MESON Chess Problem Database

Problem Display
PID: 120820 (8/p4N1Q/P2p4/2pk4/N1Rp2Bn/1K6/2P5/8 w - - 0 1)

Stocchi, Ottavio

Il Littorale, 1929-1931

8/p4N1Q/P2p4/2pk4/N1Rp2Bn/1K6/2P5/8

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg6
      • 2.Qh1#
    • 1...d3
      • 2.Qe4#
  • Tries
    • 1.Sc3+?
      • 1...dxc3
        • 2.Qe4#
      • 1...Kc6!
    • 1.Bd7?
      • 1...Sf5
        • 2.Qxf5#
        • 2.Qh1#
      • 1...Sg6
        • 2.Qh1#
      • 1...Sg2
        • 2.Qf5#
      • 1...d3
        • 2.Sc3#
        • 2.Qxd3#
        • 2.Qe4#
      • 1...Sf3!
    • 1.Qg6?
      • 1...Kc6
        • 2.Rxc5#
      • 1...Sf5
        • 2.Bf3#
      • 1...Sg2
        • 2.Bf3#
      • 1...Sf3
        • 2.Bxf3#
      • 1...d3
        • 2.Qe4#
        • 2.Qxd6#
      • 1...Sxg6!
  • Keys
    • 1.Qh6!
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.Rxc5#
      • 1...Sg2
        • 2.Bf3#
      • 1...Sf3
        • 2.Bxf3#
      • 1...Sf5
        • 2.Bf3#
      • 1...Sg6
        • 2.Qh1#
      • 1...d3
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE::QAB(H)
    • P(a);::QAB1(H)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • P(a);XS(C)::QAB1(H)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT
    • Try
      • B(E);
      • Vars
        • S(b);OGATE::QAB(H)
        • S(b);N_GUARD::QAR2(H)
      • Refutation
        • S(b);
    • Try
      • Q(H);
      • Vars
        • K(d);P_SPINP(c),S_FLIGHT::R1(D),XP(c)
        • S(b);N_GUARD::B(E)
        • S(b);N_GUARD::B(E),XS(b)
      • Refutation
        • S(b);XQ(H)
  • Actual
    • Q(H);
    • Vars
      • K(d);P_SPINP(a),S_FLIGHT::S(C)
      • K(d);P_SPINP(c),S_FLIGHT::R1(D),XP(c)
      • S(b);N_GUARD::B(E)
      • S(b);N_GUARD::B(E),XS(b)
      • S(b);OGATE::QAB(H)
      • P(a);::QAR1(H),XP(e)
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