MESON Chess Problem Database

Problem Display
PID: 21742 (k7/P7/1P1NpP2/1p2q3/4NR2/5B2/4K3/8 w - - 0 1)

Bottacchi, Antonio

1st HM., 8. American Chess Congress, 1921

k7/P7/1P1NpP2/1p2q3/4NR2/5B2/4K3/8

#2

8 + 4

3132 The Good Companion Two-Mover 1922
3360 Simple Two-move Themes 1924
887 Mate in Two Moves 1931
5501 Chess Cameos 1936
3147 Chess Problems: Introduction to an Art 1963
13255 Hoekstenen 1967
3098 FIDE Album (1914-1944) (I) 1971
1077 Boletim da UBP 1989
1077 Boletim da UBP 1991
3310 2345 Chess Problems 1997
133 The Problemist Supplement 2006
56 The Problemist 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sd2#
      • 2.Sf2#
      • 2.Sc3#
      • 2.Sg3#
      • 2.Sc5#
      • 2.Sg5#
    • 1...Qb2+
      • 2.Sd2#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qxd6
      • 2.Sxd6#
    • 1...Qxf6
      • 2.Sd2#
      • 2.Sf2#
      • 2.Sc3#
      • 2.Sg3#
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sxf6#
    • 1...Qxe4+
      • 2.Bxe4#
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qg5
      • 2.Sxg5#
  • Tries
    • 1.Rh4?
      • threat
        • 2.Rh8#
      • 1...Qb2+
        • 2.Sd2#
      • 1...Qh2+
        • 2.Sf2#
      • 1...Qxe4+
        • 2.Bxe4#
      • 1...Qxd6
        • 2.Sxd6#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Qg3
        • 2.Sxg3#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qg5
        • 2.Sxg5#
      • 1...Qh5!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rg8#
      • 1...Qb2+
        • 2.Sd2#
      • 1...Qh2+
        • 2.Sf2#
      • 1...Qxe4+
        • 2.Bxe4#
      • 1...Qxd6
        • 2.Sxd6#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Qg3
        • 2.Sxg3#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qg5
        • 2.Sxg5#
      • 1...Qh5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,N_PINS(C)::B(B)+S(C)
    • Q(b);N_PINS(C)::B(B)+S(C),XQ(b)
    • Q(b);N_PINS(C),XS(F)::B(B)+S(C),XQ(b)
    • Q(b);CHECK,OGATE,P_SPINQ(b),XS(C)::B(B),XQ(b)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • Q(b);CHECK,N_PINS(C)::B(B)+S(C)
        • Q(b);CHECK,OGATE,P_SPINQ(b),XS(C)::B(B),XQ(b)
        • Q(b);N_PINS(C),XS(F)::B(B)+S(C),XQ(b)
        • Q(b);N_PINS(C),XP(G)::B(B)+S(C),XQ(b)
        • Q(b);N_PINS(C)::B(B)+S(C),XQ(b)
      • Refutation
        • Q(b);N_PINS(C),P_PINB(B)
  • Actual
    • R(D);
    • Threat
      • R(D)
    • Vars
      • Q(b);CHECK,N_PINS(C)::B(B)+S(C)
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(C)::B(B),XQ(b)
      • Q(b);N_PINS(C),XS(F)::B(B)+S(C),XQ(b)
      • Q(b);N_PINS(C),XP(G)::B(B)+S(C),XQ(b)
      • Q(b);N_PINS(C)::B(B)+S(C),XQ(b)
      • Q(b);N_PINS(C)::B(B)+S(C)
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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).