MESON Chess Problem Database

Problem Display
PID: 263218 (2n2R2/p2p1Rp1/1p1Bk3/1N2ppp1/K1P4q/1Bb4r/5n2/1b6 w - - 0 1)

Somma, Francesco

L'Echiquier, 1928

2n2R2/p2p1Rp1/1p1Bk3/1N2ppp1/K1P4q/1Bb4r/5n2/1b6

#2

7 + 14

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.c5#
    • 1...Qxc4+
      • 2.Bxc4#
    • 1...Qh5
      • 2.c5#
    • 1...Qh6
      • 2.c5#
    • 1...Qh7
      • 2.c5#
    • 1...Qh8
      • 2.c5#
    • 1...Se4
      • 2.c5#
    • 1...Sg4
      • 2.c5#
    • 1...Sxd6
      • 2.Sc7#
    • 1...Se7
      • 2.Rxe7#
    • 1...e4
      • 2.c5#
    • 1...f4
      • 2.c5#
    • 1...g4
      • 2.c5#
    • 1...g6
      • 2.Rf6#
  • Tries
    • 1.Re8+?
      • 1...Se7
        • 2.Rexe7#
      • 1...Kxf7!
  • Keys
    • 1.Rxg7!
      • threat
        • 2.Rg6#
      • 1...Qxc4+
        • 2.Bxc4#
      • 1...Sxd6
        • 2.Sc7#
      • 1...Qh5
        • 2.c5#
      • 1...Qh6
        • 2.c5#
      • 1...Qh7
        • 2.c5#
      • 1...Qh8
        • 2.c5#
      • 1...Se4
        • 2.c5#
      • 1...Sg4
        • 2.c5#
      • 1...Se7
        • 2.Rxe7#
      • 1...e4
        • 2.c5#
      • 1...f4
        • 2.c5#
      • 1...g4
        • 2.c5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(e);N_PINP(C)::B(A)+P(C)
    • Q(e);CHECK,OGATE,P_SPINQ(e),XP(C)::B(A),XQ(e)
    • S(b);N_PINP(C)::B(A)+P(C)
    • S(n);SBLOCK,XB(E)::S(D)
    • S(n);N_GUARD::R1(F),XS(n)
    • P(f);N_PINP(C)::B(A)+P(C)
    • P(g);N_PINP(C)::B(A)+P(C)
    • P(h);N_PINP(C)::B(A)+P(C)
    • P(m);N_GUARD::R1(F)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • S(n);N_GUARD,P_SPINS(n)::R1(G),XS(n)
      • Refutation
        • K(j);S_FLIGHT,XR(F)
  • Actual
    • R(F);XP(m)
    • Threat
      • R(F)
    • Vars
      • Q(e);CHECK,OGATE,P_SPINQ(e),XP(C)::B(A),XQ(e)
      • S(n);SBLOCK,XB(E)::S(D)
      • Q(e);N_PINP(C)::B(A)+P(C)
      • S(b);N_PINP(C)::B(A)+P(C)
      • S(n);N_GUARD::R1(F),XS(n)
      • P(f);N_PINP(C)::B(A)+P(C)
      • P(g);N_PINP(C)::B(A)+P(C)
      • P(h);N_PINP(C)::B(A)+P(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).