MESON Chess Problem Database
Problem Display
PID: 34432 (2rQ2n1/1q1p1p1K/1p2B3/4kpNN/r1R3p1/2PR2P1/bB6/8 w - - 0 1)
Stocchi, Ottavio
2nd Prize, Problemisten TT, 1950
#2
10 + 11
| 3100 | Selected Stocchi (I) | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Rxd5#
- 1...Qa6
- 2.Rd5#
- 1...Qa7
- 2.Rd5#
- 1...Qc7
- 2.Rd5#
- 1...Qb8
- 2.Rd5#
- 1...Rb4
- 2.cxb4#
- 1...Rc6
- 2.Rd5#
- 1...Sf6+
- 2.Qxf6#
- 1...Sh6
- 2.Qf6#
- 1...f4
- 2.gxf4#
- 1...dxe6
- 2.Qd4#
- 2.Qd6#
- 1...d5
- 2.Re3#
- 1...d6
- 2.Qxd6#
- 1...fxe6
- 2.Sf7#
- 1...Qd5
- Tries
- 1.Re3+?
- 1...Kd6
- 2.Sxf7#
- 1...Qe4!
- 1...Kd6
- 1.Qxb6?
- threat
- 2.Sxf7#
- 2.Qd4#
- 2.Qd6#
- 1...Qxb6
- 2.Rd5#
- 1...Raxc4
- 2.Qd6#
- 1...Rcxc4
- 2.Qd6#
- 1...Bxc4
- 2.Qd4#
- 2.Qd6#
- 1...dxe6
- 2.Qd4#
- 2.Qd6#
- 1...fxe6
- 2.Sf7#
- 2.Qd4#
- 2.Qd6#
- 1...Qe4
- 2.Sxf7#
- 2.Qd6#
- 1...Qd5
- 2.Sxf7#
- 2.Rxd5#
- 1...Qa6
- 2.Sxf7#
- 2.Re3#
- 2.Rd5#
- 2.Qe3#
- 2.Qd4#
- 1...Qc6
- 2.Qd4#
- 1...Qa7
- 2.Sxf7#
- 2.Re3#
- 2.Rd5#
- 2.Qd6#
- 1...Qc7
- 2.Sxf7#
- 2.Re3#
- 2.Rd5#
- 2.Qe3#
- 2.Qd4#
- 1...Qb8
- 2.Sxf7#
- 2.Re3#
- 2.Rd5#
- 2.Qe3#
- 2.Qd4#
- 1...Ra6
- 2.Sxf7#
- 2.Qd4#
- 1...Rc5
- 2.Sxf7#
- 2.Qd6#
- 1...Rc6
- 2.Rd5#
- 2.Qe3#
- 2.Qd4#
- 1...Rf8
- 2.Qd4#
- 2.Qd6#
- 1...Sh6
- 2.Qd4#
- 2.Qd6#
- 1...d5
- 2.Re3#
- 1...d6
- 2.Qd4#
- 2.Qxd6#
- 1...f6
- 2.Sf7#
- 2.Qd4#
- 2.Qd6#
- 1...Sf6+!
- threat
- 1.Qc7+?
- 1...Qxc7
- 2.Rd5#
- 1...d6
- 2.Qxd6#
- 1...Rxc7!
- 1...Qxc7
- 1.Qe7?
- threat
- 2.Sxf7#
- 2.Qd6#
- 1...Sf6+
- 2.Qxf6#
- 1...Raxc4
- 2.Qd6#
- 1...Rcxc4
- 2.Qd6#
- 1...Bxc4
- 2.Qd6#
- 1...fxe6
- 2.Sf7#
- 2.Qd6#
- 1...Qd5
- 2.Sxf7#
- 2.Rxd5#
- 1...Qc6
- 2.Sxf7#
- 1...Qc7
- 2.Sxf7#
- 2.Re3#
- 2.Rd5#
- 1...Qb8
- 2.Sxf7#
- 2.Re3#
- 2.Rd5#
- 1...Rc6
- 2.Sxf7#
- 2.Re3#
- 2.Rd5#
- 1...Rf8
- 2.Qd6#
- 1...Sh6
- 2.Bd5#
- 2.Bxd7#
- 2.Bxf7#
- 2.Qd6#
- 2.Qf6#
- 1...d5
- 2.Sxf7#
- 2.Re3#
- 1...d6
- 2.Sxf7#
- 2.Qxd6#
- 1...f6
- 2.Sf7#
- 2.Bxg8#
- 2.Qd6#
- 1...Sxe7!
- threat
- 1.Re3+?
- Keys
- 1.Rc6!
- threat
- 2.c4#
- 1...Sf6+
- 2.Qxf6#
- 1...Ra3
- 2.Re3#
- 1...Rb4
- 2.cxb4#
- 1...Rc4
- 2.Rd5#
- 1...Rd4
- 2.cxd4#
- 1...Re4
- 2.Sxf7#
- 1...Rf4
- 2.gxf4#
- 1...Bc4
- 2.Re3#
- 1...d5
- 2.Qd6#
- threat
- 1.Rc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 10
- Sets
- Q(g);N_GUARD::R1(C),XQ(g)
- Q(g);N_GUARD::R1(C)
- R(b);OGATE::B(A)+P(B),XR(b)
- R(j);S_CUTQ(g)::R1(C)
- S(k);CHECK,N_GUARD::QAB1(J),XS(k)
- S(k);N_GUARD::QAB1(J)
- P(e);OGATE::P(D),XP(e)
- P(h);S_CUTQ(g)::R(C)
- P(h);OGATE::QAB1(J),XP(h)
- P(i);SBLOCK,XB(H)::S(F)
- Tries
- Try
- R(C);CHECK
- Vars
- K(d);P_SPINP(h),S_FLIGHT::S(F),XP(i)
- Refutation
- Q(g);P_SPINQ(g)
- Try
- Q(J);XP(f)
- Threat
- DUALS(3)
- Vars
- Q(g);N_GUARD,XQ(J)::R1(C)
- R(b);XR(E)::QAB1(J)
- R(j);XR(E)::QAB1(J)
- Q(g);::QAB1(J)
- P(h);S_CUTQ(g)::R(C)
- Refutation
- S(k);CHECK
- Try
- Q(J);CHECK
- Vars
- Q(g);XQ(J)::R1(C)
- P(h);P_SPINP(h)::QAB1(J),XP(h)
- Refutation
- R(j);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- S(k);CHECK,N_GUARD::QAB1(J),XS(k)
- R(b);XR(E)::QAB1(J)
- R(j);XR(E)::QAB1(J)
- B(a);XR(E)::QAB1(J)
- Q(g);::S(F),XP(i)
- R(j);::QAB1(J)
- Refutation
- S(k);XQ(J)
- Try
- Actual
- R(E);
- Threat
- B(A)+P(B)
- Vars
- S(k);CHECK,N_GUARD::QAB1(J),XS(k)
- R(b);N_GUARD::R(C)
- R(b);OGATE::B(A)+P(B),XR(b)
- R(b);S_CUTB(a)::R1(C)
- R(b);OGATE::P(B),XR(b)
- R(b);SBLOCK::S(F),XP(i)
- R(b);OGATE::P(D),XR(b)
- B(a);S_CUTR(b)::R(C)
- P(h);OGATE::QAB1(J)
Developed and maintained by Brian Stephenson.
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