MESON Chess Problem Database
Problem Display
PID: 57841 (3RR3/4Bp2/7K/3N3b/1p1k4/5qQ1/1N4B1/8 w - - 0 1)
Mangalis, Laimons
1st HM., Gamage MT (Chess Life), 1957-1958
#2
8 + 5
| 268 | Chess Life | 1959 |
| 56 | The Problemist | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ke4
- 2.Qf4#
- 1...Qd1
- 2.Sc3#
- 2.Sxb4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Qf4#
- 2.Qe3#
- 1...Qe2
- 2.Sc3#
- 2.Sxb4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Qxg2
- 2.Qe3#
- 1...Qg4
- 2.Qe3#
- 1...Qxd5
- 2.Rxd5#
- 1...Qf1
- 2.Sc3#
- 2.Sxb4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Qe3#
- 1...Qf2
- 2.Sc3#
- 2.Sxb4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Qa3
- 2.Sc3#
- 2.Sxb4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Qf4#
- 1...Qb3
- 2.Qf4#
- 1...Qc3
- 2.Sxc3#
- 2.Se3#
- 2.Sxb4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Qf4#
- 1...Qe3+
- 2.Qxe3#
- 1...Qf4+
- 2.Qxf4#
- 1...Qf5
- 2.Qe3#
- 1...Qf6+
- 2.Sxf6#
- 1...Ke4
- Tries
- 1.Sc3+?
- 1...Ke3
- 2.Sbd1#
- 2.Sc4#
- 2.Bxb4#
- 2.Bh4#
- 2.Bc5#
- 2.Bg5#
- 2.Bf6#
- 2.Bf8#
- 2.Rd3#
- 1...Qd5
- 2.Sb5#
- 2.Rxd5#
- 1...Kxc3!
- 1...Ke3
- 1.Se3+?
- 1...Kxe3
- 2.Bxb4#
- 2.Bh4#
- 2.Bc5#
- 2.Bg5#
- 2.Bf6#
- 2.Bf8#
- 1...Ke4
- 2.Bxb4#
- 2.Bh4#
- 2.Bc5#
- 2.Bg5#
- 2.Bf6#
- 2.Bf8#
- 1...Qd5
- 2.Sc2#
- 2.Sf5#
- 1...Kc3!
- 1...Kxe3
- 1.Sf6+?
- 1...Ke3
- 2.Bxb4#
- 2.Bc5#
- 2.Bf8#
- 1...Qd5
- 2.Rxd5#
- 1...Kc3!
- 1...Ke3
- 1.Bxb4?
- threat
- 2.Qe5#
- 1...Qe3+
- 2.Sxe3#
- 2.Sf4#
- 2.Qxe3#
- 1...Qf4+
- 2.Sxf4#
- 2.Qxf4#
- 1...Qf6+
- 2.Sxf6#
- 1...Qxg3
- 2.Sf4#
- 2.Re4#
- 1...Qe2
- 2.Sc3#
- 2.Se3#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 2.Qc3#
- 1...Qe4
- 2.Rxe4#
- 2.Qc3#
- 1...Qf5
- 2.Qc3#
- 2.Qe3#
- 1...f6!
- threat
- 1.Bf8?
- threat
- 2.Qe5#
- 1...Qe3+
- 2.Qxe3#
- 1...Qf4+
- 2.Sxf4#
- 2.Qxf4#
- 1...Qf6+
- 2.Sxf6#
- 1...Qxg3
- 2.Re4#
- 1...Qe2
- 2.Sc3#
- 2.Sxb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Qe4
- 2.Rxe4#
- 1...Qf5
- 2.Qe3#
- 1...f6!
- threat
- 1.Qf4+?
- 1...Qe4
- 2.Qxe4#
- 1...Qxf4+!
- 1...Qe4
- 1.Qxf3?
- threat
- 2.Qe4#
- 2.Qe3#
- 2.Qf4#
- 2.Qf6#
- 1...Ke5
- 2.Bc5#
- 2.Bf6#
- 2.Qe4#
- 2.Qf6#
- 1...f6
- 2.Qe4#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf6#
- 1...Bg6
- 2.Qe3#
- 2.Qf6#
- 1...f5
- 2.Qe3#
- 2.Qf4#
- 1...Bxf3!
- threat
- 1.Sc3+?
- Keys
- 1.Qc7!
- threat
- 2.Bc5#
- 1...Qe3+
- 2.Sf4#
- 1...Qf4+
- 2.Qxf4#
- 1...Qf6+
- 2.Bxf6#
- 1...Ke4
- 2.Qf4#
- 1...Qxd5
- 2.Bf6#
- 1...Qc3
- 2.Bf6#
- 2.Qf4#
- threat
- 1.Qc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- K(c);P-FLIGHT,P_SPINQ(a)::QAR1(C)
- Q(a);OGATE,XB(B)::QAB1(C)
- Q(a);OGATE::QAB1(C)
- Q(a);OGATE,P_SPINQ(a),XS(D)::R1(G),XQ(a)
- Q(a);N_GUARD::QAR2(C)
- Q(a);CHECK,OGATE::QAB1(C),XQ(a)
- Q(a);CHECK,N_GUARD::QAR2(C),XQ(a)
- Q(a);CHECK,N_GUARD::R(G)+S(D),XQ(a)
- Tries
- Try
- S(D);CHECK
- Refutation
- K(c);P_SPINQ(a),S_FLIGHT,XS(D)
- Try
- S(D);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- S(D);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::R1(G),XQ(a)
- Refutation
- K(c);P_SPINQ(a),S_FLIGHT
- Try
- B(F);XP(b)
- Threat
- QAB1(C)
- Vars
- Q(a);CHECK,N_GUARD::R(G)+S(D),XQ(a)
- Refutation
- P(e);
- Try
- B(F);
- Threat
- QAB1(C)
- Vars
- Q(a);CHECK,OGATE::QAB1(C),XQ(a)
- Q(a);CHECK,N_GUARD::R(G)+S(D),XQ(a)
- Q(a);N_GUARD,XQ(C)::R1(H)
- Q(a);N_GUARD::R1(H),XQ(a)
- Q(a);OGATE::QAB1(C)
- Refutation
- P(e);
- Try
- Q(C);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::QAR1(C),XQ(a)
- Refutation
- Q(a);CHECK,XQ(C)
- Try
- Q(C);XQ(a)
- Threat
- DUALS(4)
- Refutation
- B(d);XQ(C)
- Try
- Actual
- Q(C);
- Threat
- B(F)
- Vars
- Q(a);CHECK,N_GUARD,SBLOCK::R(G)+S(D)
- Q(a);CHECK,N_GUARD::QAR2(C),XQ(a)
- Q(a);CHECK,N_GUARD::B(F),XQ(a)
- K(c);P-FLIGHT,P_SPINQ(a)::QAR1(C)
- Q(a);N_GUARD,P_SPINQ(a),XS(D)::B(F)
Developed and maintained by Brian Stephenson.
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