MESON Chess Problem Database
Problem Display
PID: 103906 (B5R1/B2b4/2n1pKnp/4RP1Q/1r3k1p/2pP3p/2Nb3P/8 w - - 0 1)
Lukyanov, Valentin Volodimirovich
Krasnoe Znamya, 1977
#2
10 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Re4#
- 1...Rb2
- 2.Re4#
- 1...Rb3
- 2.Re4#
- 1...Re4
- 2.Rxe4#
- 1...Rb5
- 2.Re4#
- 1...Rb6
- 2.Re4#
- 1...Rb7
- 2.Re4#
- 1...Rb8
- 2.Re4#
- 1...Be1
- 2.Be3#
- 1...Be3
- 2.Bxe3#
- 1...Sd4
- 2.Re4#
- 1...Sa5
- 2.Qf3#
- 1...Sxa7
- 2.Qf3#
- 1...Sce7
- 2.Qf3#
- 1...Sb8
- 2.Qf3#
- 1...Sd8
- 2.Qf3#
- 1...Sge7
- 2.Qg4#
- 1...Sf8
- 2.Qg4#
- 1...Sh8
- 2.Qg4#
- 1...Rb1
- Tries
- 1.Se1?
- threat
- 2.Qf3#
- 1...Bxe1
- 2.Be3#
- 1...Sgxe5
- 2.Qxh6#
- 1...Sd4
- 2.Re4#
- 1...Scxe5!
- threat
- 1.Se3?
- threat
- 2.Qg4#
- 1...Bxe3
- 2.Bxe3#
- 1...Scxe5
- 2.Qxh6#
- 1...exf5
- 2.Sd5#
- 1...Sgxe5!
- threat
- 1.Sd4?
- threat
- 2.Se2#
- 2.Re4#
- 2.Qf3#
- 1...Sxd4
- 2.Re4#
- 1...Scxe5
- 2.Se2#
- 1...Sgxe5
- 2.Se2#
- 2.Qxh6#
- 1...exf5
- 2.Se2#
- 2.Qf3#
- 1...Rxd4!
- threat
- 1.Bxc6?
- threat
- 2.Qf3#
- 1...Sxe5
- 2.Qxh6#
- 1...Re4
- 2.Rxe4#
- 1...Bxc6!
- threat
- 1.Re3?
- threat
- 2.Rf3#
- 2.Qf3#
- 1...Bxe3
- 2.Bxe3#
- 1...Sd4
- 2.Re4#
- 1...Sge5
- 2.Qxh6#
- 1...Sce5!
- threat
- 1.Rxg6?
- threat
- 2.Qg4#
- 1...Sxe5
- 2.Qxh6#
- 1...exf5!
- threat
- 1.Qxh4+?
- 1...Kf3
- 2.Qg3#
- 1...Sxh4!
- 1...Kf3
- 1.fxe6?
- threat
- 2.Rf5#
- 2.Qf5#
- 1...Scxe5
- 2.Qf5#
- 1...Sgxe5
- 2.Qf5#
- 1...Rb5
- 2.Re4#
- 2.Qf5#
- 1...Sd4
- 2.Re4#
- 1...Sce7
- 2.Qf3#
- 1...Sge7
- 2.Qg4#
- 1...Bxe6!
- threat
- 1.Se1?
- Keys
- 1.Bb8!
- threat
- 2.Re4#
- 1...Scxe5
- 2.Qf3#
- 1...Sxb8
- 2.Qf3#
- 1...Sgxe5
- 2.Qg4#
- 1...Re4
- 2.Rxe4#
- threat
- 1.Bb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 17
- Sets
- R(d);N_GUARD::R1(D)
- R(d);N_GUARD::R1(D),XR(d)
- B(a);N_GUARD::B(H)
- B(a);N_GUARD::B(H),XB(a)
- S(g);S_CUTR(d)::R1(D)
- S(g);::QAR1(F)
- S(g);XB(H)::QAR1(F)
- S(i);::QAR1(F)
- Tries
- Try
- S(A);
- Threat
- QAR1(F)
- Vars
- B(a);N_GUARD,XS(A)::B(H)
- S(i);XR(D)::QAB(F),XP(j)
- S(g);S_CUTR(d)::R1(D)
- Refutation
- S(g);XR(D)
- Try
- S(A);
- Threat
- QAR1(F)
- Vars
- B(a);OGATE,XS(A)::B(H),XB(a)
- S(g);XR(D)::QAB(F),XP(j)
- P(h);N_GUARD,XP(E)::S(A)
- Refutation
- S(i);XR(D)
- Try
- S(A);
- Threat
- DUALS(3)
- Vars
- S(g);XS(A)::R1(D)
- S(g);XR(D)::S(A)
- Refutation
- R(d);XS(A)
- Try
- B(I);XS(g)
- Threat
- QAR1(F)
- Vars
- S(i);XR(D)::QAB(F),XP(j)
- R(d);N_GUARD::R1(D),XR(d)
- Refutation
- B(k);XB(I)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- B(a);OGATE,XR(D)::B(H),XB(a)
- S(g);S_CUTR(d)::R1(D)
- S(i);::QAB(F),XP(j)
- Refutation
- S(g);
- Try
- R(J);XS(i)
- Threat
- QAR1(F)
- Vars
- S(g);XR(D)::QAB(F),XP(j)
- Refutation
- P(h);XP(E)
- Try
- Q(F);CHECK,XP(f)
- Vars
- K(e);P-FLIGHT,P_SPINS(g)::QAR1(F)
- Refutation
- S(i);XQ(F)
- Try
- P(E);XP(h)
- Threat
- DUALS(2)
- Vars
- S(g);XR(D)::QAR1(F)
- S(i);XR(D)::QAR1(F)
- S(g);S_CUTR(d)::R1(D)
- S(g);::QAR1(F)
- S(i);::QAR1(F)
- Refutation
- B(k);XP(E)
- Try
- Actual
- B(H);
- Threat
- B(H)+R(D),DCHECK
- Vars
- S(g);P_SPINS(g),XR(D)::QAR1(F)
- S(g);XB(H)::QAR1(F)
- S(i);P_SPINS(i),XR(D)::QAR1(F)
- R(d);::B(H)+R(D),DCHECK,XR(d)
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