MESON Chess Problem Database
Problem Display
PID: 6500 (8/7r/6p1/8/6Q1/6K1/4N1P1/7k w - - 0 1)
Lebedev, Aleksandr N
Zadachi i Etyudi, 1929
#2
4 + 3
| 3296 | Shakhmatny zadachi miniaturi | 1987 |
| 3813 | 300 Sachmatu Uzdaviniu | 1991 |
SOLUTION
- SOUND
- Sets
- 1...Rh3+
- 2.Qxh3#
- 1...Rh4
- 2.Qxh4#
- 1...Ra7
- 2.Qh3#
- 2.Qh4#
- 1...Rb7
- 2.Qh3#
- 2.Qh4#
- 1...Rc7
- 2.Qh3#
- 2.Qh4#
- 1...Rd7
- 2.Qh3#
- 2.Qh4#
- 1...Re7
- 2.Qh3#
- 2.Qh4#
- 1...Rf7
- 2.Qh3#
- 2.Qh4#
- 1...Rg7
- 2.Qh3#
- 2.Qh4#
- 1...Rh3+
- Tries
- 1.Qf3?
- threat
- 2.Qf1#
- 1...Rh3+
- 2.gxh3#
- 1...Rf7!
- threat
- 1.Qf5?
- threat
- 2.Qb1#
- 2.Qf1#
- 1...Rh3+
- 2.Qxh3#
- 1...Rd7
- 2.Qh3#
- 2.Qf1#
- 1...Rb7
- 2.Qh3#
- 2.Qf1#
- 1...Rc7
- 2.Qh3#
- 2.Qf1#
- 1...Rf7
- 2.Qh3#
- 1...gxf5!
- threat
- 1.Qd7?
- threat
- 2.Qd1#
- 2.Qxh7#
- 1...Rh3+
- 2.Qxh3#
- 1...Rh2
- 2.Qd1#
- 1...Rh4
- 2.Qd1#
- 1...Rh5
- 2.Qd1#
- 1...Rh6
- 2.Qd1#
- 1...Re7
- 2.Qh3#
- 2.Qd1#
- 1...Rf7
- 2.Qh3#
- 1...Rg7
- 2.Qh3#
- 2.Qd1#
- 1...Rh8
- 2.Qd1#
- 1...Rxd7!
- threat
- 1.Qc8?
- threat
- 2.Qc1#
- 1...Rh3+
- 2.Qxh3#
- 1...Rc7
- 2.Qh3#
- 1...Rf7
- 2.Qh3#
- 1...Rd7!
- threat
- 1.Qa4?
- threat
- 2.Qd1#
- 2.Qa1#
- 1...Rd7
- 2.Qh4#
- 1...Ra7
- 2.Qd1#
- 2.Qh4#
- 1...Rb7
- 2.Qd1#
- 2.Qh4#
- 1...Rc7
- 2.Qd1#
- 2.Qh4#
- 1...Rf7
- 2.Qh4#
- 1...Rh3+!
- threat
- 1.Qb4?
- threat
- 2.Qe1#
- 2.Qb1#
- 1...Rd7
- 2.Qe1#
- 2.Qh4#
- 1...Rb7
- 2.Qe1#
- 2.Qh4#
- 1...Rc7
- 2.Qe1#
- 2.Qh4#
- 1...Rf7
- 2.Qh4#
- 1...Rh3+!
- threat
- 1.Qc4?
- threat
- 2.Qc1#
- 1...Rd7
- 2.Qh4#
- 1...Rc7
- 2.Qh4#
- 1...Rf7
- 2.Qh4#
- 1...Rh3+!
- threat
- 1.Qd4?
- threat
- 2.Qa1#
- 2.Qg1#
- 2.Qd1#
- 1...Rd7
- 2.Qg1#
- 2.Qh4#
- 1...Ra7
- 2.Qg1#
- 2.Qd1#
- 2.Qh4#
- 1...Rb7
- 2.Qg1#
- 2.Qd1#
- 2.Qh4#
- 1...Rc7
- 2.Qg1#
- 2.Qd1#
- 2.Qh4#
- 1...Rf7
- 2.Qg1#
- 2.Qh4#
- 1...Rh3+!
- threat
- 1.Qf4?
- threat
- 2.Qc1#
- 2.Qf1#
- 1...Rd7
- 2.Qh6#
- 2.Qf1#
- 2.Qh4#
- 1...Rc7
- 2.Qh6#
- 2.Qf1#
- 2.Qh4#
- 1...Rf7
- 2.Qh6#
- 2.Qh4#
- 1...Rh3+!
- threat
- 1.Qg5?
- threat
- 2.Qc1#
- 1...Rd7
- 2.Qh4#
- 2.Qh6#
- 1...Rc7
- 2.Qh4#
- 2.Qh6#
- 1...Rf7
- 2.Qh4#
- 2.Qh6#
- 1...Rh3+!
- threat
- 1.Qf3?
- Keys
- 1.Qe4!
- threat
- 2.Qb1#
- 1...Rh3+
- 2.gxh3#
- 1...Rd7
- 2.Qh4#
- 1...Rb7
- 2.Qh4#
- 1...Rc7
- 2.Qh4#
- 1...Rf7
- 2.Qh4#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(c);CHECK,N_GUARD::QAR2(D),XR(c)
- R(c);N_GUARD::QAR(D),XR(c)
- Tries
- Try
- Q(D);
- Threat
- QAR2(D)
- Vars
- R(c);CHECK,OGATE::QAB(D)+P(B),XR(c)
- Refutation
- R(c);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,N_GUARD::QAR2(D),XR(c)
- R(c);N_GUARD::QAR2(D)
- Refutation
- P(b);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,N_GUARD::QAR2(D),XR(c)
- R(c);::QAR(D)
- R(c);N_GUARD::QAR2(D)
- Refutation
- R(c);XQ(D)
- Try
- Q(D);
- Threat
- QAR(D)
- Vars
- R(c);CHECK,N_GUARD::QAR2(D),XR(c)
- R(c);N_GUARD::QAR2(D)
- Refutation
- R(c);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD::QAR(D)
- Refutation
- R(c);CHECK
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD::QAR(D)
- Refutation
- R(c);CHECK
- Try
- Q(D);
- Threat
- QAR(D)
- Vars
- R(c);N_GUARD::QAR(D)
- Refutation
- R(c);CHECK
- Try
- Q(D);
- Threat
- DUALS(3)
- Refutation
- R(c);CHECK
- Try
- Q(D);
- Threat
- DUALS(2)
- Refutation
- R(c);CHECK
- Try
- Q(D);
- Threat
- QAR(D)
- Refutation
- R(c);CHECK
- Try
- Actual
- Q(D);
- Threat
- QAR(D)
- Vars
- R(c);CHECK,OGATE::QAB(D)+P(B),XR(c)
- R(c);N_GUARD::QAR(D)
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