MESON Chess Problem Database

Problem Display
PID: 262323 (B3b3/prP3K1/N4Q2/1k1NP3/4P3/3P4/4n2p/R5b1 w - - 0 1)

Somma, Francesco

L'Echiquier, 1927

B3b3/prP3K1/N4Q2/1k1NP3/4P3/3P4/4n2p/R5b1

#2

10 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc7+
      • 2.Sdxc7#
    • 1...Sc1
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sc3#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sf4
      • 2.Sc3#
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxe8#
      • 1...Kc6
        • 2.Qxe8#
      • 1...Rxc7
        • 2.Saxc7#
      • 1...Rb6
        • 2.Qb4#
      • 1...Rb8
        • 2.Qb4#
      • 1...Bh5
        • 2.Qd7#
      • 1...Bc6
        • 2.Qb4#
      • 1...Bg6
        • 2.Qd7#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Bf7
        • 2.Qd7#
      • 1...Sd4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 8
    • REMOVED MATES = 4
  • Sets
    • R(f);CHECK,XP(H)::S(D),XR(f)
    • S(b);N_GUARD::S(D)
    • S(b);N_GUARD::S(D),XS(b)
  • Actual
    • Q(G);N_SPINP(H)
    • Threat
      • QAB(G),XB(g)
    • Vars
      • K(d);P_SPINR(f),S_FLIGHT::QAB(G),XB(g)
      • R(f);P_PINQ(G),XP(H)::S(F),XR(f)
      • R(f);::QAR1(G)
      • B(g);N_GUARD::QAB(G)
      • B(g);SBLOCK::QAR1(G)
      • B(g);N_GUARD::QAB(G),XB(g)
      • S(b);S_CUTB(a)::QAR1(G)
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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).