MESON Chess Problem Database

Problem Display
PID: 28593 (nQ1nq3/1BrP1p2/2p2R2/1N4P1/4kNP1/2r1P3/1Bb2K2/b7 w - - 0 1)

Stocchi, Ottavio

4th HM., Pauly MT, 1934-1935

nQ1nq3/1BrP1p2/2p2R2/1N4P1/4kNP1/2r1P3/1Bb2K2/b7

#2

11 + 10

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Sd6#
    • 1...Rb3
      • 2.Sd6#
    • 1...Rxe3
      • 2.Sd6#
    • 1...Rc4
      • 2.Sd6#
    • 1...Rc5
      • 2.Sd6#
    • 1...Rxb7
      • 2.Sxc3#
    • 1...Rxd7
      • 2.Sxc3#
    • 1...Rc8
      • 2.Sxc3#
    • 1...Sxb7
      • 2.Qxe8#
  • Tries
    • 1.dxe8Q+?
      • 1...Re7
        • 2.Sxc3#
      • 1...Se6!
    • 1.dxe8R+?
      • 1...Re7
        • 2.Sxc3#
      • 1...Se6!
  • Keys
    • 1.Rxc6!
      • threat
        • 2.Re6#
      • 1...Ke5
        • 2.Rc5#
      • 1...Rxe3
        • 2.Rc4#
      • 1...R3xc6
        • 2.Sd6#
      • 1...R7xc6
        • 2.Sxc3#
      • 1...Rxb7
        • 2.Sxc3#
      • 1...Sxc6
        • 2.Qxe8#
      • 1...Sxb7
        • 2.Qxe8#
      • 1...Qe5
        • 2.Rc4#
      • 1...Qe6
        • 2.Rxe6#
      • 1...Se6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • R(c);::S(F)
    • R(c);XP(C)::S(F)
    • R(f);N_SPINP(e),XB(I)::S(F),XR(c)
    • R(f);XP(J)::S(F),XR(c)
    • R(f);::S(F),XR(c)
    • S(i);N_SPINP(e),OGATE,XB(I)::QAR(K),XQ(j)
  • Tries
    • Try
      • P(J);CHECK,XQ(j)
      • Vars
        • R(f);P_SPINR(f)::S(F),XR(c)
      • Refutation
        • S(i);P_SPINS(i)
    • Try
      • P(J);CHECK,XQ(j)
      • Vars
        • R(f);P_SPINR(f)::S(F),XR(c)
      • Refutation
        • S(i);P_SPINS(i)
  • Actual
    • R(H);XP(e)
    • Threat
      • B(I)+R(H),DCHECK
    • Vars
      • K(d);P-FLIGHT,P_SPINR(c)::R(H)
      • R(c);XP(C)::B(I)+R(H),DCHECK
      • R(c);P_SPINR(c),XR(H)::S(F)
      • R(f);P_SPINR(f),XR(H)::S(F),XR(c)
      • R(f);XB(I)::S(F),XR(c)
      • S(i);OGATE,P_SPINS(i),XR(H)::QAR(K),XQ(j)
      • S(i);OGATE,XB(I)::QAR(K),XQ(j)
      • Q(j);SBLOCK::B(I)+R(H),DCHECK
      • Q(j);::B(I)+R(H),DCHECK,XQ(j)
      • S(i);::B(I)+R(H),DCHECK,XS(i)
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