MESON Chess Problem Database
Problem Display
PID: 133701 (2KR4/3N1P1r/R2NpPQ1/1p1kp3/bBp5/Pp2P1b1/6q1/2r5 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
2nd HM., Al Hamishmar, 1967
#2
11 + 11
| 23 | Die Schwalbe | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qe4#
- 1...Qh3
- 2.Qe4#
- 1...Qe4
- 2.Qxe4#
- 1...Qg1
- 2.Qe4#
- 1...Qa2
- 2.Qe4#
- 1...Qb2
- 2.Qe4#
- 1...Qd2
- 2.Qe4#
- 1...Qe2
- 2.Qe4#
- 1...Qf2
- 2.Qe4#
- 1...Qh2
- 2.Qe4#
- 1...c3
- 2.Qd3#
- 1...Qf1
- Tries
- 1.Se4?
- threat
- 2.Sdc5#
- 2.Sb8#
- 2.Sf8#
- 2.Rd6#
- 1...Rxf7
- 2.Rd6#
- 1...Rh8
- 2.Sf8#
- 2.Rd6#
- 1...c3!
- threat
- 1.Sxb5?
- threat
- 2.Sc7#
- 2.Sc5#
- 2.Sb8#
- 2.Sf8#
- 2.Rd6#
- 1...Rxf7
- 2.Sc7#
- 2.Rd6#
- 1...Bxb5
- 2.Rd6#
- 1...c3
- 2.Qd3#
- 1...Rh8
- 2.Sc7#
- 2.Sf8#
- 2.Rd6#
- 1...e4!
- threat
- 1.Sb7?
- threat
- 2.Sdc5#
- 2.Sb8#
- 2.Sf8#
- 2.Rd6#
- 1...Rxf7
- 2.Rd6#
- 1...c3
- 2.Qd3#
- 1...Rh8
- 2.Sf8#
- 2.Rd6#
- 1...e4!
- threat
- 1.Se8?
- threat
- 2.Sc5#
- 2.Sb8#
- 2.Sf8#
- 2.Sc7#
- 2.Rd6#
- 1...Rxf7
- 2.Sc7#
- 2.Rd6#
- 1...c3
- 2.Qd3#
- 1...e4!
- threat
- 1.Sc5?
- threat
- 2.Sde4#
- 2.Sxb5#
- 2.Sf5#
- 2.Sdb7#
- 2.Se8#
- 1...Rxf7
- 2.Sxf7#
- 1...Qe4
- 2.Sdxe4#
- 2.Sxb5#
- 2.Sf5#
- 2.Sdb7#
- 2.Se8#
- 2.Qxe4#
- 1...Rh8
- 2.Se8#
- 1...c3
- 2.Qd3#
- 1...e4!
- threat
- 1.Sxe5?
- threat
- 2.Sdxc4#
- 1...Kxe5
- 2.Qg5#
- 1...Rxf7
- 2.Sdxf7#
- 1...Bxe5
- 2.Qxg2#
- 1...c3
- 2.Sdc4#
- 1...Rh8!
- threat
- 1.Sb8?
- threat
- 2.Se4#
- 2.Sxb5#
- 2.Sb7#
- 2.Se8#
- 1...Rxf7
- 2.Sxf7#
- 1...Qe4
- 2.Sxe4#
- 2.Sxb5#
- 2.Sf5#
- 2.Sb7#
- 2.Se8#
- 2.Qxe4#
- 1...Rh8
- 2.Se8#
- 1...c3
- 2.Qd3#
- 1...e4!
- threat
- 1.Sf8?
- threat
- 2.Se4#
- 2.Sxb5#
- 2.Sb7#
- 2.Se8#
- 1...Rxf7
- 2.Sxf7#
- 1...Qe4
- 2.Sxe4#
- 2.Sxb5#
- 2.Sf5#
- 2.Sb7#
- 2.Se8#
- 2.Qxe4#
- 1...c3
- 2.Qd3#
- 1...e4!
