MESON Chess Problem Database

Problem Display
PID: 147769 (2K4n/3Qp2b/3b4/B1p1k2N/2R1p1p1/1n2N3/8/3q4 w - - 0 1)

Somma, Francesco

L'Italia Scacchistica, 1930

2K4n/3Qp2b/3b4/B1p1k2N/2R1p1p1/1n2N3/8/3q4

#2

6 + 10

3713 Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Sxg4#
    • 1...Bc7
      • 2.Qxe7#
    • 1...Bb8
      • 2.Qxe7#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Bg8
      • 2.Qf5#
    • 1...Sd2
      • 2.Bc3#
    • 1...Sg6
      • 2.Qf5#
    • 1...e6
      • 2.Qg7#
  • Keys
    • 1.Bc7!
      • threat
        • 2.Qxe7#
      • 1...Qd5
        • 2.Sxg4#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Bg8
        • 2.Qf5#
      • 1...Sd4
        • 2.Rxc5#
      • 1...Sg6
        • 2.Qf5#
      • 1...e6
        • 2.Qg7#

Anticipated by 262415(1929)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD,SBLOCK::S(A),XP(d)
    • B(g);N_GUARD::QAR2(E),XP(h)
    • B(i);N_GUARD,P_PINQ(E)::QAR1(E),XB(i)
    • B(i);N_GUARD::QAR1(E)
    • S(b);N_GUARD,S_CUTQ(a)::B(C)
    • S(j);S_CUTB(i)::QAR1(E)
    • P(h);OGATE,SBLOCK::QAB(E)
  • Actual
    • B(C);P_PINB(g)
    • Threat
      • QAR2(E),XP(h)
    • Vars
      • Q(a);N_GUARD,SBLOCK::S(A),XP(d)
      • B(i);N_GUARD,P_PINQ(E)::QAR1(E),XB(i)
      • B(i);N_GUARD::QAR1(E)
      • S(b);N_GUARD,SBLOCK,S_CUTQ(a)::R(B),XP(e)
      • S(j);S_CUTB(i)::QAR1(E)
      • P(h);OGATE,SBLOCK::QAB(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).