MESON Chess Problem Database
Problem Display
PID: 249920 (q1brrb1n/1pN3p1/8/1P4R1/4k3/pN2P1BB/2KR1PP1/6nQ w - - 0 1)
Lamba, Stelian
Deutsche Schachzeitung, 1969
#2
12 + 11
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxd2+
- 2.Sxd2#
- 1...Rd4
- 2.Rxd4#
- 1...Rd6
- 2.Sc5#
- 1...Rd7
- 2.Bf5#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.Bf5#
- 1...Re7
- 2.Sc5#
- 1...Bf5
- 2.Bxf5#
- 1...Be6
- 2.Re5#
- 1...Bd7
- 2.Rd4#
- 1...Bc5
- 2.Sxc5#
- 1...Bd6
- 2.Rd4#
- 1...Be7
- 2.Re5#
- 1...Sf3
- 2.gxf3#
- 1...Sxh3
- 2.gxh3#
- 1...Rxd2+
- Tries
- 1.Sd5?
- threat
- 2.Sc3#
- 2.Rd4#
- 1...Qa4
- 2.Sc3#
- 1...Qa5
- 2.Rd4#
- 1...Qa7
- 2.Sc3#
- 1...Bb4
- 2.Rd4#
- 1...Bc5
- 2.Sxc5#
- 2.Sc3#
- 1...Se2
- 2.f3#
- 1...Sf3
- 2.Sc3#
- 2.gxf3#
- 1...Rxd5!
- threat
- 1.Se6?
- threat
- 2.Bf5#
- 2.Re5#
- 1...Rxd2+
- 2.Sxd2#
- 1...Rxe6
- 2.Bf5#
- 1...Bxe6
- 2.Re5#
- 1...Sxh3
- 2.Re5#
- 2.gxh3#
- 1...Qb8
- 2.Bf5#
- 1...Rd3
- 2.Re5#
- 1...Rd4
- 2.Rxd4#
- 2.Re5#
- 1...Bd6
- 2.Bf5#
- 2.Rd4#
- 1...Sf3
- 2.Bf5#
- 2.gxf3#
- 1...Sg6
- 2.Bf5#
- 1...Sf7
- 2.Bf5#
- 1...g6
- 2.Re5#
- 1...Rd5!
- threat
- 1.Be6?
- threat
- 2.Rg4#
- 2.Re5#
- 2.Qh4#
- 1...Rxd2+
- 2.Sxd2#
- 1...Rxe6
- 2.Qh4#
- 1...Bxe6
- 2.Re5#
- 1...Rd5
- 2.Bxd5#
- 2.Rg4#
- 2.Qh4#
- 1...Bd6
- 2.Bd5#
- 2.Rd4#
- 1...Se2
- 2.Re5#
- 1...Sf3
- 2.Rg4#
- 2.gxf3#
- 1...Sh3
- 2.Re5#
- 2.gxh3#
- 1...Sf7
- 2.Rg4#
- 2.Qh4#
- 1...Sg6!
- threat
- 1.Bd7?
- threat
- 2.Rd4#
- 2.Rg4#
- 2.Qh4#
- 1...Rxd7
- 2.Qh4#
- 1...Bxd7
- 2.Rd4#
- 1...Qa4
- 2.Rg4#
- 2.Qh4#
- 1...Qa7
- 2.Rg4#
- 2.Qh4#
- 1...Re6
- 2.Rd4#
- 2.Qh4#
- 1...Bc5
- 2.Sxc5#
- 2.Rg4#
- 2.Qh4#
- 1...Bd6
- 2.Rd4#
- 1...Sf3
- 2.Rg4#
- 2.gxf3#
- 1...Sh3
- 2.Rd4#
- 2.gxh3#
- 1...Sg6
- 2.Rd4#
- 1...Se2!
- threat
- 1.Bxc8?
- threat
- 2.Bf5#
- 2.Rg4#
- 2.Qh4#
- 1...Rxd2+
- 2.Sxd2#
- 1...Rxc8
- 2.Rd4#
- 2.Qh4#
- 1...Rd5
- 2.Rg4#
- 2.Qh4#
- 1...Rd7
- 2.Qh4#
- 1...Re5
- 2.Rg4#
- 2.Rxe5#
- 2.Qh4#
- 1...Re6
- 2.Qh4#
- 1...Bd6
- 2.Bf5#
- 2.Rd4#
- 1...Se2
- 2.Bf5#
- 1...Sf3
- 2.Bf5#
- 2.Rg4#
- 2.gxf3#
- 1...Sh3
- 2.Bf5#
- 2.gxh3#
- 1...Sg6
- 2.Bf5#
- 1...g6
- 2.Rg4#
- 2.Qh4#
- 1...Qxc8!
- threat
- 1.Rd6?
- threat
- 2.Sd2#
- 2.Sc5#
- 1...Rxd6
- 2.Sc5#
- 1...Bxd6
- 2.Sd2#
- 1...Qa5
- 2.Sc5#
- 1...Qa7
- 2.Sd2#
- 1...Re5
- 2.Sd2#
- 2.Rxe5#
- 1...Sf3
- 2.Sc5#
- 2.gxf3#
- 1...b6
- 2.Sd2#
- 1...Qa4!
