MESON Chess Problem Database

Problem Display
PID: 261176 (4K1Q1/2pp2p1/4n3/RPpr4/p1k1N1N1/P7/1PP1rB1b/5B2 w - - 0 1)

Fontana, Robert

Neue Zurcher Zeitung, 1948

4K1Q1/2pp2p1/4n3/RPpr4/p1k1N1N1/P7/1PP1rB1b/5B2

#2

11 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Se3#
    • 1...Sd4
      • 2.Se3#
    • 1...Sf4
      • 2.Se5#
    • 1...Sg5
      • 2.Bxe2#
    • 1...Sd8
      • 2.Bxe2#
    • 1...Sf8
      • 2.Bxe2#
  • Tries
    • 1.Qxe6?
      • threat
        • 2.Sd2#
        • 2.Bxe2#
      • 1...Bf4
        • 2.Bxe2#
      • 1...dxe6!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Rxa4#
      • 1...Sd4+
        • 2.Se3#
      • 1...Sf4+
        • 2.Se5#
      • 1...Sg5+
        • 2.Bxe2#
      • 1...Sd8+
        • 2.Bxe2#
      • 1...Sf8+
        • 2.Bxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(f);P_SPINS(g),SBLOCK::S(G)
    • S(g);P_PINS(F),SBLOCK::S(G)
    • S(g);P_PINS(F),S_CUTB(b),S_CUTR(f)::S(G)
    • S(g);P_PINS(F),S_CUTR(f)::B(A),XR(a)
  • Tries
    • Try
      • Q(K);XS(g)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::B(A),XR(a)
      • Refutation
        • P(i);XQ(K)
  • Actual
    • S(F);
    • Threat
      • R(H),XP(c)
    • Vars
      • S(g);CHECK,SBLOCK::S(G)
      • S(g);CHECK,S_CUTB(b),S_CUTR(f)::S(G)
      • S(g);CHECK,S_CUTR(f)::B(A),XR(a)
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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).