MESON Chess Problem Database
Problem Display
PID: 238002 (n4K2/n2k1N2/8/B7/8/2R5/B2p1p1p/Q7 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Revista Romana de Sah, 1971
#2
6 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sc7
- 2.Rxc7#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sc7
- Tries
- 1.Qb1?
- threat
- 2.Qd3#
- 2.Qf5#
- 1...Sc6
- 2.Qf5#
- 1...Sc7
- 2.Rxc7#
- 1...d1Q
- 2.Qf5#
- 2.Qxd1#
- 1...d1R
- 2.Qf5#
- 2.Qxd1#
- 1...f1B
- 2.Qf5#
- 1...f1R
- 2.Qd3#
- 1...h1Q
- 2.Qf5#
- 1...h1B
- 2.Qf5#
- 1...Sb5
- 2.Qf5#
- 2.Qxb5#
- 1...Sc8
- 2.Qf5#
- 2.Qb5#
- 1...Sb6
- 2.Qf5#
- 1...f1Q!
- threat
- 1.Qd1?
- threat
- 2.Qg4#
- 2.Qxd2#
- 1...Sc6
- 2.Qg4#
- 1...Sc7
- 2.Rxc7#
- 1...f1S
- 2.Qg4#
- 1...f1B
- 2.Qg4#
- 1...f1R
- 2.Qxd2#
- 1...h1Q
- 2.Qg4#
- 1...h1B
- 2.Qg4#
- 1...Sb5
- 2.Qg4#
- 1...Sc8
- 2.Qa4#
- 2.Qg4#
- 1...Sb6
- 2.Qg4#
- 1...f1Q!
- threat
- 1.Qf1?
- threat
- 2.Qd3#
- 2.Qh3#
- 1...Sc6
- 2.Qh3#
- 1...Sc7
- 2.Rxc7#
- 1...d1Q
- 2.Qxd1#
- 1...d1B
- 2.Qd3#
- 2.Qxd1#
- 1...d1R
- 2.Qh3#
- 2.Qxd1#
- 1...h1B
- 2.Qh3#
- 1...h1R
- 2.Qd3#
- 1...Sb5
- 2.Qh3#
- 2.Qxb5#
- 1...Sc8
- 2.Qh3#
- 2.Qb5#
- 1...Sb6
- 2.Qh3#
- 1...h1Q!
- threat
- 1.Qb1?
- Keys
- 1.Qh1!
- threat
- 2.Qd5#
- 1...Sc6
- 2.Qxc6#
- 1...Sc7
- 2.Rxc7#
- 1...d1Q
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sb5
- 2.Qc6#
- 1...Sc8
- 2.Qc6#
- 1...Sb6
- 2.Qb7#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- S(f);N_GUARD::R1(C),XS(f)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(d);::QAB(A)
- S(f);N_GUARD::R1(C),XS(f)
- P(b);::QAB(A)
- P(b);P_PINS(E)::QAR(A)
- P(c);::QAB(A)
- S(f);::QAB(A)
- Refutation
- P(b);P_PINS(E)
- Try
- Q(A);P_PINP(a)
- Threat
- DUALS(2)
- Vars
- S(d);::QAB(A)
- S(f);N_GUARD::R1(C),XS(f)
- P(b);::QAB(A)
- P(b);P_PINS(E)::QAR(A),XP(a)
- P(c);::QAB(A)
- S(f);::QAB(A)
- Refutation
- P(b);P_PINS(E)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(d);::QAB(A)
- S(f);N_GUARD::R1(C),XS(f)
- P(a);OGATEB::QAR(A),XQ(a)
- P(c);::QAB(A)
- P(c);::QAR(A)
- S(f);::QAB(A)
- Refutation
- P(c);
- Try
- Actual
- Q(A);
- Threat
- QAR2(A)
- Vars
- S(d);N_GUARD::QAB1(A),XS(d)
- S(f);N_GUARD::R1(C),XS(f)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(d);N_GUARD::QAB1(A)
- S(f);N_GUARD::QAR2(A)
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