MESON Chess Problem Database

Problem Display
PID: 263678 (1KbQnb2/1PPNPr2/3k1pR1/1q1B4/1P2PNnB/3R4/8/8 w - - 0 1)

Foschini, Ettore

L'Italia Scacchistica, 1933

1KbQnb2/1PPNPr2/3k1pR1/1q1B4/1P2PNnB/3R4/8/8

#2

13 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.bxc8S#
    • 1...Qa4
      • 2.bxc8S#
    • 1...Qc4
      • 2.bxc8S#
    • 1...Qc6
      • 2.bxc8S#
    • 1...Qa5
      • 2.bxc8S#
    • 1...Qc5
      • 2.bxc5#
      • 2.bxc8S#
    • 1...Qxb7+
      • 2.Bxb7#
    • 1...Sf2
      • 2.e5#
    • 1...Sh2
      • 2.e5#
    • 1...Se3
      • 2.e5#
    • 1...Sh6
      • 2.e5#
  • Tries
    • 1.Se5+?
      • 1...Qd7
        • 2.Sc4#
        • 2.Sxf7#
      • 1...Bd7
        • 2.Sxf7#
      • 1...Kxe5!
    • 1.exf8Q+?
      • 1...Re7
        • 2.Qdxe7#
        • 2.Qfxe7#
      • 1...Rxf8!
    • 1.exf8B+?
      • 1...Re7
        • 2.Bxe7#
        • 2.Qxe7#
      • 1...Rxf8!
  • Keys
    • 1.Bxf6!
      • threat
        • 2.Be5#
      • 1...Qxb7+
        • 2.Bxb7#
      • 1...Qxd7
        • 2.bxc8S#
      • 1...Rxf6
        • 2.exf8Q#
        • 2.exf8B#
      • 1...Bxd7
        • 2.c8S#
      • 1...Sgxf6
        • 2.e5#
      • 1...Sexf6
        • 2.e8S#
      • 1...Se5
        • 2.Bxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_PINP(H),XR(A)::PXB(f)=S
    • Q(b);N_PINP(H)::PXB(f)=S
    • Q(b);CHECK,OGATE,XP(H)::R(A)+B(F),XQ(b)
    • S(a);N_GUARD::P(C)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • B(f);P_SPINB(f)::S(J),XR(e)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT,XS(J)
    • Try
      • P(K);CHECK,XB(h)
      • Refutation
        • R(e);XQ(K)
    • Try
      • P(K);CHECK,XB(h)
      • Refutation
        • R(e);XB(K)
  • Actual
    • B(E);XP(d)
    • Threat
      • R(G)+B(E),DCHECK
    • Vars
      • Q(b);CHECK,OGATE,XP(H)::R(A)+B(F),XQ(b)
      • Q(b);N_PINP(H),P_SPINQ(b),XS(J)::PXB(f)=S
      • R(e);N_GUARD,P_SPINR(e),XB(E)::PXB(h)=Q
      • B(f);OGATE,P_SPINB(f),XS(J)::P=S
      • S(a);N_GUARD,P_SPINS(a),XB(E)::P(C)
      • S(g);OGATE,P_SPINS(g),XB(E)::P=S
      • S(a);::R(G)+B(E),DCHECK,XS(a)
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