MESON Chess Problem Database
Problem Display
PID: 238026 (n7/3p4/8/1R1B1R2/3k4/K2b2P1/3Q4/3n4 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Mat, 1978
#2
6 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sc3
- 2.Qf2#
- 1...Se3
- 2.Qb2#
- 1...Sc3
- Tries
- 1.Bh1?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Kc4
- 2.Rb4#
- 2.Qb4#
- 1...Sb6
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...d5!
- threat
- 1.Ba2?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Ke4
- 2.Rf4#
- 2.Qf4#
- 1...Sb6
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...d5!
- threat
- 1.Bg2?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Kc4
- 2.Rb4#
- 2.Qb4#
- 1...Sb6
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...d5!
- threat
- 1.Bb3?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Ke4
- 2.Rf4#
- 2.Qf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...d5!
- threat
- 1.Bf3?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Kc4
- 2.Rb4#
- 2.Qb4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...d5!
- threat
- 1.Bc4?
- threat
- 2.Rf4#
- 2.Qxd3#
- 1...Kxc4
- 2.Rb4#
- 2.Qb4#
- 1...Ke4
- 2.Rf4#
- 2.Qf4#
- 2.Qxd3#
- 1...d5
- 2.Qxd3#
- 1...Sb2
- 2.Rf4#
- 1...Sc3
- 2.Qxd3#
- 1...Sf2!
- threat
- 1.Be4?
- threat
- 2.Rb4#
- 2.Qxd3#
- 1...Kc4
- 2.Rb4#
- 2.Qb4#
- 2.Qxd3#
- 1...Kxe4
- 2.Rf4#
- 2.Qf4#
- 1...d5
- 2.Qxd3#
- 1...Sf2
- 2.Rb4#
- 1...Se3
- 2.Qxd3#
- 1...Sb6
- 2.Qxd3#
- 1...Sb2!
- threat
- 1.Bc6?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Kc4
- 2.Rb4#
- 2.Qb4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...d5!
- threat
- 1.Be6?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Ke4
- 2.Rf4#
- 2.Qf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...d5!
- threat
- 1.Bb7?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Kc4
- 2.Rb4#
- 2.Qb4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...d5!
- threat
- 1.Bf7?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Ke4
- 2.Rf4#
- 2.Qf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...d5!
- threat
- 1.Bxa8?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Kc4
- 2.Rb4#
- 2.Qb4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...d5!
- threat
- 1.Bg8?
- threat
- 2.Rb4#
- 2.Rf4#
- 1...Ke4
- 2.Rf4#
- 2.Qf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Se3
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...d5!
- threat
- 1.Rc5?
- threat
- 2.Rc4#
- 1...Kxc5
- 2.Qb4#
- 1...Sb2
- 2.Qf2#
- 1...Se3
- 2.Qc3#
- 1...Sb6!
- threat
- 1.Qb2+?
- 1...Ke3
- 2.Rf3#
- 1...Sc3
- 2.Qf2#
- 1...Sxb2!
- 1...Ke3
- 1.Qf2+?
- 1...Kc3
- 2.Rb3#
- 1...Se3
- 2.Qb2#
- 1...Sxf2!
- 1...Kc3
- 1.Bh1?
- Keys
- 1.Re5!
- threat
- 2.Re4#
- 1...Kxe5
- 2.Qf4#
- 1...Sf2
- 2.Qb2#
- 1...Sc3
- 2.Qe3#
- threat
- 1.Re5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD,SBLOCK::QAB(A)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(e);::R(F)
- S(a);::R(F)
- S(a);::R(D)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(e);::R(F)
- S(a);::R(F)
- S(a);::R(D)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(e);::R(F)
- S(a);::R(F)
- S(a);::R(D)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(a);::R(F)
- S(a);::R(D)
- S(e);::R(F)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(a);::R(F)
- S(a);::R(D)
- S(e);::R(F)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- P(d);::QAR1(A),XB(b)
- S(a);::R(F)
- S(a);::QAR1(A),XB(b)
- Refutation
- S(a);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- P(d);::QAR1(A),XB(b)
- S(a);::R(D)
- S(a);::QAR1(A),XB(b)
- S(e);::QAR1(A),XB(b)
- Refutation
- S(a);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(a);::R(F)
- S(a);::R(D)
- S(e);::R(F)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(a);::R(F)
- S(a);::R(D)
- S(e);::R(F)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(a);::R(F)
- S(a);::R(D)
- S(e);::R(F)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(a);::R(F)
- S(a);::R(D)
- S(e);::R(F)
- Refutation
- P(d);
- Try
- B(E);XS(e)
- Threat
- DUALS(2)
- Vars
- S(a);::R(F)
- S(a);::R(D)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(a);::R(F)
- S(a);::R(D)
- S(e);::R(F)
- Refutation
- P(d);
- Try
- R(D);
- Threat
- R1(D)
- Vars
- K(c);N_SPINB(b),S_FLIGHT,XR(D)::QAB1(A)
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD,SBLOCK::QAB1(A)
- Refutation
- S(e);
- Try
- Q(A);CHECK,N_PINB(b)
- Vars
- K(c);S_FLIGHT::R1(F)
- S(a);N_GUARD,P_SPINS(a),SBLOCK::QAB(A)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);CHECK,N_PINB(b)
- Vars
- K(c);S_FLIGHT::R1(D)
- S(a);N_GUARD,P_SPINS(a),SBLOCK::QAB(A)
- Refutation
- S(a);XQ(A)
- Try
- Actual
- R(F);
- Threat
- R1(F)
- Vars
- K(c);N_SPINB(b),S_FLIGHT,XR(F)::QAB1(A)
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD,SBLOCK::QAB1(A)
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