MESON Chess Problem Database

Problem Display
PID: 67890 (nBK2N2/3P3r/ppQ5/1b2PkP1/1R3N2/4p3/2r1P3/1Bq3R1 w - - 0 1)

Stocchi, Ottavio

2nd HM., Galitzky MT, 1963-1964

nBK2N2/3P3r/ppQ5/1b2PkP1/1R3N2/4p3/2r1P3/1Bq3R1

#2

12 + 9

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7
      • 2.Qe4#
      • 2.Qf6#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Rf4#
      • 1...Bc4
        • 2.Qg6#
      • 1...Sc7
        • 2.Qf6#
      • 1...Qf1
        • 2.Sxe3#
      • 1...Rh4
        • 2.Se7#
      • 1...Qxg1!
    • 1.Bxc2+?
      • 1...Bd3
        • 2.Bxd3#
        • 2.Qe6#
        • 2.Qf6#
        • 2.Qg6#
      • 1...Qxc2!
  • Keys
    • 1.S4e6!
      • threat
        • 2.Rf4#
      • 1...Sc7
        • 2.Qe4#
      • 1...Qf1
        • 2.Rxf1#
      • 1...Rh4
        • 2.Sg7#
      • 1...Bc4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(D)
      • Vars
        • B(d);N_PINQ(H)::QAB1(H)
        • S(i);N_PINQ(H)::QAR1(H)
        • Q(a);N_GUARD::S(E),XP(c)
        • R(h);N_GUARD::S(E)
      • Refutation
        • Q(a);XR(B)
    • Try
      • B(A);CHECK,N_SPINQ(H),XR(b)
      • Refutation
        • Q(a);P_PINQ(H),XB(A)
  • Actual
    • S(E);
    • Threat
      • R1(D)
    • Vars
      • S(i);N_PINQ(H)::QAB1(H)
      • Q(a);N_GUARD::R(B),XQ(a)
      • R(h);N_GUARD::S(E)
      • B(d);N_PINQ(H)::QAR2(H)
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