MESON Chess Problem Database

Problem Display
PID: 107573 (4K3/4N3/1NPB4/ppP5/pk6/4n2R/PP6/2r1r3 w - - 0 1)

Albertini, A

Telescacco 92, 1995

4K3/4N3/1NPB4/ppP5/pk6/4n2R/PP6/2r1r3

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.a3#
    • 1...Sf1
      • 2.a3#
    • 1...Sg2
      • 2.a3#
    • 1...Sc4
      • 2.Sd5#
    • 1...Sg4
      • 2.a3#
    • 1...Sd5
      • 2.a3#
    • 1...Sf5
      • 2.a3#
  • Tries
    • 1.Rxe3?
      • threat
        • 2.Sed5#
        • 2.a3#
      • 1...Ra1
        • 2.Sed5#
      • 1...Rcd1
        • 2.a3#
      • 1...Rc3
        • 2.Sed5#
      • 1...Red1
        • 2.a3#
      • 1...a3
        • 2.Sed5#
        • 2.Rb3#
        • 2.bxa3#
      • 1...Rxe3!
  • Keys
    • 1.c7!
      • threat
        • 2.Sc6#
      • 1...Sd1
        • 2.a3#
      • 1...Sf1
        • 2.a3#
      • 1...Sc2
        • 2.c6#
      • 1...Sg2
        • 2.a3#
      • 1...Sc4
        • 2.Sd5#
      • 1...Sg4
        • 2.a3#
      • 1...Sd5
        • 2.a3#
      • 1...Sf5
        • 2.a3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);P_PINS(H)::P(A)
    • S(c);N_GUARD,P_PINS(H),SBLOCK::S(E)
  • Tries
    • Try
      • R(C);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::S(H)
        • R(a);::P(A)
        • R(b);::P(A)
      • Refutation
        • R(b);P_PINS(H),XR(C)
  • Actual
    • P(F);
    • Threat
      • S(H)
    • Vars
      • S(c);P_PINS(H)::P(A)
      • S(c);P_PINS(H),S_CUTR(a)::B(G)+P(D)
      • S(c);N_GUARD,P_PINS(H),SBLOCK::S(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).