MESON Chess Problem Database
Problem Display
PID: 828 (4RBb1/1KpB4/2P4n/Np1k1PQ1/rR3p1r/7N/1nqpP3/8 w - - 0 1)
Parthasarathy, Dr Mukkur
1st Prize, British Chess Magazine, 1968
#2
11 + 11
| 5862 | An ABC of Chess Problems | 1970 |
| 273 | Mat Plus | 1994 |
| 133 | The Problemist Supplement | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxc6+
- 2.Bxc6#
- 1...Rh5
- 2.Sxf4#
- 1...Sg4
- 2.Sxf4#
- 2.Qxg8#
- 1...Sxf5
- 2.Qxg8#
- 1...Qxc6+
- Tries
- 1.Be6+?
- 1...Ke5
- 2.Bf7#
- 2.Bxg8#
- 2.Qg7#
- 1...Bxe6!
- 1...Ke5
- 1.Rxb5+?
- 1...Kd4
- 2.Bg7#
- 2.Qf6#
- 2.Qg7#
- 1...Qc5!
- 1...Kd4
- 1.Qxf4?
- threat
- 2.Re5#
- 2.Qe5#
- 1...Qxc6+
- 2.Bxc6#
- 1...Qxf5
- 2.Rxb5#
- 1...Rxf4
- 2.Sxf4#
- 1...Qc3
- 2.e4#
- 1...Be6
- 2.Bxe6#
- 1...Sd3
- 2.e4#
- 1...Sc4
- 2.Rxb5#
- 1...Sg4
- 2.Qd4#
- 1...Sf7
- 2.Be6#
- 1...Qe4!
- threat
- 1.Qf6?
- threat
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 1...Qxc6+
- 2.Bxc6#
- 2.Qxc6#
- 1...Qxf5
- 2.Rxb5#
- 2.Qd4#
- 1...Rxb4
- 2.Qe5#
- 1...Sxf5
- 2.Re5#
- 2.Qe5#
- 1...d1Q
- 2.Re5#
- 2.Qe5#
- 1...d1R
- 2.Re5#
- 2.Qe5#
- 1...Qd3
- 2.Re5#
- 2.Qe5#
- 1...Qe4
- 2.Rxb5#
- 1...Qc4
- 2.Qe5#
- 1...Qc5
- 2.Re5#
- 2.Qe5#
- 1...Be6
- 2.Bxe6#
- 2.Qd4#
- 2.Qxe6#
- 1...Sd3
- 2.Qd4#
- 1...Sc4
- 2.Rxb5#
- 1...Sg4
- 2.Sxf4#
- 2.Qd4#
- 1...Sf7
- 2.Be6#
- 2.Qd4#
- 2.Qe6#
- 1...f3
- 2.Re5#
- 2.Qe5#
- 1...Qc3!
- threat
- 1.Qg2+?
- 1...Qe4
- 2.Qxe4#
- 1...f3!
- 1...Qe4
- 1.Qg7?
- threat
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 1...Qxc6+
- 2.Bxc6#
- 1...Qxf5
- 2.Rxb5#
- 2.Qd4#
- 1...Rxb4
- 2.Qe5#
- 1...Sxf5
- 2.Re5#
- 2.Qe5#
- 2.Qxg8#
- 1...d1Q
- 2.Re5#
- 2.Qe5#
- 1...d1R
- 2.Re5#
- 2.Qe5#
- 1...Qd3
- 2.Re5#
- 2.Qe5#
- 1...Qe4
- 2.Rxb5#
- 1...Qc4
- 2.Qe5#
- 1...Qc5
- 2.Re5#
- 2.Qe5#
- 1...Be6
- 2.Bxe6#
- 2.Qd4#
- 1...Sd3
- 2.Qd4#
- 1...Sc4
- 2.Rxb5#
- 1...Sg4
- 2.Sxf4#
- 2.Qd4#
- 2.Qxg8#
- 1...Sf7
- 2.Be6#
- 2.Qd4#
- 1...f3
- 2.Re5#
- 2.Qe5#
- 1...Qc3!
- threat
- 1.Qxg8+?
- 1...Sf7
- 2.Qxf7#
- 1...Sxg8!
- 1...Sf7
- 1.f6+?
- 1...Sf5
- 2.Qxg8#
- 1...Qf5!
- 1...Sf5
- 1.Be6+?
- Keys
- 1.Qe7!
- threat
- 2.Qe5#
- 1...Qxc6+
- 2.Bxc6#
- 1...Qxf5
- 2.Qc5#
- 1...Be6
- 2.Qxe6#
- 1...Sc4
- 2.Qc5#
- 1...Qe4
- 2.Qc5#
- 2.Qxe4#
- 1...Qc3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sg4
- 2.Sxf4#
- 1...Sf7
- 2.Qe6#
- threat
- 1.Qe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 2
- Sets
- Q(b);CHECK,OGATE,XP(G)::B(I),XQ(b)
- R(f);N_GUARD::S(B),XP(e)
- S(i);N_GUARD,P_SPINS(i),XP(E)::QAB(F),XB(k)
- Tries
- Try
- B(I);CHECK
- Refutation
- B(k);XB(I)
- Try
- R(C);CHECK,XP(g)
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Q(F);XP(e)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,OGATE,XP(G)::B(I),XQ(b)
- Q(b);N_GUARD,XP(E)::R(C),XP(g)
- R(f);XQ(F)::S(B),XR(f)
- Q(b);N_GUARD::P(A)
- B(k);N_GUARD::B(I),XB(k)
- S(a);S_CUTQ(b)::P(A)
- S(a);S_CUTQ(b)::R(C),XP(g)
- S(i);S_CUTR(f)::QAR1(F)
- S(i);S_CUTB(k)::B(I)
- Refutation
- Q(b);
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- R(d);XR(C)::QAR1(F)
- Q(b);N_GUARD::R(C),XP(g)
- Q(b);::QAR1(F)
- S(a);::QAR1(F)
- S(a);S_CUTQ(b)::R(C),XP(g)
- Refutation
- Q(b);
- Try
- Q(F);CHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::QAB1(F),XQ(b)
- Refutation
- P(e);P_SPINP(e)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,OGATE,XP(G)::B(I),XQ(b)
- R(d);XR(C)::QAR1(F)
- Q(b);N_GUARD::R(C),XP(g)
- Q(b);::QAR1(F)
- S(a);::QAR1(F)
- S(a);S_CUTQ(b)::R(C),XP(g)
- Refutation
- Q(b);
- Try
- Q(F);CHECK,XB(k)
- Vars
- S(i);N_GUARD,P_SPINS(i)::QAB(F),XS(i)
- Refutation
- S(i);XQ(F)
- Try
- P(E);CHECK
- Vars
- S(i);N_GUARD,P_SPINS(i)::QAB(F),XB(k)
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Actual
- Q(F);
- Threat
- QAR1(F)
- Vars
- Q(b);CHECK,OGATE,XP(G)::B(I),XQ(b)
- Q(b);N_GUARD,XP(E)::QAR1(F)
- B(k);N_GUARD::QAB1(F),XB(k)
- S(a);S_CUTQ(b)::QAR1(F)
- Q(b);N_GUARD::QAB1(F)
- S(a);S_CUTQ(b)::QAB1(F)
- S(i);S_CUTR(f)::S(B),XP(e)
- S(i);S_CUTB(k)::QAB1(F)
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