MESON Chess Problem Database

Problem Display
PID: 263223 (1n2b2b/KQp5/2p5/N2p2p1/1Ppk4/8/1n1PP2B/7B w - - 0 1)

Somma, Francesco

L'Italia Scacchistica, 1929

1n2b2b/KQp5/2p5/N2p2p1/1Ppk4/8/1n1PP2B/7B

#2

8 + 10

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Bg1#
    • 1...Sd3
      • 2.e3#
    • 1...Sd7
      • 2.Sxc6#
    • 1...c5
      • 2.Qxd5#
  • Tries
    • 1.Qb6+?
      • 1...c5
        • 2.Qxc5#
      • 1...cxb6!
    • 1.Qxc7?
      • threat
        • 2.Bg1#
      • 1...Sd3
        • 2.e3#
      • 1...Sd1!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qg4#
      • 1...Bh5
        • 2.Qxh8#
      • 1...Bg6
        • 2.Qxh8#
      • 1...Bd7
        • 2.Qxh8#
      • 1...Be5
        • 2.Bg1#
      • 1...Sd3
        • 2.e3#
      • 1...Sd7
        • 2.Sxc6#
      • 1...g4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(j);SBLOCK::B(D)
    • S(a);SBLOCK::P(C)
    • S(h);N_GUARD,S_CUTB(i)::S(F),XP(f)
    • P(f);OGATE::QAR1(H),XP(d)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • P(f);P_SPINP(f)::QAB1(H),XP(f)
      • Refutation
        • P(g);XQ(H)
    • Try
      • Q(H);XP(g)
      • Threat
        • B(D)
      • Vars
        • S(a);SBLOCK::P(C)
      • Refutation
        • S(a);
  • Actual
    • Q(H);
    • Threat
      • QAR(H)
    • Vars
      • B(i);OGATE::QAB(H),XB(j)
      • B(j);SBLOCK::B(D)
      • S(a);SBLOCK::P(C)
      • S(h);N_GUARD,S_CUTB(i)::S(F),XP(f)
      • P(e);::QAR(H),XP(e)
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Developed and maintained by Brian Stephenson.
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