MESON Chess Problem Database
Problem Display
PID: 273031 (1bN1R2K/r1p2Npp/n5rQ/1P1kB3/1P2R3/1P3P2/5q2/8 w - - 0 1)
Widlert, Kjell Einar
Springaren, 1989
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Rd4#
- 1...Qg3
- 2.Rd4#
- 2.Qd2#
- 1...Qd4
- 2.Rxd4#
- 1...Qh4
- 2.Qd2#
- 1...Qf1
- 2.Rd4#
- 1...Qa2
- 2.Rd4#
- 1...Qc2
- 2.Rd4#
- 1...Qd2
- 2.Qxd2#
- 1...Qe2
- 2.Rd4#
- 1...Qg2
- 2.Rd4#
- 1...Qh2
- 2.Rd4#
- 1...Qxf3
- 2.Rd4#
- 1...Rg1
- 2.Se7#
- 2.Rd8#
- 2.Qc6#
- 2.Qe6#
- 1...Rg2
- 2.Se7#
- 2.Rd8#
- 2.Qc6#
- 2.Qe6#
- 1...Rg3
- 2.Se7#
- 2.Rd8#
- 2.Qc6#
- 2.Qe6#
- 1...Rg4
- 2.Se7#
- 2.Rd8#
- 2.Qc6#
- 2.Qe6#
- 1...Rg5
- 2.Se7#
- 2.Rd8#
- 2.Qc6#
- 2.Qe6#
- 1...Rb6
- 2.Se7#
- 1...Rc6
- 2.Se7#
- 2.Qxc6#
- 1...Rd6
- 2.Se7#
- 1...Re6
- 2.Qxe6#
- 1...Qe1
- Tries
- 1.Bd4?
- threat
- 2.Se7#
- 2.R8e5#
- 1...Qxd4
- 2.Se7#
- 1...Qxf3
- 2.R8e5#
- 1...Qg3
- 2.Se7#
- 1...Qh4
- 2.R8e5#
- 1...Qh2
- 2.Se7#
- 1...Rg5
- 2.Se7#
- 2.Rd8#
- 2.Qxg5#
- 2.Qc6#
- 2.Qe6#
- 1...Re6
- 2.Qxe6#
- 1...c6
- 2.Sb6#
- 1...c5!
- threat
- 1.Bd6?
- threat
- 2.Se7#
- 2.R8e5#
- 1...Qxf3
- 2.R8e5#
- 1...c5
- 2.Sb6#
- 2.R8e5#
- 1...Qg3
- 2.Se7#
- 2.Qd2#
- 1...Qd4
- 2.Se7#
- 1...Qh4
- 2.R8e5#
- 2.Qd2#
- 1...Qb2
- 2.Se7#
- 1...Qh2
- 2.Se7#
- 1...Rg5
- 2.Se7#
- 2.Qxg5#
- 2.Qe6#
- 1...Re6
- 2.Qxe6#
- 1...c6
- 2.R8e5#
- 1...cxd6!
- threat
- 1.Bf6?
- threat
- 2.Se7#
- 2.R8e5#
- 2.Rd8#
- 1...Qxf3
- 2.Rd4#
- 2.R8e5#
- 1...Rxf6
- 2.Se7#
- 2.R8e5#
- 1...Sxb4
- 2.R8e5#
- 1...gxf6
- 2.Se7#
- 2.Rd8#
- 1...c5
- 2.Sb6#
- 1...Qg3
- 2.Se7#
- 2.Rd4#
- 2.Qd2#
- 1...Qd4
- 2.Se7#
- 2.Rxd4#
- 2.Rd8#
- 1...Qc5
- 2.R8e5#
- 1...Qb6
- 2.Se7#
- 2.R8e5#
- 1...Qb2
- 2.Se7#
- 2.Rd8#
- 1...Qh2
- 2.Se7#
- 2.Rd4#
- 1...Rg5
- 2.Se7#
- 2.Rd8#
- 2.Qxg5#
- 1...Sc5
- 2.Se7#
- 2.R8e5#
- 1...c6!
- threat
- 1.Rd8+?
- 1...Rd6
- 2.Se7#
- 1...Ke6!
- 1...Rd6
- 1.Qc1?
- threat
- 2.Qc4#
- 1...Qd4
- 2.Rxd4#
- 1...Qf1
- 2.Rd4#
- 1...Qc2
- 2.Rd4#
- 1...Qe2
- 2.Rd4#
- 1...Rc6
- 2.Qxc6#
- 1...Qc5!
- threat
- 1.Qd2+?
- 1...Qd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Qxd2!
- 1...Qd4
- 1.Bd4?
- Keys
- 1.Bxc7!
- threat
- 2.Se7#
- 2.R8e5#
- 1...Qxf3
- 2.R8e5#
- 1...Rxc7
- 2.R8e5#
- 1...Bxc7
- 2.Se7#
- 1...Sxb4
- 2.R8e5#
- 1...Qg3
- 2.Se7#
- 2.Qd2#
- 1...Qd4
- 2.Se7#
- 1...Qh4
- 2.R8e5#
- 2.Qd2#
- 1...Qc5
- 2.R8e5#
- 1...Qb2
- 2.Se7#
- 1...Qh2
- 2.Se7#
- 1...Rg5
- 2.Se7#
- 2.Rd8#
- 2.Qxg5#
- 2.Qc6#
- 2.Qd6#
- 2.Qe6#
- 1...Re6
- 2.Qxe6#
- threat
- 1.Bxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 5
- REMOVED MATES = 10
- Sets
- Q(a);N_GUARD::R1(D)
- Q(a);N_GUARD::R1(D),XQ(a)
- Q(a);N_GUARD::QAR(G)
- Q(a);N_GUARD::QAR(G),XQ(a)
- Q(a);N_GUARD,XP(B)::R1(D)
- R(d);::S(I)
- R(d);OGATE::QAB1(G),XR(d)
- Tries
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(a);XB(F)::S(I)
- Q(a);XP(B)::R1(J)
- Q(a);::S(I)
- Q(a);::R1(J)
- R(d);OGATE::QAB1(G),XR(d)
- P(f);N_GUARD,S_CUTR(d)::S(I)
- Refutation
- P(f);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(B)::R1(J)
- Q(a);::S(I)
- R(d);OGATE::QAB1(G),XR(d)
- P(f);::R1(J)
- Refutation
- P(f);XB(F)
- Try
- B(F);
- Threat
- DUALS(3)
- Vars
- S(c);XP(C)::R1(J)
- P(f);N_GUARD,S_CUTQ(a)::S(I)
- Q(a);::R1(J)
- Refutation
- P(f);
- Try
- R(J);CHECK
- Vars
- R(d);P_SPINR(d)::S(I)
- Refutation
- K(b);P_SPINR(d),S_FLIGHT
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- Q(a);N_GUARD::R1(D),XQ(a)
- Q(a);N_GUARD::R1(D)
- R(d);N_GUARD::QAB1(G),XR(d)
- Refutation
- Q(a);
- Try
- Q(G);CHECK
- Refutation
- Q(a);XQ(G)
- Try
- Actual
- B(F);XP(f)
- Threat
- DUALS(2)
- Vars
- Q(a);XP(B)::R1(J)
- R(e);XB(F)::R1(J)
- B(i);XB(F)::S(I)
- S(c);XP(C)::R1(J)
- Q(a);::S(I)
- Q(a);::R1(J)
- R(d);OGATE::QAB1(G),XR(d)
Developed and maintained by Brian Stephenson.
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