MESON Chess Problem Database
Problem Display
PID: 62025 (2nr4/b4pNN/q3bB1p/1pPR3r/1P2kPp1/p2R2P1/K2pp3/1Q6 w - - 0 1)
Ellerman, Arnoldo
L'Alfiere di Re, 1926
#2
11 + 14
| 81 | Chess | 1943 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qxh1#
- 1...Re5
- 2.Qh1#
- 1...Rf5
- 2.Qh1#
- 1...Rg5
- 2.Qh1#
- 1...Bxd5+
- 2.Rb3#
- 1...Bf5
- 2.Re5#
- 1...Bd7
- 2.R5d4#
- 1...Rh1
- Tries
- 1.Sg5+?
- 1...Rxg5
- 2.Qh1#
- 1...hxg5!
- 1...Rxg5
- 1.Bb2?
- threat
- 2.Sf6#
- 1...Bxd5+
- 2.Rb3#
- 1...Rf5
- 2.Qh1#
- 1...Bf5
- 2.Re5#
- 1...Bd7
- 2.R5d4#
- 1...f6
- 2.Sxf6#
- 1...axb2+!
- threat
- 1.Bc3?
- threat
- 2.Sf6#
- 1...Rf5
- 2.Qh1#
- 1...Bf5
- 2.Re5#
- 1...Bd7
- 2.R5d4#
- 1...f6
- 2.Sxf6#
- 1...Bxd5+!
- threat
- 1.Bh4?
- threat
- 2.Sf6#
- 2.Qh1#
- 1...Rxh4
- 2.Sf6#
- 1...Rhxd5
- 2.Sf6#
- 1...Rdxd5
- 2.Sf6#
- 1...d1Q
- 2.Sf6#
- 1...d1S
- 2.Sf6#
- 1...d1B
- 2.Sf6#
- 1...d1R
- 2.Sf6#
- 1...e1Q
- 2.Sf6#
- 1...e1S
- 2.Sf6#
- 1...e1B
- 2.Sf6#
- 1...e1R
- 2.Sf6#
- 1...Rf5
- 2.Qh1#
- 1...Bf5
- 2.Re5#
- 2.Qh1#
- 1...Bd7
- 2.R5d4#
- 2.Qh1#
- 1...f6
- 2.Sxf6#
- 2.Qh1#
- 1...Bxd5+!
- threat
- 1.Be5?
- threat
- 2.Sf6#
- 1...Bxd5+
- 2.Rb3#
- 1...Rf5
- 2.Qh1#
- 1...Bd7
- 2.R5d4#
- 1...f6
- 2.Sxf6#
- 1...Bf5!
- threat
- 1.Bg5?
- threat
- 2.Sf6#
- 1...Bf5
- 2.Re5#
- 1...Bd7
- 2.R5d4#
- 2.Re5#
- 1...f6
- 2.Sxf6#
- 1...Bxd5+!
- threat
- 1.Be7?
- threat
- 2.Sf6#
- 1...Rf5
- 2.Qh1#
- 1...Bf5
- 2.Re5#
- 1...Bd7
- 2.R5d4#
- 1...f6
- 2.Sxf6#
- 1...Bxd5+!
- threat
- 1.Bxd8?
- threat
- 2.Sf6#
- 1...Rf5
- 2.Qh1#
- 1...Bf5
- 2.R5d4#
- 2.Re5#
- 1...Bd7
- 2.R5d4#
- 1...f6
- 2.Sxf6#
- 1...Bxd5+!
- threat
- 1.Re3+?
- 1...Kxd5
- 2.Qe4#
- 1...Kxe3!
- 1...Kxd5
- 1.Qg1?
- threat
- 2.Qe3#
- 2.Qd4#
- 2.Qg2#
- 1...Rhxd5
- 2.Re3#
- 2.Qe3#
- 1...Rdxd5
- 2.Re3#
- 2.Qe3#
- 1...Bxc5
- 2.Qg2#
- 1...d1S
- 2.Qd4#
- 2.Qg2#
- 1...e1Q
- 2.Qd4#
- 2.Qg2#
- 1...e1S
- 2.Qe3#
- 2.Qd4#
- 1...e1R
- 2.Qd4#
- 2.Qg2#
- 1...Rh2
- 2.Qe3#
- 2.Qd4#
- 1...Bxd5+!
