MESON Chess Problem Database
Problem Display
PID: 140651 (4R3/5P2/b1pp3p/3k4/1q3Q1K/1P1nBr1p/3RNN2/2r3nB w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
5th Comm., BCF 137. Ty., 1974-1975
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qxd2
- 2.Qd4#
- 2.Qe4#
- 1...Qa3
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qc3
- 2.Qe4#
- 1...Qa5
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qc5
- 2.Qe4#
- 2.Qf5#
- 1...Qxb3
- 2.Qd4#
- 2.Qe4#
- 1...Qd4
- 2.Qxd4#
- 1...Qe4
- 2.Qxe4#
- 1...Qxf4+
- 2.Sxf4#
- 1...Qb5
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qb6
- 2.Qe4#
- 2.Qf5#
- 1...Qb7
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qb8
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Bc4
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qxd2
- Tries
- 1.Sc3+?
- 1...Qxc3
- 2.Qe4#
- 1...Rxc3!
- 1...Qxc3
- 1.Sxd3?
- threat
- 2.Sxb4#
- 1...Qxf4+
- 2.Sexf4#
- 2.Sdxf4#
- 1...Qxd2
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qxb3
- 2.Sb4#
- 2.Qd4#
- 2.Qe4#
- 1...Qa3
- 2.Sb4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qc3
- 2.Sb4#
- 2.Qe4#
- 1...Qa5
- 2.Sb4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qc5
- 2.Sb4#
- 2.Qe4#
- 2.Qf5#
- 1...Qa4
- 2.Sb4#
- 1...Qc4
- 2.Sb4#
- 1...Qd4
- 2.Qxd4#
- 1...Qe4
- 2.Sb4#
- 2.Qxe4#
- 1...Qb5
- 2.Sb4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qb6
- 2.Sb4#
- 2.Qe4#
- 2.Qf5#
- 1...Qb7
- 2.Sb4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Qb8
- 2.Sb4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf5#
- 1...Bxd3!
- threat
- 1.Sg4?
- threat
- 2.Sf6#
- 2.Qf5#
- 1...Qxd2
- 2.Sf6#
- 2.Qd4#
- 2.Qe4#
- 1...Qxb3
- 2.Sf6#
- 2.Qd4#
- 2.Qe4#
- 1...Qxf4
- 2.Sxf4#
- 1...Qd4
- 2.Qxd4#
- 1...Qc3
- 2.Qe4#
- 1...Qe4
- 2.Sf6#
- 2.Qxe4#
- 1...Bc8
- 2.Sf6#
- 1...c5!
- threat
- 1.Bxf3+?
- 1...Qe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Sxf3+!
- 1...Qe4
- 1.Bd4?
- threat
- 2.Qe4#
- 1...Qxd4
- 2.Qxd4#
- 1...Sxf2
- 2.Qf5#
- 1...Sxf4
- 2.Sxf4#
- 1...Sc5
- 2.Qf5#
- 1...Qxb3!
- threat
- 1.Rxd3+?
- 1...Qd4
- 2.Qxd4#
- 1...Bxd3!
- 1...Qd4
- 1.Qxb4?
- threat
- 2.Sf4#
- 2.Qd4#
- 2.Qe4#
- 1...Sxe2
- 2.Bxf3#
- 2.Qe4#
- 1...c5
- 2.Qe4#
- 1...Bc4
- 2.Sf4#
- 1...Rc4+!
- threat
- 1.f8Q?
