MESON Chess Problem Database
Problem Display
PID: 202400 (r2q4/1P6/R7/P5p1/8/3p1Q2/2RNPB2/k5K1 w - - 0 1)
Speiser, Jacob Kopel
Teplitz-Schonauer Anzeiger, 1923
#2
9 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxa5
- 2.Bd4#
- 2.Qf6#
- 1...Qf6
- 2.Qxf6#
- 1...Qe7
- 2.Bd4#
- 1...Qd4
- 2.Bxd4#
- 1...Qb8
- 2.Bd4#
- 1...Qe8
- 2.Bd4#
- 1...Qf8
- 2.Bd4#
- 1...Qg8
- 2.Bd4#
- 2.Qf6#
- 1...dxc2
- 2.Qa3#
- 1...dxe2
- 2.Qa3#
- 2.Qc3#
- 1...Qxa5
- Tries
- 1.Bc5?
- threat
- 2.Qf1#
- 1...Qd4+
- 2.Bxd4#
- 1...dxc2
- 2.Qa3#
- 1...dxe2
- 2.Qa3#
- 2.Qc3#
- 1...Qf6
- 2.Qxf6#
- 1...Qf8
- 2.Bd4#
- 1...Qb6!
- threat
- 1.Bb6?
- threat
- 2.Qf1#
- 1...Qd4+
- 2.Bxd4#
- 1...dxc2
- 2.Qa3#
- 1...dxe2
- 2.Qa3#
- 2.Qc3#
- 1...Qf6
- 2.Qxf6#
- 1...Qf8
- 2.Bd4#
- 1...Qxb6+!
- threat
- 1.Rb6?
- threat
- 2.Rb1#
- 1...dxc2
- 2.Qa3#
- 1...Qxb6!
- threat
- 1.Qd5?
- threat
- 2.Bd4#
- 2.Ra2#
- 2.Qa2#
- 1...Qxa5
- 2.Bd4#
- 2.Qd4#
- 2.Qxa5#
- 2.Qe5#
- 1...dxc2
- 2.Bd4#
- 1...Qb6
- 2.Ra2#
- 2.Qa2#
- 1...Qf6
- 2.Ra2#
- 2.Qa2#
- 1...Qc7
- 2.Ra2#
- 2.Qa2#
- 1...Qc8
- 2.Ra2#
- 2.Qa2#
- 1...Qg8
- 2.Bd4#
- 2.Ra2#
- 2.Qd4#
- 2.Qe5#
- 1...Qh8
- 2.Ra2#
- 2.Qa2#
- 1...Rc8
- 2.Ra2#
- 2.Qa2#
- 1...Qxd5!
- threat
- 1.Qc6?
- threat
- 2.Qa4#
- 2.Qc3#
- 1...Qxa5
- 2.Bd4#
- 2.Qc3#
- 2.Qf6#
- 1...Qb6
- 2.Qa4#
- 1...Qf6
- 2.Qa4#
- 2.Qxf6#
- 1...Qc7
- 2.Bd4#
- 2.Qa4#
- 1...Qe7
- 2.Bd4#
- 2.Qc3#
- 1...Qd4
- 2.Bxd4#
- 1...Qd5
- 2.Qc3#
- 1...Qd6
- 2.Qc3#
- 1...Qd7
- 2.Qc3#
- 1...Qc8
- 2.Bd4#
- 2.Qa4#
- 1...Qe8
- 2.Bd4#
- 2.Qc3#
- 1...Qf8
- 2.Bd4#
- 2.Qc3#
- 1...Qg8
- 2.Bd4#
- 2.Qc3#
- 2.Qf6#
- 1...Qh8
- 2.Qa4#
- 1...Rc8
- 2.Qa4#
- 1...dxc2!
- threat
- 1.Qxd3?
