MESON Chess Problem Database
Problem Display
PID: 172085 (n5b1/1K1N2bB/2R5/1N1k4/4r1pQ/3p4/7P/8 w - - 0 1)
Apro, Laszlo
British Chess Magazine, 1978
#2
7 + 7
| 6490 | yacpdb | 2018 |
| 5454 | Near Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Rd6#
- 1...Rd4
- 2.Sc3#
- 1...Re6
- 2.Rc5#
- 1...Be5
- 2.Bxg8#
- 1...Be6
- 2.Rc5#
- 1...g3
- 2.Bxe4#
- 2.Qxe4#
- 1...Rc4
- Tries
- 1.Sb6+?
- 1...Ke5
- 2.Qg5#
- 1...Sxb6!
- 1...Ke5
- 1.Sf6+?
- 1...Ke5
- 2.Qg5#
- 1...Bxf6!
- 1...Ke5
- 1.Qg3?
- threat
- 2.Qd6#
- 1...Re5
- 2.Qxd3#
- 1...Re6
- 2.Rc5#
- 1...Be5
- 2.Bxg8#
- 1...Bf8
- 2.Sf6#
- 1...Rf4!
- threat
- 1.Qg5+?
- 1...Be5
- 2.Sf6#
- 2.Bxg8#
- 2.Qxg8#
- 1...Re5!
- 1...Be5
- 1.Qf6?
- threat
- 2.Sc3#
- 2.Rc5#
- 2.Qd6#
- 1...Rb4
- 2.Rc5#
- 2.Qd6#
- 1...Rc4
- 2.Rd6#
- 2.Qd6#
- 1...Re5
- 2.Rc5#
- 2.Qd6#
- 1...Re6
- 2.Sc3#
- 2.Rc5#
- 1...Bf8
- 2.Sc3#
- 1...Be6
- 2.Sc3#
- 2.Rc5#
- 1...Bxf6!
- threat
- 1.Qe7?
- threat
- 2.Bxe4#
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 2.Qxe4#
- 1...Bxh7
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Re1
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Re2
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Re3
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Ra4
- 2.Bxg8#
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Rb4
- 2.Bxg8#
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Rc4
- 2.Bxg8#
- 2.Rd6#
- 2.Qd6#
- 1...Rd4
- 2.Sc3#
- 2.Bxg8#
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Rf4
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Re5
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Re6
- 2.Rc5#
- 2.Qc5#
- 1...Bd4
- 2.Bxe4#
- 2.Qd6#
- 2.Qxe4#
- 1...Be5
- 2.Bxg8#
- 2.Rc5#
- 2.Qc5#
- 1...Bf8
- 2.Sf6#
- 2.Bxe4#
- 2.Rc5#
- 2.Qxe4#
- 1...Be6
- 2.Rc5#
- 2.Qc5#
- 2.Qd6#
- 1...Rxe7!
- threat
- 1.Qxg4?
- threat
- 2.Bxe4#
- 2.Rc5#
- 2.Qxe4#
- 1...Bxh7
- 2.Rc5#
- 1...Re1
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 1...Re2
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 1...Re3
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 1...Ra4
- 2.Bxg8#
- 2.Rc5#
- 2.Rd6#
- 1...Rb4
- 2.Bxg8#
- 2.Rc5#
- 2.Rd6#
- 1...Rc4
- 2.Bxg8#
- 2.Rd6#
- 2.Qxc4#
- 1...Rd4
- 2.Sc3#
- 2.Bxg8#
- 2.Rc5#
- 1...Rf4
- 2.Rc5#
- 1...Re5
- 2.Sc3#
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 2.Qd4#
- 1...Re6
- 2.Rc5#
- 2.Qc4#
- 1...Re7
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 1...Re8
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 1...Bd4
- 2.Bxe4#
- 2.Qxe4#
- 1...Bf8
- 2.Bxe4#
- 2.Qxe4#
- 1...Rxg4!
- threat
- 1.Qh5+?
- 1...Be5
- 2.Sf6#
- 2.Bxg8#
- 1...Re5!
- 1...Be5
- 1.Sb6+?
- Keys
- 1.Qf2!
- threat
- 2.Qc5#
- 1...Re3
- 2.Qa2#
- 1...Rc4
- 2.Rd6#
- 1...Rd4
- 2.Sc3#
- 1...Bd4
- 2.Qa2#
- 1...Bf8
- 2.Sc3#
- threat
- 1.Qf2!
Anticipated by 10466(1964)
This anticipates 272019(1985)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(b);SBLOCK::R1(D)
- R(b);SBLOCK,S_CUTB(e)::S(C)
- B(e);S_CUTR(b)::B(G),XB(g)
- B(g);SBLOCK::R1(D)
- Tries
- Try
- S(F);CHECK
- Vars
- K(d);P-FLIGHT::QAR2(B)
- Refutation
- S(f);XS(F)
- Try
- S(F);CHECK
- Vars
- K(d);P-FLIGHT::QAR2(B)
- Refutation
- B(e);XS(F)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(b);N_GUARD,S_CUTB(e)::QAR2(B),XP(a)
- R(b);SBLOCK::R1(D)
- B(e);S_CUTR(b)::B(G),XB(g)
- B(e);N_GUARD::S(F)
- Refutation
- R(b);
- Try
- Q(B);CHECK
- Refutation
- R(b);P_SPINR(b)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- B(e);::S(C)
- Refutation
- B(e);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(5)
- Refutation
- R(b);P_PINS(F),XQ(B)
- Try
- Q(B);XP(c)
- Threat
- DUALS(3)
- Vars
- B(g);XB(G)::R1(D)
- R(b);::R1(D)
- Refutation
- R(b);XQ(B)
- Try
- Q(B);CHECK
- Refutation
- R(b);P_SPINR(b)
- Try
- Actual
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(b);N_GUARD::QAB(B)
- R(b);SBLOCK::R1(D)
- R(b);S_CUTB(e)::S(C)
- B(e);S_CUTR(b)::QAB(B)
- B(e);N_GUARD::S(C)
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