MESON Chess Problem Database

Problem Display
PID: 67712 (2Q5/2N3P1/1pp2b1B/8/8/P1k2pp1/1N1p2r1/K2B1b2 w - - 0 1)

Stocchi, Ottavio

2nd Prize, Il Due Mosse, 1957-1958

2Q5/2N3P1/1pp2b1B/8/8/P1k2pp1/1N1p2r1/K2B1b2

#2

8 + 9

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Sb5#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Bd4
      • 2.Sd5#
    • 1...Bxg7
      • 2.Bxg7#
  • Tries
    • 1.Qf5?
      • threat
        • 2.Qxf6#
      • 1...Bxg7
        • 2.Bxg7#
      • 1...Re2
        • 2.Qd3#
      • 1...Bd4
        • 2.Qc2#
      • 1...Bh4
        • 2.Qe5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bg5
        • 2.Qe5#
      • 1...Be7
        • 2.Qe5#
      • 1...Bd8
        • 2.Qe5#
      • 1...Kd4!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qxf6#
      • 1...Kd4
        • 2.Qe3#
      • 1...Bxg7
        • 2.Bxg7#
      • 1...Re2
        • 2.Qc4#
      • 1...Bd4
        • 2.Qb3#
      • 1...Bh4
        • 2.Qe5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bg5
        • 2.Qe5#
      • 1...Be7
        • 2.Qe5#
      • 1...Bd8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(c);S_CUTB(a)::S(F)
    • B(a);N_GUARD::S(F),XB(a)
    • B(i);SBLOCK::S(F)
    • B(i);OGATE,XP(G)::B(E),XB(i)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAB(H),XB(i)
      • Vars
        • B(i);OGATE,XP(G)::B(E),XB(i)
        • R(c);S_CUTB(a)::QAR1(H)
        • B(i);SBLOCK::QAR1(H)
        • B(i);N_GUARD::QAB(H)
        • B(i);N_GUARD::QAB(H),XB(i)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(H);
    • Threat
      • QAB(H),XB(i)
    • Vars
      • K(d);S_FLIGHT::QAB1(H)
      • B(i);OGATE,XP(G)::B(E),XB(i)
      • R(c);S_CUTB(a)::QAR1(H)
      • B(i);SBLOCK::QAR1(H)
      • B(i);N_GUARD::QAB(H)
      • B(i);N_GUARD::QAB(H),XB(i)
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