MESON Chess Problem Database
Problem Display
PID: 42544 (4k3/7N/2RRP2K/4QB2/1P5B/qp6/1b6/1brr4 w - - 0 1)
Casa, Alex
1st Prize, Europe Echecs, 1968
#2
9 + 7
| 3751 | FIDE Album (1968-1970) | 1977 |
SOLUTION
- SOUND
- Sets
- 1...Rc2
- 2.Bg6#
- 1...Rc3
- 2.Qh8#
- 1...Re1
- 2.Rd8#
- 1...Rf1
- 2.Rd8#
- 1...Rg1
- 2.Rd8#
- 1...Rh1
- 2.Rd8#
- 1...Rd3
- 2.Bg6#
- 1...Rd4
- 2.Qh8#
- 1...Ba2
- 2.Bg6#
- 1...Bc2
- 2.Rc8#
- 1...Bd3
- 2.Rd8#
- 1...Bc3
- 2.Rc8#
- 1...Bd4
- 2.Rd8#
- 1...Rc2
- Tries
- 1.Bxb1?
- threat
- 2.Bg6#
- 2.Qh5#
- 1...Rxb1
- 2.Rc8#
- 2.Qh5#
- 1...Bxe5
- 2.Bg6#
- 1...Qa5
- 2.Bg6#
- 1...Rc2
- 2.Qh5#
- 1...Rc5
- 2.Bg6#
- 1...Rf1
- 2.Rd8#
- 1...Rg1
- 2.Rd8#
- 1...Rd3
- 2.Qh5#
- 1...Rd5
- 2.Bg6#
- 1...Qa7!
- threat
- 1.Bc2?
- threat
- 2.Rc8#
- 2.Qh5#
- 1...Rxc2
- 2.Qh5#
- 1...Rxd6
- 2.Qh5#
- 1...Bxc2
- 2.Rc8#
- 1...Bxe5
- 2.Rc8#
- 1...Qa6
- 2.Qh5#
- 1...Qa7
- 2.Rc8#
- 1...Qa8
- 2.Qh5#
- 1...Rf1
- 2.Rc8#
- 2.Rd8#
- 1...Rg1
- 2.Rc8#
- 2.Rd8#
- 1...Rd5
- 2.Rc8#
- 1...Qa5!
- threat
- 1.Bd3?
- threat
- 2.Rd8#
- 2.Qh5#
- 1...Rxd3
- 2.Qh5#
- 1...Bxd3
- 2.Rd8#
- 1...Bxe5
- 2.Rd8#
- 1...Qa7
- 2.Rd8#
- 1...Qa8
- 2.Qh5#
- 1...Rc5
- 2.Rd8#
- 1...Rf1
- 2.Rd8#
- 1...Rg1
- 2.Rd8#
- 1...Qa5!
- threat
- 1.Rc2?
- threat
- 2.Bg6#
- 2.Qb5#
- 1...Qxb4
- 2.Bg6#
- 1...Rxc2
- 2.Bg6#
- 1...Rxd6
- 2.Bg6#
- 1...Bxc2
- 2.Qb5#
- 1...Bxe5
- 2.Bg6#
- 1...Qa5
- 2.Bg6#
- 1...Qa4
- 2.Bg6#
- 1...Qa6
- 2.Bg6#
- 1...Qa8
- 2.Bg6#
- 1...Rf1
- 2.Rd8#
- 2.Qb5#
- 1...Rg1
- 2.Rd8#
- 2.Qb5#
- 1...Rd5
- 2.Bg6#
- 1...Qa7!
- threat
- 1.Rd3?
- threat
- 2.Bg6#
- 2.Qb8#
- 1...Qxb4
- 2.Bg6#
- 1...Rxc6
- 2.Bg6#
- 1...Rxd3
- 2.Bg6#
- 1...Bxd3
- 2.Qb8#
- 1...Bxe5
- 2.Bg6#
- 1...Qa5
- 2.Bg6#
- 1...Qa6
- 2.Bg6#
- 1...Qa8
- 2.Bg6#
- 1...Rf1
- 2.Rd8#
- 2.Qb8#
- 1...Rg1
- 2.Rd8#
- 2.Qb8#
- 1...Qa7!
- threat
- 1.Rd4?
- threat
- 2.Qb8#
- 2.Qh8#
- 1...Rxc6
- 2.Qh8#
- 1...Rxd4
- 2.Qh8#
- 1...Bxd4
- 2.Qb8#
- 1...Qa7
- 2.Qh8#
- 1...Qa5
- 2.Qh8#
- 1...Qa6
- 2.Qh8#
- 1...Qa8
- 2.Qh8#
- 1...Rg1
- 2.Rd8#
- 2.Qb8#
- 1...Qxb4!
- threat
- 1.Qf6?
