MESON Chess Problem Database
Problem Display
PID: 19487 (2r5/pB1b4/1Q6/1p1Np3/P1k2b2/K1p4r/2RpP3/5NBn w - - 0 1)
Jonsson, Gustav
1st Prize, Tidskrift for Schack, 1959
#2
9 + 11
| 3749 | FIDE Album (1959-1961) | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Rh2
- 2.Rxc3#
- 1...Re3
- 2.Sxd2#
- 1...Rh4
- 2.Rxc3#
- 1...Rh5
- 2.Rxc3#
- 1...Rh6
- 2.Rxc3#
- 1...Rh7
- 2.Rxc3#
- 1...Rhh8
- 2.Rxc3#
- 1...Rc5
- 2.Qxc5#
- 1...Rc6
- 2.Qxb5#
- 1...Ra8
- 2.Qc5#
- 1...Rb8
- 2.Qc5#
- 1...Rd8
- 2.Qc5#
- 1...Re8
- 2.Qc5#
- 1...Rf8
- 2.Qc5#
- 1...Rg8
- 2.Qc5#
- 1...Rch8
- 2.Qc5#
- 1...Bh2
- 2.Sxd2#
- 1...Be3
- 2.Rxc3#
- 1...Bg3
- 2.Sxd2#
- 2.Sfe3#
- 2.Sde3#
- 2.Rxc3#
- 1...Bg4
- 2.Qxb5#
- 1...Bf5
- 2.Qxb5#
- 1...Bc6
- 2.Qc5#
- 1...Be6
- 2.Qxb5#
- 1...Sg3
- 2.Rxc3#
- 1...bxa4
- 2.Qb4#
- 1...b4+
- 2.Qxb4#
- 1...e4
- 2.Qd4#
- 1...axb6
- 2.Sxb6#
- 1...Rh2
- Tries
- 1.Sfe3+?
- 1...Bxe3
- 2.Rxc3#
- 1...Rxe3!
- 1...Bxe3
- 1.Sde3+?
- 1...Rxe3
- 2.Sxd2#
- 1...Bxe3!
- 1...Rxe3
- 1.Sc7?
- threat
- 2.Bd5#
- 2.Qc5#
- 1...b4+
- 2.Qxb4#
- 1...axb6
- 2.Bd5#
- 1...d1Q
- 2.Qc5#
- 1...d1R
- 2.Qc5#
- 1...Rd3
- 2.Qc5#
- 1...Re3
- 2.Sxd2#
- 2.Bd5#
- 1...Be3
- 2.Bd5#
- 1...Bc6
- 2.Qc5#
- 2.Qxc6#
- 1...Be6
- 2.Qc5#
- 2.Qxb5#
- 2.Qc6#
- 2.Qxe6#
- 1...Sf2
- 2.Bd5#
- 1...Rxc7!
- threat
- 1.Bc6?
- threat
- 2.Qc5#
- 2.Qxb5#
- 1...b4+
- 2.Qxb4#
- 1...Rxc6
- 2.Qxb5#
- 1...Bxc6
- 2.Qc5#
- 1...bxa4
- 2.Qc5#
- 2.Qb4#
- 2.Qb5#
- 2.Qa6#
- 1...axb6
- 2.Sxb6#
- 1...Re3
- 2.Sxd2#
- 1...Rb8
- 2.Qc5#
- 1...Be3
- 2.Rxc3#
- 1...a6
- 2.Qc5#
- 1...Sf2!
- threat
- 1.Qa5?
- threat
- 2.Qb4#
- 1...b4+
- 2.Qxb4#
- 1...Rc6
- 2.Qxb5#
- 1...Bc6!
- threat
- 1.Qd6?
- threat
- 2.Qb4#
- 1...b4+
- 2.Qxb4#
- 1...Rc5
- 2.Qxc5#
- 1...Bc6
- 2.Qc5#
- 1...a5
- 2.Sb6#
- 1...Rc6!
- threat
- 1.Sfe3+?
- Keys
- 1.Be3!
- threat
- 2.Sxd2#
- 2.Rxc3#
- 1...b4+
- 2.Qxb4#
- 1...Rxe3
- 2.Sxd2#
- 1...Bxe3
- 2.Rxc3#
- 1...Rc6
- 2.Qxb5#
- 1...Bc6
- 2.Qc5#
- 1...d1Q
- 2.Rxc3#
- 1...d1S
- 2.Sd2#
- 1...d1B
- 2.Sd2#
- 2.Rxc3#
- 1...d1R
- 2.Rxc3#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 22
- Sets
- R(d);N_GUARD::R1(C),XP(c)
- R(d);S_CUTB(f)::S(A),XP(b)
- R(k);N_GUARD::QAR1(H),XR(k)
- R(k);S_CUTB(j)::QAB1(H),XP(g)
- R(k);N_GUARD::QAR1(H)
- B(f);N_GUARD::S(A),XP(b)
- B(f);S_CUTR(d)::R1(C),XP(c)
- B(j);N_GUARD::QAB1(H),XP(g)
- B(j);S_CUTR(k)::QAR1(H)
- S(a);S_CUTR(d)::R1(C),XP(c)
- P(g);OGATE,XP(F)::QAR1(H)
- P(g);CHECK,OGATE::QAR1(H),XP(g)
- P(h);N_GUARD::QAR1(H)
- P(i);XQ(H)::S(G),XP(i)
- Tries
- Try
- S(A);CHECK
- Vars
- B(f);XS(A)::R1(C),XP(c)
- Refutation
- R(d);XS(A)
- Try
- S(G);CHECK
- Vars
- R(d);XS(G)::S(A),XP(b)
- Refutation
- B(f);XS(G)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- P(g);CHECK,OGATE::QAR1(H),XP(g)
- P(i);XQ(H)::B(I)
- P(b);::QAR1(H)
- R(d);::QAR1(H)
- B(f);::B(I)
- S(a);::B(I)
- Refutation
- R(k);XS(G)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- P(g);CHECK,OGATE::QAR1(H),XP(g)
- R(k);XB(I)::QAB1(H),XP(g)
- B(j);XB(I)::QAR1(H)
- P(i);XQ(H)::S(G),XP(i)
- R(d);S_CUTB(f)::S(A),XP(b)
- R(k);::QAR1(H)
- B(f);S_CUTR(d)::R1(C),XP(c)
- P(i);::QAR1(H)
- Refutation
- S(a);
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- P(g);CHECK::QAR1(H),XP(g)
- R(k);S_CUTB(j)::QAB1(H),XP(g)
- Refutation
- B(j);
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- P(g);CHECK::QAR1(H),XP(g)
- R(k);N_GUARD::QAR1(H),XR(k)
- B(j);S_CUTR(k)::QAR1(H)
- P(i);N_GUARD::S(G)
- Refutation
- R(k);
- Try
- Actual
- B(B);
- Threat
- DUALS(2)
- Vars
- P(g);CHECK,OGATE::QAR1(H),XP(g)
- R(d);XB(B)::S(A),XP(b)
- B(f);XB(B)::R1(C),XP(c)
- R(k);S_CUTB(j)::QAB1(H),XP(g)
- B(j);S_CUTR(k)::QAR1(H)
- P(b);::R1(C),XP(c)
- P(b);::S(A)
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