- threat
- 1.Rxd8?
- threat
- 2.Sd2#
- 2.Rd4#
- 1...Rxd8
- 2.Re5#
- 1...Qa5
- 2.Rd4#
- 1...Qa7
- 2.Sd2#
- 1...Bd7
- 2.Sd2#
- 1...Bb4
- 2.Rd4#
- 1...Bc5
- 2.Sd2#
- 2.Sxc5#
- 1...Bd6
- 2.Sd2#
- 1...Se2
- 2.Sd2#
- 1...Sf3
- 2.gxf3#
- 1...Qa4!
- threat
- 1.Qxg1?
- threat
- 2.f3#
- 1...Rxd2+
- 2.Sxd2#
- 1...Bg4!
- threat
- 1.f3+?
- 1...Kxe3
- 2.Qxg1#
- 1...Sxf3!
- 1...Kxe3
- 1.Sd5?
- Keys
- 1.Rd7!
- threat
- 2.Sd2#
- 2.Bf5#
- 1...Rxd7
- 2.Bf5#
- 1...Bxd7
- 2.Sd2#
- 1...Sxh3
- 2.Sd2#
- 2.gxh3#
- 1...Qa4
- 2.Bf5#
- 1...Qa5
- 2.Bf5#
- 1...Re5
- 2.Sd2#
- 2.Rxe5#
- 1...Bb4
- 2.Bf5#
- 1...Sf3
- 2.Bf5#
- 2.gxf3#
- 1...g6
- 2.Sd2#
- threat
- 1.Rd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 13
- Sets
- R(h);CHECK,XR(C)::S(F),XR(h)
- R(h);N_GUARD::R1(C),XR(h)
- R(h);S_CUTB(j)::S(F)
- R(h);S_CUTB(g)::B(I)
- R(i);N_GUARD::R1(K),XR(i)
- R(i);S_CUTB(g)::B(I)
- R(i);S_CUTB(j)::S(F)
- B(g);N_GUARD::B(I),XB(g)
- B(g);S_CUTR(i)::R1(K)
- B(g);S_CUTR(h)::R1(C)
- B(j);N_GUARD::S(F),XB(j)
- B(j);S_CUTR(h)::R1(C)
- B(j);S_CUTR(i)::R1(K)
- S(a);OGATE::P(E),XS(a)
- S(a);OGATE,XB(I)::QAB(A)+P(E),XS(a)
- Tries
- Try
- S(L);
- Threat
- DUALS(2)
- Vars
- Q(f);P_PINS(F)::S(L)
- Q(f);::R1(C)
- Q(f);::S(L)
- B(j);::R1(C)
- S(a);N_GUARD::P(D)
- Refutation
- R(h);XS(L)
- Try
- S(L);
- Threat
- DUALS(2)
- Vars
- R(h);CHECK,XR(C)::S(F),XR(h)
- R(i);XS(L)::B(I)
- B(g);XS(L)::R1(K)
- Q(f);::B(I)
- R(h);::R1(K)
- S(k);::B(I)
- P(e);::R1(K)
- Refutation
- R(h);
- Try
- B(I);
- Threat
- DUALS(3)
- Vars
- R(h);CHECK,XR(C)::S(F),XR(h)
- R(i);XB(I)::QAR(A)
- B(g);XB(I)::R1(K)
- S(a);::R1(K)
- Refutation
- S(k);
- Try
- B(I);
- Threat
- DUALS(3)
- Vars
- R(h);XB(I)::QAR(A)
- B(g);XB(I)::R1(C)
- B(j);::R1(C)
- S(k);::R1(C)
- Refutation
- S(a);
- Try
- B(I);XB(g)
- Threat
- DUALS(3)
- Vars
- R(h);CHECK,XR(C)::S(F),XR(h)
- R(h);::QAR(A)
- R(i);::QAR(A)
- S(a);::B(I)
- S(k);::B(I)
- Refutation
- Q(f);P_PINS(L),XB(I)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(h);XR(C)::S(F)
- B(j);XR(C)::S(F)
- Q(f);::S(F)
- P(d);::S(F)
- Refutation
- Q(f);P_PINS(F)
- Try
- R(C);XR(h)
- Threat
- DUALS(2)
- Vars
- R(i);N_GUARD,XR(C)::R1(K)
- Q(f);::R1(C)
- Q(f);::S(F)
- B(g);::S(F)
- B(j);::R1(C)
- B(j);::S(F)
- S(a);::S(F)
- S(a);OGATE::P(E),XS(a)
- Refutation
- Q(f);P_PINS(F)
- Try
- Q(A);XS(a)
- Threat
- P(D)
- Vars
- R(h);CHECK,XR(C)::S(F),XR(h)
- Refutation
- B(g);
- Try
- P(D);CHECK
- Vars
- K(c);P-FLIGHT,XP(G)::QAB(A),XS(a)
- Refutation
- S(a);XP(D)
- Try
- Actual
- R(C);
- Threat
- DUALS(2)
- Vars
- R(h);XR(C)::B(I)
- B(g);XR(C)::S(F)
- Q(f);P_PINS(F)::B(I)
- Q(f);::B(I)
- B(j);::B(I)
- P(e);::S(F)
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