MESON Chess Problem Database
Problem Display
PID: 59094 (4n2B/8/2p3pP/3B1kNp/r3R1NK/r3R1P1/bb6/q6n w - - 0 1)
Hannelius, Jan Ingvar
2nd Prize, Die Schwalbe, 1965/I
#2
9 + 11
| 23 | Die Schwalbe | 1969 |
| 3772 | FIDE Album (1965-1967) | 1976 |
| 56 | The Problemist | 2005 |
| 6186 | Warsaw Chess Solving Grand Prix | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.Be6#
- 1...Rc3
- 2.Re5#
- 1...Rxe3
- 2.Sxe3#
- 1...Rc4
- 2.Be6#
- 1...Rd4
- 2.Re5#
- 1...Rxe4
- 2.Bxe4#
- 1...Ra5
- 2.Rf4#
- 1...Ra6
- 2.Rf4#
- 1...Ra7
- 2.Rf4#
- 1...Ra8
- 2.Rf4#
- 1...Bb1
- 2.Be6#
- 1...Bb3
- 2.Rf3#
- 1...Bc4
- 2.Rf4#
- 1...Bc3
- 2.Rf3#
- 1...Bd4
- 2.Rf4#
- 1...Rb3
- Tries
- 1.Bc3?
- threat
- 2.Rf3#
- 2.Re5#
- 1...Rxc3
- 2.Re5#
- 1...Rxe4
- 2.Bxe4#
- 1...Bxc3
- 2.Rf3#
- 1...Sxg3
- 2.Rf3#
- 1...Qc1
- 2.Re5#
- 1...Qd1
- 2.Re5#
- 1...Qf1
- 2.Re5#
- 1...Bc1
- 2.Re5#
- 1...hxg4!
- threat
- 1.Bd4?
- threat
- 2.Rf4#
- 2.Re5#
- 1...Rxe3
- 2.Sxe3#
- 2.Rf4#
- 1...Rxd4
- 2.Re5#
- 1...Bxd4
- 2.Rf4#
- 1...hxg4
- 2.Rf4#
- 1...Qf1
- 2.Re5#
- 1...Sxg3!
- threat
- 1.Rb3?
- threat
- 2.Se3#
- 2.Be6#
- 1...Rxb3
- 2.Be6#
- 1...Rxe4
- 2.Bxe4#
- 1...Bxb3
- 2.Se3#
- 1...Bxh8
- 2.Be6#
- 1...hxg4
- 2.Be6#
- 1...cxd5
- 2.Se3#
- 1...Qc1
- 2.Be6#
- 1...Qe1
- 2.Be6#
- 1...Qg1
- 2.Be6#
- 1...Bc1
- 2.Be6#
- 1...Bd4
- 2.Be6#
- 2.Rf4#
- 1...Bg7
- 2.Be6#
- 1...Sc7
- 2.Se3#
- 1...Sg7!
- threat
- 1.Rc3?
- threat
- 2.Se3#
- 2.Re5#
- 1...Rxc3
- 2.Re5#
- 1...Rxe4
- 2.Bxe4#
- 1...Bxc3
- 2.Se3#
- 1...Sxg3
- 2.Se3#
- 1...hxg4
- 2.Re5#
- 1...Qc1
- 2.Re5#
- 1...Qg1
- 2.Re5#
- 1...Bc1
- 2.Re5#
- 1...Sg7
- 2.Re5#
- 1...Qe1!
- threat
- 1.Rc4?
- threat
- 2.Be4#
- 2.Be6#
- 1...Rxe3
- 2.Sxe3#
- 1...Rxc4
- 2.Be6#
- 1...Bxc4
- 2.Be4#
- 1...Sxg3
- 2.Be6#
- 1...Qb1
- 2.Be6#
- 1...Bb1
- 2.Be6#
- 1...Sf2
- 2.Be6#
- 1...Sd6
- 2.Be6#
- 1...Sf6
- 2.Be6#
- 1...Sc7
- 2.Be4#
- 1...Sg7
- 2.Be4#
- 1...cxd5!
- threat
- 1.Bc3?
- Keys
- 1.Rd4!
- threat
- 2.Be4#
- 2.Re5#
- 1...Rxe3
- 2.Sxe3#
- 1...Rxd4
- 2.Re5#
- 1...Bxd5
- 2.Re5#
- 1...Bxd4
- 2.Be4#
- 1...Sxg3
- 2.Re5#
- 1...cxd5
- 2.Re5#
- 1...Qb1
- 2.Re5#
- 1...Qe1
- 2.Be4#
- 1...Bb1
- 2.Be6#
- 2.Re5#
- 1...Sf2
- 2.Re5#
- 1...Sd6
- 2.Re5#
- 1...Sf6
- 2.Re5#
- threat
- 1.Rd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 8
- REMOVED MATES = 12
- Sets
- R(e);S_CUTB(c)::B(F)
- R(e);S_CUTB(d)::R1(C)
- R(e);XR(A)::S(D),XR(e)
- R(f);S_CUTB(c)::B(F)
- R(f);S_CUTB(d)::R1(C)
- R(f);OGATE,P_PINS(D),XR(C)::B(F),XR(f)
- R(f);N_GUARD::R1(C)
- B(c);N_GUARD::B(F)
- B(c);S_CUTR(e)::R(A)
- B(c);S_CUTR(f)::R1(C)
- B(d);S_CUTR(e)::R(A)
- B(d);S_CUTR(f)::R1(C)
- Tries
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(e);XB(I)::R1(C)
- R(f);OGATE,P_PINS(D),XR(C)::B(F),XR(f)
- B(d);XB(I)::R(A)
- S(b);XP(B)::R(A)
- Q(a);::R1(C)
- B(d);::R1(C)
- Refutation
- P(h);XS(D)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(f);XB(I)::R1(C)
- B(d);XB(I)::R1(C)
- P(h);XS(D)::R1(C)
- Q(a);::R1(C)
- Refutation
- S(b);XP(B)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(e);XR(A)::B(F)
- R(f);OGATE,P_PINS(D),XR(C)::B(F),XR(f)
- B(c);XR(A)::S(D)
- B(d);XB(I)::B(F)
- P(h);XS(D)::B(F)
- P(i);XB(F)::S(D)
- Q(a);::B(F)
- Q(a);P_PINP(B)::B(F)
- B(d);::B(F)
- S(k);::S(D)
- Refutation
- S(k);
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(e);XR(A)::R1(C)
- R(f);OGATE,P_PINS(D),XR(C)::B(F),XR(f)
- B(d);XR(A)::S(D)
- S(b);XP(B)::S(D)
- P(h);XS(D)::R1(C)
- Q(a);::R1(C)
- B(d);::R1(C)
- S(k);::R1(C)
- Refutation
- Q(a);P_PINP(B)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(e);XR(A)::S(D),XR(e)
- R(f);P_PINS(D),XR(C)::B(F)
- B(c);XR(C)::B(F)
- S(b);XP(B)::B(F)
- Q(a);::B(F)
- B(c);::B(F)
- S(b);::B(F)
- S(k);::B(F)
- Refutation
- P(i);XB(F)
- Try
- Actual
- R(C);
- Threat
- DUALS(2)
- Vars
- R(e);XR(A)::S(D),XR(e)
- R(f);P_PINS(D),XR(C)::R1(A)
- B(c);XB(F)::R1(A)
- B(d);XR(C)::B(F)
- S(b);XP(B)::R1(A)
- P(i);XB(F)::R1(A)
- Q(a);::R1(A)
- Q(a);P_PINP(B)::B(F)
- S(b);::R1(A)
- S(k);::R1(A)
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