MESON Chess Problem Database
Problem Display
PID: 162336 (1N6/2rPnB2/P4Rp1/P1k1B3/3R3r/N1P3b1/6pq/3KQ3 w - - 0 1)
Alekseev, Yuri Mikhailovich
Shakhmaty i Shashki, 1980
#2
12 + 8
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rh3
- 2.Rc4#
- 1...Rxd4+
- 2.Bxd4#
- 2.cxd4#
- 1...Rf4
- 2.Bd6#
- 1...Rh5
- 2.Rc4#
- 1...Rh6
- 2.Rc4#
- 1...Rh7
- 2.Rc4#
- 1...Rh8
- 2.Rc4#
- 1...Rxd7
- 2.Sxd7#
- 1...Bf4
- 2.Rc4#
- 1...Sd5
- 2.Rxd5#
- 1...Sf5
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Sc8
- 2.Rd5#
- 1...Sg8
- 2.Rd5#
- 1...Rh3
- Tries
- 1.Rb4?
- threat
- 2.Rb5#
- 1...Rd4+
- 2.Bxd4#
- 2.cxd4#
- 1...Rxd7+
- 2.Sxd7#
- 1...Rxb4
- 2.cxb4#
- 1...Rb7!
- threat
- 1.Rdf4?
- threat
- 2.Bd4#
- 2.Bd6#
- 2.Qe3#
- 1...Rxd7+
- 2.Sxd7#
- 1...Rxf4
- 2.Bd6#
- 1...Bxe1
- 2.Bd4#
- 2.Bd6#
- 1...Bxf4
- 2.Bd4#
- 1...g1Q
- 2.Bd6#
- 1...g1B
- 2.Bd6#
- 1...g1R
- 2.Bd4#
- 2.Bd6#
- 1...Qg1
- 2.Bd6#
- 1...Qh1
- 2.Bd4#
- 2.Bd6#
- 1...Rc6
- 2.Bd4#
- 2.Qe3#
- 1...Bf2
- 2.Bd6#
- 2.Qxf2#
- 1...Sd5
- 2.Bd4#
- 2.Bd6#
- 1...Sc6
- 2.Bd6#
- 1...Sc8
- 2.Bd4#
- 2.Qe3#
- 1...Sf5!
- threat
- 1.Rxh4?
- threat
- 2.Bd4#
- 2.Rc4#
- 2.Qe3#
- 1...Rxd7+
- 2.Sxd7#
- 1...Bxe1
- 2.Bd4#
- 2.Rc4#
- 1...Bxh4
- 2.Bd4#
- 2.Qe3#
- 1...Bxe5
- 2.Rc4#
- 1...g1Q
- 2.Rc4#
- 1...g1B
- 2.Rc4#
- 1...g1R
- 2.Bd4#
- 2.Rc4#
- 1...Qg1
- 2.Rc4#
- 1...Qh1
- 2.Bd4#
- 2.Rc4#
- 1...Bf2
- 2.Rc4#
- 2.Qxf2#
- 1...Bf4
- 2.Bd4#
- 1...Sd5
- 2.Bd4#
- 2.Rc4#
- 1...Sf5
- 2.Rc4#
- 1...Sc6
- 2.Rc4#
- 1...Qxh4!
- threat
- 1.Rff4?
- threat
- 2.Bd6#
- 2.Rc4#
- 1...Rxf4
- 2.Bd6#
- 1...Bxf4
- 2.Rc4#
- 1...Rc6
- 2.Rc4#
- 1...Sd5
- 2.Rc4#
- 2.Rxd5#
- 1...Sf5
- 2.Rc4#
- 2.Rd5#
- 1...Sc8
- 2.Rc4#
- 2.Rd5#
- 1...Rxd7!
- threat
- 1.Rb6?
- threat
- 2.Rb5#
- 1...Rxd4+
- 2.Bxd4#
- 2.cxd4#
- 1...Rb7!
- threat
- 1.Rc6+?
- 1...Sxc6
- 2.Rd5#
- 1...Rxc6!
- 1...Sxc6
- 1.d8Q?
