MESON Chess Problem Database
Problem Display
PID: 3180 (1nn1r3/2pr4/8/Q5N1/3k2p1/1K5b/3p1P2/bB1NR3 w - - 0 1)
Zagoruyko, Leonid Ivanovich
1st Prize, Latvian Sports Committee TT, 1952
#2
7 + 10
| 3105 | FIDE Album (1945-1955) | 1964 |
| 133 | The Problemist Supplement | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Qb4#
- 1...Re3+
- 2.fxe3#
- 1...Re4
- 2.Rxe4#
- 1...Re5
- 2.Qxe5#
- 1...Re6
- 2.Sxe6#
- 1...Rd8
- 2.Se6#
- 2.Re4#
- 2.Qe5#
- 1...Rf8
- 2.Se6#
- 2.Re4#
- 2.Qe5#
- 1...Rg8
- 2.Se6#
- 2.Re4#
- 2.Qe5#
- 1...Rh8
- 2.Se6#
- 2.Re4#
- 2.Qe5#
- 1...Se7
- 2.Se6#
- 2.Re4#
- 2.Qe5#
- 1...g3
- 2.Sf3#
- 1...c5
- 2.Qxd2#
- 1...Rd5
- Tries
- 1.Se4?
- threat
- 2.Qc5#
- 1...Rxe4
- 2.Rxe4#
- 1...Rd5
- 2.Qxa1#
- 1...c5
- 2.Qxc5#
- 1...Re5
- 2.Qxd2#
- 1...Sa6!
- threat
- 1.Re3?
- threat
- 2.Rd3#
- 1...Rxe3+
- 2.fxe3#
- 1...c5
- 2.Qxd2#
- 1...Rd5
- 2.Qb4#
- 1...Bf1!
- threat
- 1.Re5?
- threat
- 2.Qxa1#
- 2.Qc5#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...c5
- 2.Qxa1#
- 2.Qxc5#
- 1...Bb2
- 2.Qc5#
- 1...Bc3
- 2.Qxc3#
- 2.Qc5#
- 1...Sa6
- 2.Qxa1#
- 1...Rxe5!
- threat
- 1.Re6?
- threat
- 2.Qe5#
- 1...Rxe6
- 2.Sxe6#
- 1...c5
- 2.Qxd2#
- 1...Rd5
- 2.Qb4#
- 1...Sc6!
- threat
- 1.Rxe8?
- threat
- 2.Se6#
- 2.Re4#
- 2.Qe5#
- 1...c5
- 2.Qxd2#
- 1...Rd5
- 2.Re4#
- 2.Qb4#
- 1...Rd6
- 2.Re4#
- 2.Qe5#
- 1...Bg2
- 2.Se6#
- 2.Qe5#
- 1...Sc6
- 2.Se6#
- 2.Re4#
- 1...Sd6
- 2.Se6#
- 2.Qe5#
- 1...Se7
- 2.Se6#
- 1...g3
- 2.Sf3#
- 2.Re4#
- 2.Qe5#
- 1...Re7!
- threat
- 1.Se4?
- Keys
- 1.Se3!
- threat
- 2.Sf5#
- 1...Rxe3+
- 2.fxe3#
- 1...d1Q+
- 2.Rxd1#
- 1...d1B+
- 2.Rxd1#
- 1...Rd5
- 2.Qxd5#
- 1...c5
- 2.Qxa1#
- 1...Rf7
- 2.Qd5#
- 1...Re5
- 2.Qb4#
- 1...Rf8
- 2.Se6#
- 1...Sd6
- 2.Qd5#
- 1...Se7
- 2.Se6#
- 1...g3
- 2.Sf3#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- R(g);SBLOCK::QAR2(F)
- R(j);CHECK,OGATE::P(D),XR(j)
- R(j);N_GUARD::R1(C),XR(j)
- R(j);N_GUARD::QAB1(F),XR(j)
- R(j);N_GUARD::S(G),XR(j)
- P(e);N_GUARD::S(G)
- P(f);SBLOCK::QAR2(F),XP(b)
- Tries
- Try
- S(G);
- Threat
- QAB1(F)
- Vars
- R(j);OGATE,XS(G)::R1(C),XR(j)
- R(g);SBLOCK::QAB(F),XB(a)
- P(f);::QAB1(F),XP(f)
- R(j);SBLOCK::QAR2(F),XP(b)
- Refutation
- S(h);
- Try
- R(C);
- Threat
- R1(C)
- Vars
- R(j);CHECK,OGATE,XR(C)::P(D),XR(j)
- P(f);SBLOCK::QAR2(F),XP(b)
- R(g);SBLOCK::QAR2(F)
- Refutation
- B(c);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- B(a);::QAB1(F)
- S(h);::QAB(F),XB(a)
- Refutation
- R(j);XR(C)
- Try
- R(C);
- Threat
- QAB1(F)
- Vars
- R(j);XR(C)::S(G),XR(j)
- P(f);SBLOCK::QAR2(F),XP(b)
- R(g);SBLOCK::QAR2(F)
- Refutation
- S(h);
- Try
- R(C);XR(j)
- Threat
- DUALS(3)
- Vars
- P(f);SBLOCK::QAR2(F),XP(b)
- S(i);::S(G)
- Refutation
- R(g);
- Try
- Actual
- S(B);
- Threat
- S(B)
- Vars
- R(j);CHECK,OGATE,XS(B)::P(D),XR(j)
- P(b);CHECK,OGATEB::R(C),XQ(b)
- P(b);CHECK,OGATEB::R(C),XB(b)
- R(g);N_GUARD::QAR1(F),XR(g)
- P(f);SBLOCK::QAB(F),XB(a)
- R(g);N_GUARD::QAR1(F)
- R(j);SBLOCK::QAR2(F)
- R(j);N_GUARD::S(G)
- S(i);S_CUTR(g)::QAR1(F)
- S(i);S_CUTR(j)::S(G)
- P(e);N_GUARD::S(G)
Developed and maintained by Brian Stephenson.
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