- threat
- 1.Qb3?
- threat
- 2.Re3#
- 2.R3d4#
- 1...Rhxd5
- 2.Re3#
- 1...Rdxd5
- 2.Re3#
- 1...d1Q
- 2.Re3#
- 1...d1S
- 2.R3d4#
- 1...d1R
- 2.Re3#
- 1...e1Q
- 2.R3d4#
- 1...e1R
- 2.R3d4#
- 1...Bxc5!
- threat
- 1.Sg5+?
- Keys
- 1.Ba1!
- threat
- 2.Sf6#
- 1...Bxd5+
- 2.Rb3#
- 1...Rf5
- 2.Qh1#
- 1...Bf5
- 2.Re5#
- 1...Bd7
- 2.R5d4#
- 1...f6
- 2.Sxf6#
- threat
- 1.Ba1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(g);N_GUARD::QAB(A),XR(g)
- R(g);N_GUARD::QAB(A)
- B(i);CHECK,SBLOCK,XR(H)::QAB(A)+R(C)
- B(i);N_PINR(H)::R1(H)
- Tries
- Try
- S(K);CHECK
- Vars
- R(g);XS(K)::QAB(A)
- Refutation
- P(j);XS(K)
- Try
- B(I);
- Threat
- S(K)
- Vars
- B(i);CHECK,SBLOCK,XR(H)::QAB(A)+R(C)
- R(g);N_GUARD::QAB(A)
- B(i);N_PINR(H)::R1(H)
- P(l);::S(K),XP(l)
- Refutation
- P(c);CHECK,XB(I)
- Try
- B(I);
- Threat
- S(K)
- Vars
- R(g);N_GUARD::QAB(A)
- B(i);N_PINR(H)::R1(H)
- P(l);::S(K),XP(l)
- Refutation
- B(i);CHECK,XR(H)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(g);XB(I)::S(K)
- R(g);XR(H)::S(K)
- R(n);XR(H)::S(K)
- P(a);::S(K)
- P(b);::S(K)
- R(g);::QAB(A)
- Refutation
- B(i);CHECK,XR(H)
- Try
- B(I);
- Threat
- S(K)
- Vars
- B(i);CHECK,SBLOCK,XR(H)::QAB(A)+R(C)
- R(g);N_GUARD::QAB(A)
- B(i);N_PINR(H)::R1(H)
- P(l);::S(K),XP(l)
- Refutation
- B(i);N_PINR(H)
- Try
- B(I);
- Threat
- S(K)
- Vars
- B(i);N_PINR(H)::R1(H)
- P(l);::S(K),XP(l)
- Refutation
- B(i);CHECK,XR(H)
- Try
- B(I);
- Threat
- S(K)
- Vars
- R(g);N_GUARD::QAB(A)
- B(i);N_PINR(H)::R1(H)
- P(l);::S(K),XP(l)
- Refutation
- B(i);CHECK,XR(H)
- Try
- B(I);XR(n)
- Threat
- S(K)
- Vars
- R(g);N_GUARD::QAB(A)
- B(i);N_PINR(H)::R1(H)
- P(l);::S(K),XP(l)
- Refutation
- B(i);CHECK,XR(H)
- Try
- R(C);CHECK
- Vars
- K(d);S_FLIGHT,XR(H)::QAB1(A)
- Refutation
- K(d);P-FLIGHT,XR(C)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(k);XP(G)::QAB(A)
- Refutation
- B(i);CHECK,XR(H)
- Try
- Q(A);N_SPINR(H)
- Threat
- DUALS(2)
- Vars
- R(g);XR(H)::R1(C)
- R(n);XR(H)::R1(C)
- P(a);::R1(C)
- P(b);::R1(C)
- Refutation
- B(k);XP(G)
- Try
- Actual
- B(I);
- Threat
- S(K)
- Vars
- B(i);CHECK,SBLOCK,XR(H)::QAB(A)+R(C)
- R(g);N_GUARD::QAB(A)
- B(i);N_PINR(H)::R1(H)
- P(l);::S(K),XP(l)
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