MESON Chess Problem Database
Problem Display
PID: 9942 (8/K1P3pq/2N1N3/Pk1B1p2/6R1/3PBQ2/R2P4/nrrnbb2 w - - 0 1)
Froberg, Johan Hilding Laurentius
Tidskrift for Schack, 1960
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Rxb4#
- 1...Rc4
- 2.Bxc4#
- 1...Rc5
- 2.Sed4#
- 1...Rxc6
- 2.Bxc6#
- 1...Sc2
- 2.Bc4#
- 1...Sb3
- 2.Rb4#
- 1...Sb2
- 2.Rb4#
- 1...Sc3
- 2.Bc4#
- 1...Rb4
- Tries
- 1.Bc5?
- threat
- 2.Scd4#
- 1...Rxc5
- 2.Sed4#
- 1...Rb4
- 2.Rxb4#
- 1...Rc4
- 2.Bxc4#
- 1...Sc2
- 2.Bc4#
- 1...Sb3
- 2.Rb4#
- 1...Bf2!
- threat
- 1.Bb6?
- threat
- 2.Sed4#
- 1...Rxc6
- 2.Bxc6#
- 1...Rb4
- 2.Rxb4#
- 1...Rc4
- 2.Bxc4#
- 1...Sc2
- 2.Bc4#
- 1...Sb3
- 2.Rb4#
- 1...Bf2!
- threat
- 1.Rb2+?
- 1...Sb3
- 2.Rb4#
- 1...Sxb2
- 2.Rb4#
- 1...Rxb2!
- 1...Sb3
- 1.Rga4?
- threat
- 2.Scd4#
- 1...Rxc6
- 2.Bxc6#
- 1...Rb4
- 2.Rxb4#
- 1...Rc4
- 2.Bxc4#
- 1...Sc2
- 2.Bc4#
- 1...Sb3
- 2.Rb4#
- 1...Qh4!
- threat
- 1.Rc4?
- threat
- 2.Scd4#
- 2.Sed4#
- 1...Rxc4
- 2.Bxc4#
- 1...Sc2
- 2.Rc5#
- 1...Sb3
- 2.Rb4#
- 1...Qh4!
- threat
- 1.Qe4?
- threat
- 2.Qa4#
- 1...Rb4
- 2.Qxb4#
- 1...Rc4
- 2.Bxc4#
- 2.Qxc4#
- 1...Sb2
- 2.Qb4#
- 1...Sc3
- 2.Bc4#
- 2.Qc4#
- 1...fxe4!
- threat
- 1.a6?
- threat
- 2.Ra5#
- 1...Rxc6
- 2.Bxc6#
- 1...Sb3
- 2.Rb4#
- 1...Bxd2!
- threat
- 1.Bc5?
- Keys
- 1.Qf4!
- threat
- 2.Qa4#
- 1...Rb4
- 2.Qxb4#
- 1...Rc4
- 2.Qxc4#
- 1...Sb2
- 2.Qb4#
- 1...Sc3
- 2.Qc4#
- threat
- 1.Qf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD::R1(F),XR(b)
- R(c);N_GUARD::B(H),XR(c)
- R(c);SBLOCK::S(J)
- R(c);OGATE,XS(I)::B(H),XR(c)
- S(a);S_CUTR(c)::B(H)
- S(a);S_CUTR(b)::R1(F)
- S(d);S_CUTR(b)::R1(F)
- S(d);S_CUTR(c)::B(H)
- Tries
- Try
- B(D);
- Threat
- S(I)
- Vars
- R(c);SBLOCK,XB(D)::S(J)
- R(b);N_GUARD::R1(F),XR(b)
- R(c);N_GUARD::B(H),XR(c)
- S(a);S_CUTR(c)::B(H)
- S(a);S_CUTR(b)::R1(F)
- Refutation
- B(e);P_PINB(D)
- Try
- B(D);
- Threat
- S(J)
- Vars
- R(c);OGATE,XS(I)::B(H),XR(c)
- R(b);N_GUARD::R1(F),XR(b)
- R(c);N_GUARD::B(H),XR(c)
- S(a);S_CUTR(c)::B(H)
- S(a);S_CUTR(b)::R1(F)
- Refutation
- B(e);P_PINB(D)
- Try
- R(A);CHECK
- Vars
- S(a);P_SPINS(a)::R1(F)
- S(d);XR(A)::R1(F)
- Refutation
- R(b);XR(A)
- Try
- R(F);
- Threat
- S(I)
- Vars
- R(c);OGATE,XS(I)::B(H),XR(c)
- R(b);N_GUARD::R1(F),XR(b)
- R(c);N_GUARD::B(H),XR(c)
- S(a);S_CUTR(c)::B(H)
- S(a);S_CUTR(b)::R1(F)
- Refutation
- Q(j);
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(c);OGATE,XR(F)::B(H),XR(c)
- S(a);S_CUTR(c)::R1(F)
- S(a);S_CUTR(b)::R1(F)
- Refutation
- Q(j);
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- R(b);N_GUARD::QAR1(E),XR(b)
- S(d);S_CUTR(b)::QAR1(E)
- Refutation
- P(h);XQ(E)
- Try
- P(G);
- Threat
- R1(A)
- Vars
- R(c);OGATE,XS(I)::B(H),XR(c)
- S(a);S_CUTR(b)::R1(F)
- Refutation
- B(e);XP(B)
- Try
- Actual
- Q(E);
- Threat
- QAB1(E)
- Vars
- R(b);N_GUARD::QAR1(E),XR(b)
- R(c);N_GUARD::QAB1(E),XR(c)
- S(d);S_CUTR(b)::QAR1(E)
- S(d);S_CUTR(c)::QAB1(E)
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