MESON Chess Problem Database
Problem Display
PID: 261365 (1q2rb2/2n3P1/1P1p3R/r3k1Bn/1p3NP1/2p2Pp1/2B1N1Q1/3RK3 w - - 0 1)
Petite, Efren
Neue Zurcher Zeitung, 1991
#2
12 + 11
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Sxf4
- 2.Bxf4#
- 1...Sf6
- 2.Bxf6#
- 1...Sxg7
- 2.Bf6#
- 1...Sb5
- 2.Rd5#
- 1...Sd5
- 2.Sd3#
- 1...Se6
- 2.Sg6#
- 1...d5
- 2.Sd3#
- 1...Sxf4
- Tries
- 1.Sxh5?
- threat
- 2.Bf4#
- 2.Qxg3#
- 2.f4#
- 1...Se6
- 2.Bf6#
- 1...Sd5!
- threat
- 1.Bb3?
- threat
- 2.Sd3#
- 2.Sg6#
- 1...Sxf4
- 2.Bxf4#
- 2.Bf6#
- 1...Re6
- 2.Sd3#
- 1...Sd5
- 2.Sd3#
- 1...d5
- 2.Sd3#
- 1...Rd5!
- threat
- 1.Be4?
- threat
- 2.Sd3#
- 1...Sxf4
- 2.Bxf4#
- 1...Sf6
- 2.Bxf6#
- 1...Rd5!
- threat
- 1.Bf5?
- threat
- 2.Sg6#
- 1...Sxf4
- 2.Bxf4#
- 2.Bf6#
- 1...d5
- 2.Sd3#
- 1...Re6!
- threat
- 1.Rd4?
- threat
- 2.Sd3#
- 2.Re4#
- 1...Sxf4
- 2.Bxf4#
- 1...Qb7
- 2.Sd3#
- 1...Qa8
- 2.Sd3#
- 1...Sf6
- 2.Bxf6#
- 1...d5
- 2.Sd3#
- 1...Ra1+!
- threat
- 1.Rd5+?
- 1...Sxd5
- 2.Sd3#
- 1...Rxd5!
- 1...Sxd5
- 1.Rxh5?
- threat
- 2.Bh4#
- 2.Be7#
- 2.Bd8#
- 1...d5
- 2.Be7#
- 1...Qd8
- 2.Be7#
- 2.Bxd8#
- 1...Re7
- 2.Bh4#
- 2.Bxe7#
- 1...Rd8
- 2.Bh4#
- 2.Be7#
- 2.Bxd8#
- 1...Be7
- 2.Bxe7#
- 1...Se6
- 2.Sg6#
- 1...Qc8!
- threat
- 1.Re6+?
- 1...Sxe6
- 2.Sg6#
- 1...Rxe6!
- 1...Sxe6
- 1.Qg1?
- threat
- 2.Qe3#
- 2.Qd4#
- 1...Rd5
- 2.Qe3#
- 1...Qb7
- 2.Qd4#
- 1...Qa8
- 2.Qd4#
- 1...Sf6
- 2.Bxf6#
- 2.Qd4#
- 1...Sb5
- 2.Rd5#
- 2.Qe3#
- 1...Sd5
- 2.Sd3#
- 2.Qd4#
- 1...Se6
- 2.Sg6#
- 2.Qe3#
- 1...Qxb6!
- threat
- 1.gxf8Q?
- threat
- 2.Qxd6#
- 2.Qf5#
- 1...Qxb6
- 2.Qf5#
- 1...Rd5
- 2.Qf5#
- 1...Qc8
- 2.Qxd6#
- 1...Qd8
- 2.Qf5#
- 1...Re6
- 2.Qf5#
- 1...Re7
- 2.Qf5#
- 1...Rd8
- 2.Qf5#
- 1...Sf6
- 2.Bxf6#
- 2.Qxd6#
- 2.Qxf6#
- 1...Sg7
- 2.Bf6#
- 2.Qxd6#
- 2.Qxg7#
- 2.Qf6#
- 1...Sb5
- 2.Rd5#
- 2.Qf5#
- 1...Sd5
- 2.Sd3#
- 2.Qf5#
- 1...Sa6
- 2.Qf5#
- 1...Se6
- 2.Sg6#
- 2.Qf5#
- 1...Sa8
- 2.Qf5#
- 1...d5
- 2.Sd3#
- 2.Qd6#
- 2.Qf5#
- 1...Rxf8!
- threat
- 1.gxf8S?
