MESON Chess Problem Database
Problem Display
PID: 74365 (8/n2K1Rp1/1Qpp2N1/3k1pb1/1P5r/1P1B3b/2NR4/6B1 w - - 0 1)
Cristoffanini, Guido
L'Italia Scacchistica, 1925
#2
10 + 9
| 133 | The Problemist Supplement | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Rxb4
- 2.Sxb4#
- 1...Rc4
- 2.bxc4#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Bc4#
- 1...Rf4
- 2.Se3#
- 1...Rg4
- 2.Rxf5#
- 1...Rh5
- 2.Qd4#
- 1...Rh6
- 2.Qd4#
- 1...Rh7
- 2.Qd4#
- 1...Rh8
- 2.Qd4#
- 1...Bf1
- 2.Rxf5#
- 1...Bg2
- 2.Rxf5#
- 1...Bg4
- 2.Qd4#
- 1...Be3
- 2.Sxe3#
- 1...Bf4
- 2.Qd4#
- 1...Bf6
- 2.Se3#
- 1...Be7
- 2.Se3#
- 1...Bd8
- 2.Se3#
- 1...Sb5
- 2.Qxc6#
- 1...Sc8
- 2.Qxc6#
- 1...f4+
- 2.Bf5#
- 1...c5
- 2.Qxd6#
- 1...Rxb4
- Tries
- 1.Sf4+?
- 1...Ke5
- 2.Qe3#
- 2.Qd4#
- 1...Bxf4
- 2.Qd4#
- 1...Rxf4!
- 1...Ke5
- 1.Be2+?
- 1...Ke4
- 2.Rd4#
- 2.Qd4#
- 1...Rd4
- 2.Bf3#
- 2.Rxd4#
- 2.Qxd4#
- 1...Bxd2!
- 1...Ke4
- 1.Bxf5+?
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bxd2!
- 1...Rd4
- 1.Rf6?
- threat
- 2.Rxd6#
- 1...f4+
- 2.Bf5#
- 1...Bxf6
- 2.Se3#
- 1...Bf4
- 2.Qd4#
- 1...Sb5
- 2.Qxc6#
- 1...Sc8
- 2.Qxc6#
- 1...gxf6!
- threat
- 1.Re7?
- threat
- 2.Bc4#
- 2.Be4#
- 1...f4+
- 2.Bf5#
- 1...Bxe7
- 2.Se3#
- 1...Re4
- 2.Bc4#
- 2.Bxe4#
- 1...Rc4
- 2.Bxc4#
- 2.Be4#
- 2.bxc4#
- 1...Rd4
- 2.Bc4#
- 2.Qxd4#
- 1...Bxd2!
- threat
- 1.Qe3?
- threat
- 2.Bc4#
- 2.Be4#
- 2.Qe6#
- 1...f4+
- 2.Bf5#
- 1...Re4
- 2.Bc4#
- 2.Bxe4#
- 1...Rc4
- 2.Bxc4#
- 2.Be4#
- 2.Qe6#
- 2.bxc4#
- 1...Rd4
- 2.Bc4#
- 2.Qxd4#
- 2.Qe6#
- 1...Bxe3!
- threat
- 1.Sf4+?
- Keys
- 1.Bh2!
- 1...f4+
- 2.Bf5#
- 1...Rxb4
- 2.Sxb4#
- 1...Bxd2
- 2.Se7#
- 1...Rc4
- 2.bxc4#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Bc4#
- 1...Rf4
- 2.Se3#
- 1...Rg4
- 2.Rxf5#
- 1...Rh5
- 2.Qd4#
- 1...Rh6
- 2.Qd4#
- 1...Rh7
- 2.Qd4#
- 1...Rh8
- 2.Qd4#
- 1...Bf1
- 2.Rxf5#
- 1...Bg2
- 2.Rxf5#
- 1...Bg4
- 2.Qd4#
- 1...Be3
- 2.Sxe3#
- 2.Se7#
- 1...Bf4
- 2.Qd4#
- 1...Bf6
- 2.Se3#
- 1...Bh6
- 2.Se7#
- 1...Be7
- 2.Se3#
- 2.Sxe7#
- 1...Bd8
- 2.Se3#
- 1...Sb5
- 2.Qxc6#
- 1...Sc8
- 2.Qxc6#
- 1...c5
- 2.Qxd6#
- 1...f4+
- 1.Bh2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(b);XP(F)::S(B),XR(b)
- R(b);OGATE::P(D),XR(b)
- R(b);N_GUARD::QAR1(G),XR(b)
- R(b);SBLOCK::R(C)+B(E),DCHECK
- R(b);S_CUTB(e)::S(B)
- R(b);S_CUTB(a)::R(J),XP(d)
- R(b);N_GUARD::QAR1(G)
- B(a);N_GUARD::R(J),XP(d)
- B(a);S_CUTR(b)::QAR1(G)
- B(e);N_GUARD::S(B),XB(e)
- B(e);S_CUTR(b)::QAR1(G)
- B(e);N_GUARD::S(B)
- S(h);N_GUARD::QAB1(G),XP(f)
- P(d);CHECK,S_CUTB(e),S_CUTR(b)::R(C)+B(E)
- P(f);OGATE::QAR1(G),XP(g)
- Tries
- Try
- S(H);CHECK
- Vars
- B(e);XS(H)::QAR1(G)
- Refutation
- R(b);XS(H)
- Try
- B(E);CHECK
- Refutation
- B(e);XR(C)
- Try
- B(E);CHECK,P_SPINB(E),XP(d)
- Refutation
- B(e);XR(C)
- Try
- R(J);
- Threat
- R1(J),XP(g)
- Vars
- P(d);CHECK,S_CUTB(e),S_CUTR(b)::R(C)+B(E)
- B(e);N_GUARD,XR(J)::S(B)
- B(e);S_CUTR(b)::QAR1(G)
- S(h);N_GUARD::QAB1(G),XP(f)
- Refutation
- P(i);XR(J)
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- P(d);CHECK,S_CUTB(e),S_CUTR(b)::R(C)+B(E)
- B(e);N_GUARD,XR(J)::S(B)
- Refutation
- B(e);XR(C)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- P(d);CHECK,S_CUTR(b)::R(C)+B(E)
- Refutation
- B(e);XQ(G)
- Try
- Actual
- B(A);
- Vars
- P(d);CHECK,S_CUTB(e),S_CUTR(b)::R(C)+B(E)
- R(b);XP(F)::S(B),XR(b)
- B(e);N_GUARD,XR(C)::S(H)
- R(b);OGATE::P(D),XR(b)
- R(b);N_GUARD::QAR1(G),XR(b)
- R(b);SBLOCK::R(C)+B(E),DCHECK
- R(b);S_CUTB(e)::S(B)
- R(b);S_CUTB(a)::R(J),XP(d)
- R(b);N_GUARD::QAR1(G)
- B(a);N_GUARD::R(J),XP(d)
- B(a);S_CUTR(b)::QAR1(G)
- B(e);S_CUTR(b)::QAR1(G)
- B(e);N_GUARD::S(B)
- B(e);N_GUARD::S(H)
- S(h);N_GUARD::QAB1(G),XP(f)
- P(f);OGATE::QAR1(G),XP(g)
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