MESON Chess Problem Database

Problem Display
PID: 261442 (8/1N6/2pR4/5p1b/K1k4n/1p4r1/1bP3B1/1N6 w - - 0 1)

Somma, Francesco

Comm., L'Italia Scacchistica, 1925

8/1N6/2pR4/5p1b/K1k4n/1p4r1/1bP3B1/1N6

#2

6 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg2
      • 2.cxb3#
    • 1...Rc3
      • 2.Sd2#
    • 1...Rd3
      • 2.cxd3#
    • 1...Rg4
      • 2.Bf1#
      • 2.cxb3#
    • 1...Rg5
      • 2.cxb3#
    • 1...Rg6
      • 2.cxb3#
    • 1...Rg7
      • 2.cxb3#
    • 1...Rg8
      • 2.cxb3#
    • 1...Bc3
      • 2.Sa3#
      • 2.cxb3#
    • 1...Bf3
      • 2.cxb3#
    • 1...Sf3
      • 2.Bf1#
      • 2.cxb3#
    • 1...c5
      • 2.Sa5#
  • Tries
    • 1.Bf1+?
      • 1...Rd3
        • 2.Bxd3#
        • 2.cxb3#
        • 2.cxd3#
      • 1...Be2!
  • Keys
    • 1.c3!
      • threat
        • 2.Rd4#
      • 1...Rxc3
        • 2.Sd2#
      • 1...Bxc3
        • 2.Sa3#
      • 1...Rd3
        • 2.Rxc6#
      • 1...Rg4
        • 2.Bf1#
      • 1...Sf3
        • 2.Bf1#
      • 1...c5
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(c);N_GUARD,XB(C)::P(B),XP(b)
    • R(c);SBLOCK::S(A)
    • R(c);OGATE::P(B),XR(c)
    • R(c);N_GUARD::P(B),XP(b)
    • B(g);S_CUTR(c)::P(B),XP(b)
    • P(h);SBLOCK::S(F)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • B(g);P_SPINB(g)
  • Actual
    • P(B);
    • Threat
      • R1(E)
    • Vars
      • R(c);SBLOCK,XP(B)::S(A)
      • B(a);N_GUARD,SBLOCK,XP(B)::S(A)
      • R(c);SBLOCK::R(E),XP(h)
      • R(c);N_GUARD,S_CUTB(g)::B(C)
      • S(e);S_CUTB(g),S_CUTR(c)::B(C)
      • P(h);SBLOCK::S(F)
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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).