- threat
- 2.S4g6#
- 2.S8g6#
- 2.Sd7#
- 1...Sxf4
- 2.Sd7#
- 2.Bxf4#
- 2.Bf6#
- 1...Qc8
- 2.S4g6#
- 2.S8g6#
- 1...Qd8
- 2.S4g6#
- 2.S8g6#
- 1...Re6
- 2.Sd7#
- 1...Re7
- 2.S4g6#
- 2.S8g6#
- 1...Rd8
- 2.S4g6#
- 2.S8g6#
- 1...Sf6
- 2.S4g6#
- 2.S8g6#
- 2.Bxf6#
- 1...d5
- 2.Sd3#
- 2.Sd7#
- 1...Rxf8!
- threat
- 1.g8Q?
- threat
- 2.Sd3#
- 2.Sg6#
- 1...Sxf4
- 2.Bxf4#
- 2.Bf6#
- 1...Rd5
- 2.Sg6#
- 1...Se6
- 2.Sg6#
- 1...d5
- 2.Sd3#
- 1...Re6!
- threat
- 1.g8B?
- threat
- 2.Sd3#
- 2.Sg6#
- 1...Sxf4
- 2.Bxf4#
- 2.Bf6#
- 1...Rd5
- 2.Sg6#
- 1...Se6
- 2.Sg6#
- 1...d5
- 2.Sd3#
- 1...Re6!
- threat
- 1.Sxh5?
- Keys
- 1.Qxg3!
- threat
- 2.Sxh5#
- 1...Sxg3
- 2.Bf6#
- 1...Sxf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sxg7
- 2.Sg2#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Se6#
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...Sd5
- 2.Sd3#
- 1...Se6
- 2.Sg6#
- threat
- 1.Qxg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- S(f);OGATE,XS(G)::B(I),XS(f)
- S(f);N_GUARD::B(I),XS(f)
- S(f);N_GUARD,XP(L)::B(I)
- S(h);N_GUARD,S_CUTR(d)::R1(A)
- S(h);SBLOCK::S(G)
- P(g);SBLOCK::S(G)
- Tries
- Try
- S(G);XS(f)
- Threat
- DUALS(3)
- Vars
- S(h);SBLOCK::B(I)
- Refutation
- S(h);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(j);::S(G)
- S(h);::S(G)
- P(g);::S(G)
- Refutation
- R(d);
- Try
- B(C);
- Threat
- S(G)
- Vars
- S(f);OGATE,XS(G)::B(I),XS(f)
- S(f);N_GUARD::B(I),XS(f)
- Refutation
- R(d);
- Try
- B(C);
- Threat
- S(G)
- Vars
- P(g);SBLOCK::S(G)
- Refutation
- R(j);
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- S(f);OGATE,XS(G)::B(I),XS(f)
- Q(i);::S(G)
- S(f);N_GUARD::B(I),XS(f)
- P(g);::S(G)
- Refutation
- R(d);CHECK
- Try
- R(A);CHECK
- Vars
- S(h);SBLOCK,XR(A)::S(G)
- Refutation
- R(d);XR(A)
- Try
- R(K);XS(f)
- Threat
- DUALS(3)
- Vars
- P(g);::R(K)+B(I)
- B(k);::R(K)+B(I),XB(k)
- S(h);SBLOCK::S(G)
- Refutation
- Q(i);
- Try
- R(K);CHECK
- Vars
- S(h);SBLOCK,XR(K)::S(G)
- Refutation
- R(j);XR(K)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(d);::QAR2(E)
- Q(i);::QAB1(E)
- Refutation
- Q(i);XP(J)
- Try
- P(L);XB(k)
- Threat
- DUALS(2)
- Vars
- Q(i);XP(J)::QAR1(L)
- R(d);::QAR1(L)
- Q(i);::QAB1(L),XP(g)
- Q(i);::QAR1(L)
- R(j);::QAR1(L)
- S(h);::QAR1(L)
- Refutation
- R(j);XQ(L)
- Try
- P(L);XB(k)
- Threat
- DUALS(3)
- Vars
- R(j);::S(L)
- Refutation
- R(j);XS(L)
- Try
- P(L);
- Threat
- DUALS(2)
- Vars
- R(d);::S(G)
- S(h);::S(G)
- P(g);::S(G)
- Refutation
- R(j);
- Try
- P(L);
- Threat
- DUALS(2)
- Vars
- R(d);::S(G)
- S(h);::S(G)
- P(g);::S(G)
- Refutation
- R(j);
- Try
- Actual
- Q(E);XP(b)
- Threat
- QAB(E)+S(G),XS(f)
- Vars
- S(f);N_GUARD,XQ(E)::B(I)
- S(f);N_GUARD::B(I),XS(f)
- S(h);SBLOCK::QAB(E)+S(G),DCHECK
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