- threat
- 2.Qd6#
- 1...Rxd4+
- 2.Bxd4#
- 2.Qxd4#
- 2.cxd4#
- 1...Rc6
- 2.Sd7#
- 1...Rd7
- 2.Sxd7#
- 2.Qb6#
- 1...Sf5
- 2.Rd5#
- 2.Qxc7#
- 2.Qd5#
- 1...Sc8
- 2.Rd5#
- 2.Qxc7#
- 2.Qd5#
- 1...Bxe5!
- threat
- 1.d8S?
- threat
- 2.Se6#
- 1...Rxd4+
- 2.Bxd4#
- 2.cxd4#
- 1...Rc6
- 2.Sd7#
- 2.Sb7#
- 1...Qh3!
- threat
- 1.Rb4?
- Keys
- 1.Bf4!
- threat
- 2.Rc4#
- 2.Qxe7#
- 1...Rxf4
- 2.Qxe7#
- 1...Rxd7
- 2.Sxd7#
- 1...Bxe1
- 2.Rc4#
- 1...Bxf4
- 2.Rc4#
- 1...g1Q
- 2.Rc4#
- 1...g1R
- 2.Rc4#
- 1...Qg1
- 2.Rc4#
- 1...Qh1
- 2.Rc4#
- 1...Rc6
- 2.Rc4#
- 1...Sd5
- 2.Rc4#
- 2.Rxd5#
- 1...Sf5
- 2.Rc4#
- 2.Rd5#
- 2.Qe5#
- 1...Sc6
- 2.Rc4#
- 2.Rd5#
- 1...Sc8
- 2.Rc4#
- 2.Rd5#
- 2.Qe5#
- 1...Sg8
- 2.Rc4#
- 2.Rd5#
- 2.Qe5#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 10
- Sets
- R(d);N_GUARD::R1(E)
- R(d);S_CUTB(c)::B(G)
- R(g);P_PINR(E),XP(J)::S(L),XR(g)
- B(c);S_CUTR(d)::R1(E)
- S(h);N_GUARD::R1(E),XS(h)
- S(h);N_GUARD::R1(E)
- Tries
- Try
- R(E);
- Threat
- R1(E)
- Vars
- R(g);CHECK,XP(J)::S(L),XR(g)
- R(d);OGATE,XR(E)::P(D),XR(d)
- Refutation
- R(g);
- Try
- R(E);
- Threat
- DUALS(3)
- Vars
- R(g);CHECK,XP(J)::S(L),XR(g)
- R(d);XR(E)::B(G)
- B(c);XR(E)::B(G)
- P(a);P_PINQ(B)::B(G)
- P(a);::B(G)
- Q(b);P_PINQ(B)::B(G)
- S(h);::B(G)
- Refutation
- S(h);
- Try
- R(E);XR(d)
- Threat
- DUALS(3)
- Vars
- R(g);CHECK,XP(J)::S(L),XR(g)
- B(c);XB(G)::R1(E)
- P(a);P_PINQ(B)::R1(E)
- P(a);::R1(E)
- Q(b);P_PINQ(B)::R1(E)
- B(c);::B(G)
- S(h);::R1(E)
- Refutation
- Q(b);XR(E)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- R(d);XR(I)::B(G)
- B(c);XR(I)::R1(E)
- R(g);::R1(E)
- Refutation
- R(g);P_PINR(E),XP(J)
- Try
- R(I);
- Threat
- R1(I)
- Refutation
- R(g);
- Try
- R(I);CHECK
- Vars
- S(h);XR(I)::R1(E)
- Refutation
- R(g);XR(I)
- Try
- P(J);
- Threat
- QAB1(J)
- Vars
- R(g);N_GUARD::S(L)
- Refutation
- B(c);XB(G)
- Try
- P(J);
- Threat
- S(J)
- Refutation
- Q(b);
- Try
- Actual
- B(G);
- Threat
- DUALS(2)
- Vars
- R(d);XB(G)::QAB(B),XS(h)
- R(g);P_PINR(E),XP(J)::S(L),XR(g)
- B(c);XQ(B)::R1(E)
- B(c);XB(G)::R1(E)
- P(a);P_PINQ(B)::R1(E)
- Q(b);P_PINQ(B)::R1(E)
- R(g);::R1(E)
Developed and maintained by Brian Stephenson.
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