MESON Chess Problem Database

Problem Display
PID: 67209 (2B5/6pK/2bp2p1/5Q1p/1P1kpn1R/1PN3Br/1P1nP1N1/2bR4 w - - 0 1)

Stocchi, Ottavio

5th HM., Die Schwalbe, 1954/II

2B5/6pK/2bp2p1/5Q1p/1P1kpn1R/1PN3Br/1P1nP1N1/2bR4

#2

12 + 11

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Qxe4#
    • 1...Bb5
      • 2.Sxb5#
      • 2.Qxe4#
    • 1...Bd5
      • 2.Sb5#
    • 1...Bb7
      • 2.Sb5#
    • 1...Bd7
      • 2.Qxe4#
    • 1...Ba8
      • 2.Sb5#
    • 1...Be8
      • 2.Qxe4#
    • 1...Sd3
      • 2.e3#
    • 1...Sd5
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Se6
      • 2.Qf2#
  • Tries
    • 1.Bf2+?
      • 1...Re3
        • 2.Bxe3#
      • 1...e3!
    • 1.Rxd2+?
      • 1...Sd3
        • 2.Rxd3#
        • 2.Qf2#
        • 2.e3#
      • 1...Bxd2!
    • 1.Qxf4?
      • threat
        • 2.Qe3#
        • 2.Qf2#
      • 1...Rxh4
        • 2.Bf2#
        • 2.Qe3#
      • 1...Bxb2
        • 2.Qxd2#
        • 2.Qe3#
      • 1...Rxg3!
    • 1.Qd5+?
      • 1...Sxd5
        • 2.Rxe4#
      • 1...Bxd5!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxg7#
      • 1...Ke5
        • 2.Qxg7#
      • 1...Sxe2
        • 2.Qc4#
      • 1...Sxg2
        • 2.Qa7#
      • 1...Sd3
        • 2.e3#
      • 1...Sd5
        • 2.Rxe4#
      • 1...Se6
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • B(h);N_GUARD::QAR1(J),XP(e)
    • B(h);N_GUARD::S(F)
    • S(f);N_SPINS(b),P_SPINP(e),SBLOCK::P(C)
    • S(f);OGATE,P_SPINP(e)::QAB(J)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(G),XR(c)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • R(A);CHECK,XS(b)
      • Refutation
        • B(a);XR(A)
    • Try
      • Q(J);P_PINP(e),XS(f)
      • Threat
        • DUALS(2)
      • Refutation
        • R(c);XB(G)
    • Try
      • Q(J);CHECK
      • Vars
        • S(f);OGATE,P_SPINP(e),XQ(J)::R1(I),XP(e)
      • Refutation
        • B(h);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • QAB(J),XP(k)
    • Vars
      • K(d);N_SPINS(b),P_SPINS(f),S_FLIGHT::QAB(J),XP(k)
      • S(f);P_SPINP(e),XP(C)::QAR1(J)
      • S(f);P_SPINP(e),XS(D)::QAB(J)
      • S(f);N_SPINS(b),P_SPINP(e),SBLOCK::P(C)
      • S(f);OGATE,P_SPINP(e)::R1(I),XP(e)
      • S(f);OGATE,P_SPINP(e)::QAB(J)
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