MESON Chess Problem Database

Problem Display
PID: 17785 (7q/2B3p1/2p4r/P1kP2Pp/Q2N1N2/n3pK2/4B3/1rb5 w - - 0 1)

Stocchi, Ottavio

Schach-Magazin, 1949

7q/2B3p1/2p4r/P1kP2Pp/Q2N1N2/n3pK2/4B3/1rb5

#2

9 + 10

5862 An ABC of Chess Problems 1970
4640 Chess Wizardry: The New ABC of Chess Problems 1996
3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sb3#
    • 1...Rb3
      • 2.Sxb3#
    • 1...Re6
      • 2.Sdxe6#
    • 1...Rh7
      • 2.Sde6#
    • 1...Bb2
      • 2.Sb3#
    • 1...Sc2
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sb5
      • 2.Qc4#
    • 1...cxd5
      • 2.Sd3#
    • 1...g6
      • 2.Sde6#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qd4#
      • 1...cxd5
        • 2.Sd3#
      • 1...Bb2
        • 2.Bb6#
      • 1...Sc2
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb5
        • 2.Bb6#
        • 2.Qc4#
      • 1...g6
        • 2.Bd6#
      • 1...Rb4!
    • 1.Sfe6+?
      • 1...Kxd5
        • 2.Qxc6#
      • 1...Rxe6!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Qd4#
      • 1...Sxc2
        • 2.Qc4#
      • 1...cxd5
        • 2.Sd3#
      • 1...Rb4
        • 2.Qxb4#
      • 1...Bb2
        • 2.Qb4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb5
        • 2.Qc4#
      • 1...g6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::S(D)
    • R(a);N_GUARD::S(D),XR(a)
    • R(h);N_GUARD::S(D),XR(h)
    • R(h);N_GUARD::S(D)
    • B(b);S_CUTR(a)::S(D)
    • S(c);N_GUARD::QAR1(C)
    • S(c);N_GUARD::QAR1(C),XS(c)
    • P(g);SBLOCK,XP(G)::S(E)
    • P(i);S_CUTR(h)::S(D)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(C)
      • Vars
        • P(g);SBLOCK,XP(G)::S(E)
        • B(b);S_CUTR(a)::B(I)
        • S(c);N_GUARD::QAR1(C)
        • S(c);N_GUARD::QAR1(C),XS(c)
        • P(i);S_CUTR(h)::B(I)
      • Refutation
        • R(a);
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(G)::QAB1(C),XP(g)
      • Refutation
        • R(h);XS(E)
  • Actual
    • S(D);
    • Threat
      • QAB1(C)
    • Vars
      • S(c);N_GUARD,XS(D)::QAR1(C)
      • P(g);SBLOCK,XP(G)::S(E)
      • R(a);N_GUARD::QAB1(C),XR(a)
      • B(b);S_CUTR(a)::QAB1(C)
      • S(c);N_GUARD::QAR1(C),XS(c)
      • S(c);N_GUARD::QAR1(C)
      • P(i);S_CUTR(h)::QAR1(C),XP(g)
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