MESON Chess Problem Database
Problem Display
PID: 63886 (q3R3/1Bp1pp2/1BN1r3/3N1RP1/Qpr1k1Kn/3p4/5P2/8 w - - 0 1)
Stocchi, Ottavio
1st Prize, American Chess Bulletin, 1950
#2
10 + 10
| 45 | Schach | 1952 |
| 5407 | Selected Stocchi (II) | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Sxc3#
- 1...Rcxc6
- 2.Sc3#
- 1...Re5
- 2.Rxe5#
- 1...Rexc6
- 2.Sf6#
- 1...Rd6
- 2.Re5#
- 1...Rf6
- 2.Sxf6#
- 2.Re5#
- 1...Rg6
- 2.Re5#
- 1...Rh6
- 2.Re5#
- 1...Sg2
- 2.f3#
- 1...Sg6
- 2.f3#
- 1...b3
- 2.Sc3#
- 2.Qxc4#
- 1...Rc3
- Tries
- 1.Sc3+?
- 1...bxc3
- 2.Qxc4#
- 1...Rxc3!
- 1...bxc3
- 1.Se3?
- threat
- 2.Rf4#
- 1...Rcxc6
- 2.Qxb4#
- 1...Rexc6
- 2.Rxe7#
- 1...Sxf5
- 2.f3#
- 1...Rf6
- 2.Re5#
- 1...Sg2
- 2.f3#
- 1...Sg6
- 2.f3#
- 1...d2!
- threat
- 1.Sf6+?
- 1...Rxf6
- 2.Re5#
- 1...exf6!
- 1...Rxf6
- 1.Sxc7?
- threat
- 2.Rf4#
- 1...Rcxc6
- 2.Qxb4#
- 1...Rexc6
- 2.Rxe7#
- 1...Sxf5
- 2.f3#
- 1...Rf6
- 2.Re5#
- 1...Sg2
- 2.f3#
- 1...Sg6
- 2.f3#
- 1...d2!
- threat
- 1.Sdxe7?
- threat
- 2.Rf4#
- 1...Rcxc6
- 2.Qxb4#
- 1...Rexc6
- 2.Sc8#
- 1...Rxe7
- 2.Rxe7#
- 1...Sxf5
- 2.f3#
- 1...Rf6
- 2.Re5#
- 1...Sg2
- 2.f3#
- 1...Sg6
- 2.f3#
- 1...d2!
- threat
- 1.Qxb4?
- threat
- 2.Sc3#
- 2.Qe1#
- 2.Qxc4#
- 1...Rxb4
- 2.Sc3#
- 1...Rxc6
- 2.Sc3#
- 2.Sf6#
- 2.Qe1#
- 1...Sxf5
- 2.Sc3#
- 1...Re5
- 2.Sc3#
- 2.Rxe5#
- 2.Qxc4#
- 1...d2
- 2.Qxc4#
- 1...Qa2
- 2.Sc3#
- 1...Qa3
- 2.Qe1#
- 2.Qxc4#
- 1...Qa4
- 2.Sc3#
- 2.Qe1#
- 1...Qa5
- 2.Sc3#
- 2.Qxc4#
- 1...Qa6
- 2.Sc3#
- 2.Qe1#
- 1...Rd4
- 2.Sc3#
- 2.Qe1#
- 2.Qxd4#
- 1...Sg2
- 2.Sc3#
- 2.Qxc4#
- 2.f3#
- 1...Sf3
- 2.Sc3#
- 1...Qa1!
- threat
- 1.Sc3+?
- Keys
- 1.Sdxb4!
- threat
- 2.Rf4#
- 1...Rxb4
- 2.Qxb4#
- 1...Rcxc6
- 2.Sa6#
- 1...Rexc6
- 2.Rxe7#
- 1...Sxf5
- 2.f3#
- 1...Rf6
- 2.Re5#
- 1...Sg2
- 2.f3#
- 1...Sg6
- 2.f3#
- threat
- 1.Sdxb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- R(c);N_GUARD,P_SPINP(b)::S(D),XR(c)
- R(c);N_GUARD,P_SPINP(b),XS(H)::S(D)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD,P_SPINP(h),XS(H)::S(D)
- R(f);N_GUARD,P_SPINP(h)::R1(E)
- R(f);N_GUARD,P_PINP(F),P_SPINP(h)::R1(E)
- S(e);N_GUARD::P(A)
- Tries
- Try
- S(D);CHECK
- Vars
- P(b);OGATE,P_SPINR(c),XS(D)::QAR2(B),XR(c)
- Refutation
- R(c);P_SPINP(b),XS(D)
- Try
- S(D);
- Threat
- R1(E)
- Vars
- R(c);OGATEB,P_SPINP(b),P_SPINR(c),XS(H)::QAR(B),XP(b)
- R(f);OGATEB,P_SPINP(h),P_SPINR(f),XS(H)::R(J),XP(h)
- S(e);N_GUARD,XR(E)::P(A)
- R(f);N_GUARD,P_SPINP(h)::R1(E)
- S(e);N_GUARD::P(A)
- Refutation
- P(a);
- Try
- S(D);CHECK
- Vars
- R(f);P_SPINP(h),XS(D)::R1(E)
- Refutation
- P(h);P_SPINR(f),XS(D)
- Try
- S(D);XP(g)
- Threat
- R1(E)
- Vars
- R(c);OGATEB,P_SPINP(b),P_SPINR(c),XS(H)::QAR(B),XP(b)
- R(f);OGATEB,P_SPINP(h),P_SPINR(f),XS(H)::R(J),XP(h)
- S(e);N_GUARD,XR(E)::P(A)
- R(f);N_GUARD,P_SPINP(h)::R1(E)
- S(e);N_GUARD::P(A)
- Refutation
- P(a);
- Try
- S(D);XP(h)
- Threat
- R1(E)
- Vars
- R(c);OGATEB,P_SPINP(b),P_SPINR(c),XS(H)::QAR(B),XP(b)
- R(f);P_SPINR(f),XS(H)::R(J)+S(D)
- R(f);OGATE,P_SPINR(f),XS(D)::R(J),XR(f)
- S(e);N_GUARD,XR(E)::P(A)
- R(f);N_GUARD::R1(E)
- S(e);N_GUARD::P(A)
- Refutation
- P(a);
- Try
- Q(B);P_PINR(c),XP(b)
- Threat
- DUALS(3)
- Vars
- R(c);N_SPINR(c),XQ(B)::S(D)
- S(e);XR(E)::S(D)
- P(a);::QAR2(B),XR(c)
- Q(j);::S(D)
- S(e);::S(D)
- Refutation
- Q(j);
- Try
- Actual
- S(D);XP(b)
- Threat
- R1(E)
- Vars
- R(c);OGATE,P_SPINR(c),XS(D)::QAR(B),XR(c)
- R(c);P_SPINR(c),XS(H)::QAR(B)+S(D)
- R(f);OGATEB,P_SPINP(h),P_SPINR(f),XS(H)::R(J),XP(h)
- S(e);N_GUARD,XR(E)::P(A)
- R(f);N_GUARD,P_SPINP(h)::R1(E)
- S(e);N_GUARD::P(A)
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