- threat
- 1.e4+?
- 1...Qxe4
- 2.Qxe4#
- 1...Kd4!
- 1...Qxe4
- 1.Se4?
- Keys
- 1.Sxc4!
- threat
- 2.Sxe5#
- 2.Qd3#
- 1...Rxc4+
- 2.Sc5#
- 1...Kxc4
- 2.Sb6#
- 1...Rxf7
- 2.Qd3#
- 1...bxc4
- 2.Rd6#
- 1...e4
- 2.Se5#
- 1...Qf1
- 2.Sxe5#
- 1...Qe4
- 2.Sxe5#
- 1...Qb2
- 2.Sxe5#
- 1...Qc2
- 2.Sxe5#
- 1...Qd2
- 2.Sxe5#
- 1...Qe2
- 2.Sxe5#
- 1...Rd1
- 2.Sdxe5#
- 1...Rc3
- 2.Sxe5#
- 1...Rh4
- 2.Sxe5#
- 1...Rh8
- 2.Qd3#
- threat
- 1.Sxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 10
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD::QAB1(G)
- Q(b);N_GUARD::QAB1(G),XQ(b)
- P(f);N_GUARD::QAR2(G)
- Tries
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- R(k);XP(I)::R1(D)
- Refutation
- P(f);
- Try
- S(E);XP(g)
- Threat
- DUALS(5)
- Vars
- B(e);XS(E)::R1(D)
- P(f);N_GUARD::QAR2(G)
- Refutation
- P(i);
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- R(k);XP(I)::R1(D)
- P(f);N_GUARD::QAR2(G)
- Refutation
- P(i);
- Try
- S(E);
- Threat
- DUALS(5)
- Vars
- P(f);N_GUARD::QAR2(G)
- Refutation
- P(i);
- Try
- S(H);
- Threat
- DUALS(5)
- Vars
- R(k);XP(I)::R(K)+S(E),XR(k)
- R(k);P_PINR(K)::R(K)+S(E)
- P(f);N_GUARD::QAR2(G)
- Refutation
- P(i);
- Try
- S(H);XP(i)
- Threat
- R(K)+S(E),XP(f)
- Vars
- K(h);OGATEB,P-FLIGHT,XS(H)::QAR2(G)
- R(k);XP(I)::R(K)+S(E),XR(k)
- B(d);OGATE,SBLOCK,XS(H)::QAB(G),XQ(b)
- P(f);::R(K)+S(E)
- Refutation
- R(k);P_PINR(K)
- Try
- S(H);
- Threat
- DUALS(4)
- Vars
- R(k);XP(I)::R(K)+S(E),XR(k)
- R(k);P_PINR(K)::R(K)+S(E)
- P(f);N_GUARD::QAR2(G)
- Refutation
- P(i);
- Try
- S(H);
- Threat
- DUALS(4)
- Vars
- R(k);XP(I)::R(K)+S(E),XR(k)
- P(f);N_GUARD::QAR2(G)
- Refutation
- P(i);
- Try
- P(B);CHECK
- Vars
- Q(b);OGATE,XP(B)::QAB1(G),XQ(b)
- Refutation
- K(h);P-FLIGHT
- Try
- Actual
- S(E);P_SPINS(E),XP(f)
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,SBLOCK,XS(E)::R(K)+S(H)
- K(h);S_FLIGHT,XS(E)::S(H)
- R(k);XP(I)::QAR2(G)
- P(g);SBLOCK,XS(E)::R1(D)
- P(i);::R(K)+S(H)
- Q(b);::R(K)+S(H),XP(i)
- R(a);N_PINS(E)::R(K)+S(H),XP(i)
- R(a);::R(K)+S(H),XP(i)
- R(k);::R(K)+S(H),XP(i)
- R(k);P_PINR(K)::QAR2(G)
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