MESON Chess Problem Database
Problem Display
PID: 55371 (nB2R3/bBP5/2Rq1p2/Qppk1p2/8/1P2PP2/3K2p1/8 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Troll, 1992
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qg3
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qf4
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qe5
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qf8
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qe6
- 2.Rcxe6#
- 1...Qd8
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.cxd8Q#
- 2.cxd8R#
- 1...b4
- 2.Rxc5#
- 1...c4
- 2.bxc4#
- 1...Qh2
- Tries
- 1.Kc2?
- threat
- 2.Qd2#
- 1...Qe6
- 2.Rcxe6#
- 1...Qf4
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qe5
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...b4
- 2.Rxc5#
- 1...c4
- 2.bxc4#
- 1...Qe7!
- threat
- 1.Qc3?
- threat
- 2.Rxc5#
- 2.Qd3#
- 1...Qxc7
- 2.Qd3#
- 1...Qxc6
- 2.Qd3#
- 1...Qh2
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qd3#
- 1...Qg3
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qd3#
- 1...Qf4
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qe5
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qe7
- 2.Ra6#
- 2.Rb6#
- 2.Rxf6#
- 1...Qf8
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qd3#
- 1...Qe6
- 2.Rcxe6#
- 1...Qd7
- 2.Qd3#
- 1...Qd8
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Rxd8#
- 2.Qd3#
- 2.cxd8Q#
- 2.cxd8R#
- 1...c4!
- threat
- 1.Qxb5?
- threat
- 2.Rxc5#
- 2.Qd3#
- 2.Qc4#
- 1...Qxc7
- 2.Qd3#
- 2.Qc4#
- 1...Qxc6
- 2.Qd3#
- 2.Qxc6#
- 1...Qe6
- 2.Rcxe6#
- 1...Qh2
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qd3#
- 2.Qc4#
- 1...Qg3
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qd3#
- 2.Qc4#
- 1...Qf4
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qe5
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qc4#
- 1...Qf8
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qd3#
- 2.Qc4#
- 1...Qd7
- 2.Qd3#
- 2.Qc4#
- 1...Qd8
- 2.Ra6#
- 2.Rb6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qd3#
- 2.Qc4#
- 2.cxd8Q#
- 2.cxd8R#
- 1...Sb6
- 2.Rxc5#
- 2.Qd3#
- 1...Qe7!
- threat
- 1.e4+?
- 1...Kd4
- 2.Rxd6#
- 2.Qc3#
- 2.Qa1#
- 1...fxe4!
- 1...Kd4
- 1.c8Q?
- threat
- 2.Rxc5#
- 2.Rxd6#
- 1...Qxb8
- 2.Qe6#
- 1...Qxc6
- 2.Bxc6#
- 2.Rd8#
- 2.Qad8#
- 2.Qxf5#
- 2.Qe6#
- 2.Qd7#
- 2.Qxc6#
- 2.Qcd8#
- 1...Bxb8
- 2.Rxc5#
- 1...Qh2
- 2.Rxc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qe6#
- 1...Qg3
- 2.Rxc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qe6#
- 1...Qf4
- 2.Rxc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qe6#
- 1...Qe5
- 2.Rxc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 1...Qc7
- 2.Qe6#
- 1...Qe7
- 2.Rxc5#
- 1...Qf8
- 2.Rxc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Qxf5#
- 2.Qe6#
- 1...Qe6
- 2.Rxc5#
- 2.Rcxe6#
- 2.Qxe6#
- 1...Qd7
- 2.Rxc5#
- 2.Rd6#
- 2.Qxd7#
- 1...Qd8
- 2.Rxc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Rxd8#
- 2.Qaxd8#
- 2.Qxf5#
- 2.Qe6#
- 2.Qcxd8#
- 1...c4
- 2.Rc5#
- 2.Rxd6#
- 2.bxc4#
- 1...Sc7!
- threat
- 1.Kc2?
- Keys
- 1.c8S!
- threat
- 2.Rxd6#
- 1...Qxb8
- 2.Rd6#
- 1...Qxc6
- 2.Qd8#
- 1...Qh2
- 2.Se7#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Rc7#
- 1...Qg3
- 2.Se7#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Rc7#
- 1...Qf4
- 2.Se7#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Rc7#
- 1...Qe5
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Rc7#
- 1...Qc7
- 2.Rd6#
- 2.Rxc7#
- 1...Qe7
- 2.Sxe7#
- 1...Qf8
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Rc7#
- 1...Qe6
- 2.Rcxe6#
- 1...Qd7
- 2.Rd6#
- 1...Qd8
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rxf6#
- 2.Rc7#
- 2.Rxd8#
- 2.Qxd8#
- 1...c4
- 2.bxc4#
- threat
- 1.c8S!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- Q(f);OGATE::B(G)+R(F),XQ(f)
- P(b);P_SPINP(c)::B(G)+R(F),DCHECK,XP(c)
- P(c);OGATE,P_SPINP(b)::P(B),XP(c)
- Tries
- Try
- K(A);P-FLIGHT
- Threat
- QAR(E)
- Vars
- Q(f);OGATE::B(G)+R(F),XQ(f)
- P(b);P_SPINP(c)::B(G)+R(F),DCHECK,XP(c)
- P(c);OGATE,P_SPINP(b)::P(B),XP(c)
- Refutation
- Q(f);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(f);XP(H)::QAR2(E)
- Q(f);P_SPINQ(f),XR(F)::QAR2(E)
- Q(f);OGATE::B(G)+R(F),XQ(f)
- Q(f);::QAR2(E)
- Refutation
- P(c);
- Try
- Q(E);P_PINP(c),XP(b)
- Threat
- DUALS(3)
- Vars
- Q(f);OGATE::B(G)+R(F),XQ(f)
- Refutation
- Q(f);
- Try
- P(C);CHECK
- Refutation
- P(e);XP(C)
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,XB(I)::QAB1(H)
- B(h);XB(I)::B(G)+R(F),DCHECK,XP(c)
- Q(f);N_GUARD::QAB1(H)
- Q(f);::B(G)+R(F),DCHECK,XP(c)
- Refutation
- S(i);
- Try
- Actual
- P(H);
- Threat
- B(G)+R(F),DCHECK,XQ(f)
- Vars
- Q(f);XB(I)::B(G)+R(F),DCHECK
- Q(f);OGATEB,P_SPINQ(f),XR(F)::QAR(E)
- Q(f);N_GUARD::S(H),XQ(f)
- Q(f);OGATE::B(G)+R(F),XQ(f)
- Q(f);::B(G)+R(F),DCHECK
- P(c);OGATE,P_SPINP(b)::P(B),XP(c)
Developed and maintained by Brian Stephenson.
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