- threat
- 2.Qe7#
- 2.Qd8#
- 2.Qg6#
- 2.Qf7#
- 2.Qf8#
- 1...Rxd6
- 2.Qe7#
- 2.Qg6#
- 2.Qf7#
- 2.Qf8#
- 1...Bxf5
- 2.Qe7#
- 2.Qd8#
- 2.Qf7#
- 2.Qf8#
- 1...Qa5
- 2.Qe7#
- 2.Qg6#
- 2.Qf7#
- 2.Qf8#
- 1...Qa7
- 2.Qd8#
- 2.Qf8#
- 1...Qa8
- 2.Qe7#
- 2.Qg6#
- 2.Qf7#
- 2.Qf8#
- 1...Rg1
- 2.Rd8#
- 2.Qe7#
- 2.Qd8#
- 2.Qf7#
- 2.Qf8#
- 1...Bxf6!
- threat
- 1.Qg7?
- threat
- 2.Qf8#
- 2.Qg6#
- 2.Qd7#
- 2.Qe7#
- 2.Qf7#
- 2.Qg8#
- 1...Rxd6
- 2.Qf8#
- 2.Qg6#
- 2.Qe7#
- 2.Qf7#
- 2.Qg8#
- 1...Bxf5
- 2.Qf8#
- 2.Qd7#
- 2.Qe7#
- 2.Qf7#
- 2.Qg8#
- 1...Qa7
- 2.Qf8#
- 2.Qg8#
- 1...Rg1
- 2.Rd8#
- 2.Qf8#
- 2.Qd7#
- 2.Qe7#
- 2.Qf7#
- 1...Bf6
- 2.Sxf6#
- 2.Qf8#
- 2.Qd7#
- 2.Qf7#
- 1...Bxg7+!
- threat
- 1.Bxb1?
- Keys
- 1.Rc3!
- threat
- 2.Qh8#
- 2.Qb5#
- 1...Qxb4
- 2.Qh8#
- 1...Rxc3
- 2.Qh8#
- 1...Rxd6
- 2.Qh8#
- 1...Bxc3
- 2.Qb5#
- 1...Qa7
- 2.Qh8#
- 1...Qa4
- 2.Qh8#
- 1...Qa5
- 2.Qh8#
- 1...Qa6
- 2.Qh8#
- 1...Qa8
- 2.Qh8#
- 1...Rg1
- 2.Rd8#
- 2.Qb5#
- 1...Rd5
- 2.Qh8#
- 1...Bd3
- 2.Rd8#
- 2.Qh8#
- 1...Be4
- 2.Qh8#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 11
- Sets
- R(b);S_CUTB(a)::B(D)
- R(b);S_CUTB(d)::QAR(C)
- R(c);N_GUARD::R1(F)
- R(c);N_GUARD,P_PINB(B)::R1(F)
- R(c);S_CUTB(a)::B(D)
- R(c);S_CUTB(d)::QAR(C)
- B(a);N_GUARD::B(D)
- B(a);S_CUTR(b)::R(E)
- B(a);S_CUTR(c)::R1(F)
- B(d);S_CUTR(b)::R(E)
- B(d);S_CUTR(c)::R1(F)
- Tries
- Try
- B(D);XB(a)
- Threat
- DUALS(2)
- Vars
- B(d);XQ(C)::B(D)
- Q(e);::B(D)
- R(b);::QAB(C)
- R(b);::B(D)
- R(c);N_GUARD::R1(F)
- R(c);::QAB(C)
- R(c);::B(D)
- Refutation
- Q(e);
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(b);XB(D)::QAB(C)
- R(c);P_PINP(G),XR(F)::QAB(C)
- B(a);XB(D)::R(E)
- B(d);XQ(C)::R(E)
- Q(e);::QAB(C)
- Q(e);::R(E)
- R(c);::R(E)
- Refutation
- Q(e);
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(c);XB(D)::QAB(C)
- B(a);XB(D)::R1(F)
- B(d);XQ(C)::R1(F)
- Q(e);::R1(F)
- Q(e);::QAB(C)
- R(b);::R1(F)
- R(c);::R1(F)
- Refutation
- Q(e);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(A)::B(D)
- R(b);XR(E)::B(D)
- R(c);P_PINP(G),XR(F)::B(D)
- B(a);XR(E)::QAB(C)
- B(d);XQ(C)::B(D)
- Q(e);::B(D)
- R(c);::B(D)
- Refutation
- Q(e);
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(A)::B(D)
- R(b);P_PINP(G),XR(E)::B(D)
- R(c);XR(F)::B(D)
- B(a);XR(F)::QAR(C)
- B(d);XQ(C)::B(D)
- Q(e);::B(D)
- Refutation
- Q(e);
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(b);P_PINP(G),XR(E)::QAR(C)
- R(c);XR(F)::QAR(C)
- B(d);XR(F)::QAR(C)
- Q(e);::QAR(C)
- Refutation
- Q(e);XP(A)
- Try
- Q(C);
- Threat
- DUALS(5)
- Refutation
- B(d);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(6)
- Refutation
- B(d);CHECK,XQ(C)
- Try
- Actual
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(A)::QAR(C)
- R(b);XR(E)::QAR(C)
- R(c);P_PINP(G),XR(F)::QAR(C)
- B(d);XR(E)::QAB(C)
- Q(e);::QAR(C)
- R(c);::QAR(C)
- B(a);::QAR(C)
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