MESON Chess Problem Database

Problem Display
PID: 269269 (1n2Nqn1/RP1kPP1R/b4p1p/BpPP3N/1P5Q/8/8/5K2 w - - 0 1)

Chicco, Adriano

1st Prize, L'Italia Scacchistica, 1932

1n2Nqn1/RP1kPP1R/b4p1p/BpPP3N/1P5Q/8/8/5K2

#2

13 + 8

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe7
      • 2.Shxf6#
      • 2.Sexf6#
    • 1...f5
      • 2.exf8S#
  • Tries
    • 1.Shxf6+?
      • 1...Kxe7
        • 2.Qe1#
        • 2.Qe4#
        • 2.fxg8S#
      • 1...Sxf6!
    • 1.Sexf6+?
      • 1...Kxe7
        • 2.Qe1#
        • 2.Qe4#
        • 2.fxg8S#
      • 1...Sxf6!
    • 1.Qg3?
      • threat
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kxe7
        • 2.Qd6#
      • 1...Qxe7
        • 2.Qc7#
      • 1...Bxb7
        • 2.Qc7#
      • 1...Qxf7!
    • 1.Qh2?
      • threat
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kxe7
        • 2.Qd6#
      • 1...Qxe7
        • 2.Qc7#
      • 1...Bxb7
        • 2.Qc7#
      • 1...Qxf7!
    • 1.Qh3+?
      • 1...Kxe7
        • 2.Qe6#
        • 2.d6#
      • 1...f5!
    • 1.Qf4?
      • threat
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kxe7
        • 2.Qd6#
      • 1...Qxe7
        • 2.Qc7#
      • 1...Bxb7
        • 2.Qc7#
      • 1...Qxf7!
    • 1.Qg4+?
      • 1...Kxe7
        • 2.Qe6#
        • 2.d6#
      • 1...f5!
    • 1.c6+?
      • 1...Kxe7
        • 2.Qe1#
        • 2.Qe4#
      • 1...Sxc6!
    • 1.exf8Q?
      • threat
        • 2.Qd6#
        • 2.fxg8Q#
        • 2.fxg8S#
        • 2.fxg8B#
        • 2.fxg8R#
      • 1...f5
        • 2.Qd8#
        • 2.Qd6#
        • 2.fxg8Q#
        • 2.fxg8S#
        • 2.fxg8B#
        • 2.fxg8R#
      • 1...Sc6
        • 2.Qd6#
      • 1...Se7
        • 2.Shxf6#
        • 2.Sexf6#
      • 1...Bxb7!
  • Keys
    • 1.Sd6!
      • 1...Kxe7
        • 2.fxg8S#
      • 1...Qxe7
        • 2.f8S#
      • 1...Qxf7
        • 2.e8Q#
      • 1...Bxb7
        • 2.Rxb7#
      • 1...Sxe7
        • 2.Sxf6#
      • 1...Qg7
        • 2.e8Q#
      • 1...Qc8
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Qd8
        • 2.exd8Q#
      • 1...Qe8
        • 2.fxe8Q#
        • 2.fxe8B#
      • 1...Sc6
        • 2.b8S#
      • 1...f5
        • 2.exf8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(c);::PXQ(g)=S
  • Tries
    • Try
      • S(G);CHECK,XP(c)
      • Refutation
        • S(h);XS(G)
    • Try
      • S(M);CHECK,XP(c)
      • Refutation
        • S(h);XS(M)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);P-FLIGHT,XP(J)::QAB1(C)
        • Q(g);SBLOCK,XP(J)::QAR1(C)
        • B(b);P_SPINB(b),XP(I)::QAR1(C)
      • Refutation
        • Q(g);XP(K)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);P-FLIGHT,XP(J)::QAB1(C)
        • Q(g);SBLOCK,XP(J)::QAR1(C)
        • B(b);P_SPINB(b),XP(I)::QAR1(C)
      • Refutation
        • Q(g);XP(K)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);P-FLIGHT,XP(J)::QAB1(C)
        • Q(g);SBLOCK,XP(J)::QAR1(C)
        • B(b);P_SPINB(b),XP(I)::QAR1(C)
      • Refutation
        • Q(g);XP(K)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • P(E);CHECK
      • Refutation
        • S(f);XP(E)
    • Try
      • P(J);XQ(g)
      • Threat
        • DUALS(5)
      • Vars
        • S(f);::QAR1(J)
      • Refutation
        • B(b);P_SPINB(b),XP(I)
  • Actual
    • S(M);
    • Vars
      • K(e);P-FLIGHT,P_SPINP(c),XP(J)::PXS(h)=S
      • Q(g);OGATE,XP(J)::P=S
      • Q(g);N_GUARD,XP(K)::P=Q
      • B(b);OGATE,P_SPINB(b),XP(I)::R(H),XB(b)
      • S(h);N_GUARD,SBLOCK,XP(J)::S(G),XP(c)
      • Q(g);N_GUARD::P=Q
      • Q(g);OGATE::PXQ(g)=Q
      • S(f);OGATE::P=S
      • P(c);::PXQ(g)=S
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