- threat
- 2.Qa3#
- 2.Qc3#
- 1...Qxa5
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 1...Qb6
- 2.Qa3#
- 1...Qf6
- 2.Qa3#
- 1...Qc7
- 2.Qa3#
- 1...Qe7
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 1...Qd4
- 2.Bxd4#
- 2.Qa3#
- 2.Qxd4#
- 1...Qd5
- 2.Qc3#
- 1...Qd6
- 2.Qc3#
- 1...Qc8
- 2.Qa3#
- 1...Qf8
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 1...Qg8
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 1...Qh8
- 2.Qa3#
- 1...Rc8
- 2.Qa3#
- 1...Qxd3!
- threat
- 1.Qh3?
- threat
- 2.Qf1#
- 1...dxc2
- 2.Qa3#
- 1...dxe2
- 2.Qa3#
- 2.Qc3#
- 1...Qb6!
- threat
- 1.Qf6+?
- 1...Qd4
- 2.Bxd4#
- 2.Qxd4#
- 1...Qxf6!
- 1...Qd4
- 1.e4?
- threat
- 2.Qd1#
- 1...dxc2
- 2.Qa3#
- 1...Qb6!
- threat
- 1.Bc5?
- Keys
- 1.Ba7!
- threat
- 2.Qf1#
- 1...Qb6+
- 2.axb6#
- 1...Qd4+
- 2.Bxd4#
- 1...dxc2
- 2.Qa3#
- 1...dxe2
- 2.Qa3#
- 2.Qc3#
- 1...Qf6
- 2.Qxf6#
- 1...Qf8
- 2.Bd4#
- threat
- 1.Ba7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(e);N_GUARD::QAB(F),XQ(e)
- Q(e);N_GUARD::B(E)
- Q(e);N_GUARD,P_PINB(E)::B(E),XQ(e)
- P(b);OGATE,XR(B)::QAR2(F)
- Tries
- Try
- B(E);
- Threat
- QAR(F)
- Vars
- Q(e);CHECK,N_GUARD::B(E),XQ(e)
- P(b);OGATE,XR(B)::QAR2(F)
- Q(e);N_GUARD::QAB(F),XQ(e)
- Q(e);N_GUARD::B(E)
- Refutation
- Q(e);P_PINB(E)
- Try
- B(E);
- Threat
- QAR(F)
- Vars
- Q(e);CHECK,N_GUARD::B(E),XQ(e)
- P(b);OGATE,XR(B)::QAR2(F)
- Q(e);N_GUARD::QAB(F),XQ(e)
- Q(e);N_GUARD::B(E)
- Refutation
- Q(e);CHECK,XB(E)
- Try
- R(H);
- Threat
- R1(H)
- Vars
- P(b);OGATE,XR(B)::QAR2(F)
- Refutation
- Q(e);P_PINB(E),XR(H)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- P(b);XR(B)::B(E)
- Refutation
- Q(e);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(e);P_PINB(E)::QAR(F)
- Q(e);N_GUARD,P_PINB(E)::B(E),XQ(e)
- Q(e);::QAB(F)
- Q(e);::QAR(F)
- R(d);::QAR(F)
- Refutation
- P(b);XR(B)
- Try
- Q(F);XP(b)
- Threat
- DUALS(2)
- Vars
- Q(e);P_PINB(E)::QAR2(F)
- Q(e);::QAR2(F)
- Q(e);::QAB(F)
- R(d);::QAR2(F)
- Refutation
- Q(e);XQ(F)
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- P(b);OGATE,XR(B)::QAR2(F)
- Refutation
- Q(e);P_PINB(E)
- Try
- Q(F);CHECK
- Refutation
- Q(e);XQ(F)
- Try
- P(D);
- Threat
- QAR(F)
- Vars
- P(b);OGATE,XR(B)::QAR2(F)
- Refutation
- Q(e);P_PINB(E)
- Try
- Actual
- B(E);
- Threat
- QAR(F)
- Vars
- Q(e);CHECK,OGATE::R(H)+P(G),XQ(e)
- Q(e);CHECK,N_GUARD::B(E),XQ(e)
- P(b);OGATE,XR(B)::QAR2(F)
- Q(e);N_GUARD::QAB(F),XQ(e)
- Q(e);N_GUARD::B(E)
Developed and maintained by Brian Stephenson.
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