- threat
- 2.Qf5#
- 2.Qf7#
- 2.Qg8#
- 1...Qxf4+
- 2.Sxf4#
- 1...Qxd2
- 2.Q4xd6#
- 2.Q8xd6#
- 2.Qd4#
- 2.Qe4#
- 2.Q4f7#
- 2.Q8f7#
- 2.Qg8#
- 1...Qd4
- 2.Qxd6#
- 2.Qxd4#
- 1...c5
- 2.Qxd6#
- 1...Qc3
- 2.Q4xd6#
- 2.Q8xd6#
- 2.Qe4#
- 2.Q4f7#
- 2.Q8f7#
- 2.Qg8#
- 1...Qe4
- 2.Qxd6#
- 2.Qxe4#
- 1...Qb7
- 2.Q4xd6#
- 2.Q8xd6#
- 2.Qd4#
- 2.Qe4#
- 2.Q4f5#
- 2.Q8f5#
- 1...Bc8!
- threat
- 1.Sc3+?
- Keys
- 1.Se4!
- threat
- 2.Sf6#
- 1...Rxf4+
- 2.Sxf4#
- 1...Qxe4
- 2.Qxe4#
- 1...Rxe3
- 2.Qf5#
- 1...c5
- 2.Qxd6#
- 1...Qc3
- 2.Qxd6#
- 1...Qd4
- 2.Qxd6#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(f);N_GUARD,N_PINQ(G)::QAB1(G)
- Q(f);N_GUARD,N_SPINS(c)::QAR1(G),XQ(f)
- Q(f);N_GUARD,N_SPINR(d)::QAB1(G),XQ(f)
- Q(f);CHECK,XQ(G)::S(C),XQ(f)
- Tries
- Try
- S(C);CHECK
- Vars
- Q(f);N_PINQ(G),XS(C)::QAB1(G)
- Refutation
- R(a);XS(C)
- Try
- S(D);XS(c)
- Threat
- R(B)+S(D),DCHECK,XQ(f)
- Vars
- Q(f);::R(B)+S(D),DCHECK
- Q(f);N_GUARD::QAR1(G),XQ(f)
- Refutation
- B(h);P_SPINB(h),XS(D)
- Try
- S(D);N_SPINQ(G)
- Threat
- DUALS(2)
- Vars
- Q(f);P_PINS(D),XQ(G)::S(C),XQ(f)
- Q(f);N_GUARD,N_SPINS(c)::QAR1(G),XQ(f)
- Q(f);N_GUARD::QAB1(G)
- B(h);::S(D)
- Refutation
- P(i);
- Try
- B(A);CHECK,XR(d)
- Refutation
- S(b);CHECK,XB(A)
- Try
- B(F);N_PINS(c),N_SPINQ(G)
- Threat
- QAB1(G)
- Vars
- Q(f);OGATE,P_PINQ(G),XB(F)::QAR1(G),XQ(f)
- S(c);N_GUARD,XS(D)::QAR2(G)
- S(c);XQ(G)::S(C),XS(c)
- S(c);N_GUARD::QAR2(G)
- Refutation
- Q(f);XP(E)
- Try
- R(B);CHECK,XS(c)
- Vars
- Q(f);N_GUARD,P_SPINQ(f)::QAR1(G),XQ(f)
- Refutation
- B(h);XR(B)
- Try
- Q(G);N_SPINQ(G),XQ(f)
- Threat
- DUALS(3)
- Vars
- P(i);::QAB1(G)
- B(h);::S(C)
- Refutation
- R(a);CHECK
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- Q(f);CHECK,XQ(G)::S(C),XQ(f)
- P(i);S_CUTQ(f)::QAR1(I),XP(j)
- Refutation
- B(h);
- Try
- Actual
- S(D);N_PINR(d),N_SPINQ(G)
- Threat
- S(D)
- Vars
- R(d);CHECK,XQ(G)::S(C),XR(d)
- Q(f);OGATE,P_PINQ(G),XS(D)::QAB1(G),XQ(f)
- R(d);N_GUARD,XB(F)::QAR2(G)
- P(i);S_CUTQ(f)::QAR1(G),XP(j)
- Q(f);N_GUARD::QAR1(G),XP(j)
- Q(f);N_GUARD,N_SPINS(c)::QAR1(G),XP(j)
Developed and maintained by Brian Stephenson.
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