MESON Chess Problem Database
Problem Display
PID: 157721 (5B2/K3p1P1/3p1k2/1Rp1N1p1/b2N4/1qRB4/7Q/8 w - - 0 1)
Erokhin, Vladimir Alekseevich
Revista Romana de Sah, 1973
#2
9 + 7
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.g8S#
- 1...Qc2
- 2.g8S#
- 1...Qf7
- 2.Sg4#
- 2.Sd7#
- 1...Qb1
- 2.g8S#
- 1...Qb2
- 2.g8S#
- 1...Qa3
- 2.g8S#
- 1...Qxc3
- 2.g8S#
- 1...Qb4
- 2.g8S#
- 1...Qxb5
- 2.g8S#
- 1...cxd4
- 2.Qh6#
- 1...c4
- 2.Qf2#
- 2.Qh6#
- 2.g8S#
- 1...g4
- 2.Qf4#
- 1...dxe5
- 2.Qf2#
- 1...d5
- 2.g8S#
- 1...e6
- 2.g8S#
- 1...Qd1
- Tries
- 1.Bxe7+?
- 1...Kxg7
- 2.Qh7#
- 1...Kxe7!
- 1...Kxg7
- 1.Rcxb3?
- threat
- 2.g8S#
- 1...cxd4
- 2.Qh6#
- 1...dxe5
- 2.Qf2#
- 1...g4
- 2.Qf4#
- 1...Bxb3!
- threat
- 1.Rc4?
- threat
- 2.g8S#
- 1...cxd4
- 2.Qh6#
- 1...dxe5
- 2.Qf2#
- 1...g4
- 2.Qf4#
- 1...Qxc4!
- threat
- 1.g8Q?
- threat
- 2.Sg4#
- 2.Sd7#
- 2.Bg7#
- 2.Qhh8#
- 2.Qg6#
- 2.Qg7#
- 2.Qgh8#
- 1...Qxb5
- 2.Sg4#
- 2.Bg7#
- 2.Qe6#
- 2.Qf7#
- 2.Qhh8#
- 2.Qg6#
- 2.Qg7#
- 2.Qgh8#
- 1...Bxb5
- 2.Sg4#
- 2.Bg7#
- 2.Qhh8#
- 2.Qg6#
- 2.Qg7#
- 2.Qgh8#
- 1...cxd4
- 2.Sg4#
- 2.Sd7#
- 2.Bg7#
- 2.Qf2#
- 2.Qh6#
- 2.Qhh8#
- 2.Qg6#
- 1...dxe5
- 2.Bg7#
- 2.Qf2#
- 2.Qh6#
- 2.Qhh8#
- 2.Qg6#
- 2.Qg7#
- 1...Qd1
- 2.Sd7#
- 2.Bg7#
- 2.Qe6#
- 2.Qf7#
- 2.Qhh8#
- 2.Qg6#
- 2.Qg7#
- 2.Qgh8#
- 1...Qe6
- 2.Bg7#
- 2.Qxe6#
- 2.Qhh8#
- 2.Qg6#
- 2.Qg7#
- 2.Qgh8#
- 1...Qf7
- 2.Sg4#
- 2.Sd7#
- 2.Qxf7#
- 1...g4
- 2.Sxg4#
- 2.Sd7#
- 2.Qf4#
- 2.Qhh8#
- 2.Qg6#
- 2.Qg7#
- 1...e6
- 2.Sg4#
- 2.Sd7#
- 2.Qf7#
- 2.Qhh8#
- 2.Qg6#
- 2.Qg7#
- 2.Qgh8#
- 1...Qxg8!
- threat
- 1.g8B?
- threat
- 2.Sg4#
- 2.Sd7#
- 2.Qh8#
- 1...Qxb5
- 2.Sg4#
- 2.Qh8#
- 1...Bxb5
- 2.Sg4#
- 2.Qh8#
- 1...dxe5
- 2.Qf2#
- 2.Qh6#
- 2.Qh8#
- 1...g4
- 2.Qf4#
- 1...Qd1
- 2.Sd7#
- 2.Qh8#
- 1...Qe6
- 2.Qh8#
- 1...Qf7
- 2.Sg4#
- 2.Sd7#
- 1...Qxg8!
- threat
- 1.g8R?
- threat
- 2.Bg7#
- 2.Rg6#
- 2.Qh8#
- 1...cxd4
- 2.Rg6#
- 2.Qh6#
- 1...dxe5
- 2.Qf2#
- 1...Qf7
- 2.Sg4#
- 2.Sd7#
- 1...g4
- 2.Rg6#
- 2.Qf4#
- 2.Qh8#
- 1...e6
- 2.Rg6#
- 2.Qh8#
- 1...Qxg8!
- threat
- 1.Bxe7+?
- Keys
- 1.Bc4!
- threat
- 2.g8S#
- 1...Qxc4
- 2.Rf3#
- 1...cxd4
- 2.Qf2#
- 1...dxe5
- 2.Qh6#
- 1...g4
- 2.Qf4#
- threat
- 1.Bc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(a);N_GUARD::P=S
- Q(a);N_GUARD,XR(B)::P=S
- Q(a);N_GUARD,XR(E)::P=S
- P(c);XS(D)::QAR2(A)
- P(d);N_GUARD::QAR2(A)
- P(e);SBLOCK,XS(F)::QAR(A)
- P(e);S_CUTQ(a)::P=S
- P(g);S_CUTQ(a)::P=S
- Tries
- Try
- B(I);CHECK,XP(g)
- Vars
- K(f);S_FLIGHT,XP(H)::QAR1(A)
- Refutation
- K(f);S_FLIGHT,XB(I)
- Try
- R(B);XQ(a)
- Threat
- P=S
- Vars
- P(c);XS(D)::QAR2(A)
- P(e);SBLOCK,XS(F)::QAR(A)
- P(d);N_GUARD::QAR2(A)
- Refutation
- B(b);XR(B)
- Try
- R(B);
- Threat
- P=S
- Vars
- P(c);XS(D)::QAR2(A)
- P(e);SBLOCK,XS(F)::QAR(A)
- P(d);N_GUARD::QAR2(A)
- Refutation
- Q(a);XR(B)
- Try
- P(H);
- Threat
- DUALS(7)
- Refutation
- Q(a);XQ(H)
- Try
- P(H);
- Threat
- DUALS(3)
- Vars
- P(d);N_GUARD::QAR2(A)
- Q(a);::QAB(A)
- Refutation
- Q(a);XB(H)
- Try
- P(H);
- Threat
- DUALS(3)
- Vars
- P(e);SBLOCK,XS(F)::QAR(A)
- Refutation
- Q(a);XR(H)
- Try
- Actual
- B(C);
- Threat
- P=S
- Vars
- Q(a);N_GUARD,XB(C)::R(B)
- P(c);XS(D)::QAR(A)
- P(e);SBLOCK,XS(F)::QAR2(A)
- P(d);N_GUARD::QAR2(A)
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