MESON Chess Problem Database

Problem Display
PID: 259567 (8/7b/n1p2p2/Q4Pn1/2p2k2/4N1Rp/5N1P/BK6 w - - 0 1)

Somma, Francesco

L'Italia Scacchistica, 1927

8/7b/n1p2p2/Q4Pn1/2p2k2/4N1Rp/5N1P/BK6

#2

8 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5+
      • 2.Qxf5#
    • 1...Se4
      • 2.Sxh3#
    • 1...Sb4
      • 2.Qc7#
    • 1...Sc5
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
    • 1...Sb8
      • 2.Qc7#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qd6#
      • 1...Bxf5+
        • 2.Qxf5#
      • 1...Sf3
        • 2.Rg4#
      • 1...Se4
        • 2.Sxh3#
      • 1...Sf7
        • 2.Qd4#
        • 2.Qxc4#
      • 1...Sxc5!
    • 1.Qd5?
      • threat
        • 2.Qd6#
      • 1...Bxf5+
        • 2.Qxf5#
      • 1...Sf3
        • 2.Qxf3#
        • 2.Qe4#
      • 1...Se4
        • 2.Sxh3#
        • 2.Qxe4#
      • 1...Sf7
        • 2.Sxh3#
        • 2.Qf3#
        • 2.Qxc4#
        • 2.Qe4#
        • 2.Qd4#
      • 1...cxd5!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd6#
      • 1...Bxf5+
        • 2.Sc2#
      • 1...Sf3
        • 2.Rg4#
      • 1...Se4
        • 2.Sxh3#
      • 1...Sf7
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(h);CHECK,OGATE,XP(H)::QAR1(G),XB(h)
    • S(d);N_GUARD,N_PINP(H),SBLOCK::S(C),XP(a)
    • S(e);N_GUARD::QAB(G)
    • S(e);N_GUARD::QAB(G),XS(e)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • B(h);CHECK,OGATE,XP(H)::QAR1(G),XB(h)
        • S(d);SBLOCK::R1(F)
        • S(d);N_GUARD,N_PINP(H),SBLOCK::S(C),XP(a)
      • Refutation
        • S(e);XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • B(h);CHECK,OGATE,XP(H)::QAR1(G),XB(h)
      • Refutation
        • P(f);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • B(h);CHECK,SBLOCK,XP(H)::QAB(G)+S(E)
      • S(d);SBLOCK::R1(F)
      • S(d);N_GUARD,N_PINP(H),SBLOCK::S(C),XP(a)
      • S(d);N_GUARD::QAR2(G)
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