)
      • B(d);XB(I)::B(F)
      • Q(g);N_GUARD::S(K),XQ(g)
      • Q(g);::B(F)
      • Q(g);N_GUARD::S(M)
      • R(b);N_GUARD::P(A)
      • S(a);N_GUARD::P(C),XR(c)
      • S(f);N_GUARD::S(K),XS(f)
      • P(h);N_GUARD::S(M)
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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).