MESON Chess Problem Database
Problem Display
PID: 231173 (nK1n4/4P1r1/BPk4r/1pB5/7b/P1RRP1pb/8/8 w - - 0 1)
Cristoffanini, Guido
Western Morning News, 1927
#2
9 + 9
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rh5
- 2.Rd6#
- 1...Rd6
- 2.Rxd6#
- 1...Rf6
- 2.exd8S#
- 1...Rhh7
- 2.Rd6#
- 1...Rh8
- 2.Rd6#
- 1...Rg4
- 2.e8Q#
- 2.e8B#
- 1...Rg5
- 2.exd8S#
- 1...Be6
- 2.Rd6#
- 1...Bf6
- 2.Rd6#
- 1...Se6
- 2.Bb7#
- 2.Rd6#
- 1...Sb7
- 2.Bxb7#
- 1...Sf7
- 2.Bb7#
- 1...Rh5
- Tries
- 1.Rxd8?
- threat
- 2.Bd4#
- 2.Bb7#
- 1...Rxe7
- 2.Bd4#
- 1...Bxe7
- 2.Bb7#
- 1...Sxb6
- 2.Bb7#
- 1...Rd6
- 2.Bb7#
- 2.Rxd6#
- 1...Bd7
- 2.Bb7#
- 1...Rh5
- 2.Bb7#
- 2.Rd6#
- 1...Rg5
- 2.Bb7#
- 1...Bf1
- 2.Bb7#
- 1...Be6
- 2.Bb7#
- 2.Rd6#
- 1...Bc8
- 2.Bd4#
- 1...b4!
- threat
- 1.exd8Q?
- threat
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qd5#
- 1...Rb7+
- 2.Bxb7#
- 1...Sxb6
- 2.Bxb6#
- 2.Qxb6#
- 1...Rh5
- 2.Rd6#
- 2.Qd6#
- 1...Rd6
- 2.Bb4#
- 2.Bxd6#
- 2.Rxd6#
- 2.Qxd6#
- 1...Rh8
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Rd6#
- 1...Rg4
- 2.Bd4#
- 2.Bb7#
- 2.Qd5#
- 2.Qd7#
- 2.Qe8#
- 1...Rg5
- 2.Bb7#
- 1...Rc7
- 2.Bd4#
- 2.Qd5#
- 1...Rd7
- 2.Bb4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Re7
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Bxe7#
- 2.Qd5#
- 1...Rg8
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Bb7#
- 1...Bg2
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Be6
- 2.Rd6#
- 2.Qd6#
- 1...Bd7
- 2.Bb4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Bb7#
- 1...Bf6
- 2.Bd4#
- 2.Rd6#
- 2.Qd5#
- 2.Qd6#
- 1...Be7
- 2.Bd6#
- 2.Bxe7#
- 2.Bb7#
- 2.Qd5#
- 1...Sc7
- 2.Bd4#
- 2.Bb7#
- 1...b4
- 2.Bxb4#
- 2.Qd5#
- 1...Bxd8!
- threat
- 1.e8Q+?
- 1...Bd7
- 2.Qe4#
- 1...Rd7!
- 1...Bd7
- 1.Rxd8?
- Keys
- 1.Ka7!
- threat
- 2.Bb4#
- 1...Rxe7+
- 2.Bxe7#
- 1...Bxe7
- 2.Bxe7#
- 1...Sxb6
- 2.Bxb6#
- 1...Rd6
- 2.Rxd6#
- 1...Rh5
- 2.Rd6#
- 1...Rg4
- 2.e8Q#
- 2.e8B#
- 1...Rg5
- 2.exd8S#
- 1...Be6
- 2.Rd6#
- 1...Bf6
- 2.Rd6#
- 1...Se6
- 2.Bb7#
- 2.Rd6#
- 1...Sb7
- 2.Bxb7#
- 1...b4
- 2.Bxb4#
- threat
- 1.Ka7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(f);N_GUARD::R1(C)
- R(f);N_GUARD::R1(C),XR(f)
- R(f);S_CUTB(c)::PXS(i)=S
- R(g);N_GUARD,S_CUTB(b)::P=Q
- R(g);S_CUTB(c)::PXS(i)=S
- B(b);S_CUTR(f)::R1(C)
- B(c);S_CUTR(f)::R1(C)
- S(i);N_GUARD::B(F),XS(i)
- S(i);N_GUARD::B(F)
- Tries
- Try
- R(C);XS(i)
- Threat
- DUALS(2)
- Vars
- R(g);XP(H)::R(B)+B(E)
- B(c);XP(H)::B(F)
- S(h);XP(G)::B(F)
- B(b);::B(F)
- R(g);::B(F)
- B(b);::R(B)+B(E)
- Refutation
- P(d);
- Try
- P(H);XS(i)
- Threat
- DUALS(6)
- Vars
- R(g);CHECK,N_GUARD::B(F),XR(g)
- R(g);N_GUARD::B(F)
- Refutation
- B(c);XQ(H)
- Try
- P(H);CHECK
- Vars
- B(b);P_SPINB(b)::QAB(H)
- Refutation
- R(g);P_SPINR(g)
- Try
- Actual
- K(I);P_SPINP(H),S_FLIGHT
- Threat
- R(B)+B(E)
- Vars
- R(g);CHECK,OGATE,XP(H)::R(B)+B(E),XR(g)
- B(c);OGATE,XP(H)::R(B)+B(E),XB(c)
- S(h);OGATE,XP(G)::R(B)+B(E),XS(h)
- R(f);N_GUARD::R1(C),XR(f)
- R(f);N_GUARD::R1(C)
- R(g);N_PINP(H)::P=Q
- R(g);N_PINP(H)::PXS(i)=S
- B(b);S_CUTR(f)::R1(C)
- B(c);S_CUTR(f)::R1(C)
- S(i);N_GUARD,N_PINP(H)::B(F),XS(i)
- P(d);::R(B)+B(E),XP(d)
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