MESON Chess Problem Database
Problem Display
PID: 4570 (6b1/r7/3B4/2N2p2/1p1k4/4N3/2PKP3/6Q1 w - - 0 1)
Shinkman, William Anthony
Detroit Free Press, 1880
#2
7 + 5
| 3925 | The Golden Argosy | 1929 |
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxa1#
- 2.Qg7#
- 1...Ra2
- 2.Qg7#
- 1...Ra3
- 2.Qg7#
- 1...Ra4
- 2.Qg7#
- 1...Ra5
- 2.Qg7#
- 1...Ra6
- 2.Qg7#
- 1...Rb7
- 2.Qa1#
- 1...Rc7
- 2.Qa1#
- 1...Rd7
- 2.Qa1#
- 1...Re7
- 2.Qa1#
- 1...Rf7
- 2.Qa1#
- 1...Rg7
- 2.Qa1#
- 2.Qxg7#
- 1...Rh7
- 2.Qa1#
- 1...Ra8
- 2.Qg7#
- 1...Ba2
- 2.Qa1#
- 1...Bf7
- 2.Qg7#
- 1...b3
- 2.c3#
- 1...Ra1
- Tries
- 1.Sb3+?
- 1...Ke4
- 2.Qh1#
- 2.Qg2#
- 1...Bxb3!
- 1...Ke4
- 1.Se6+?
- 1...Ke4
- 2.Qh1#
- 2.Qg2#
- 1...Bxe6!
- 1...Ke4
- 1.Qh2?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Bd5
- 2.Qe5#
- 1...f4
- 2.Qxf4#
- 1...Re7!
- threat
- 1.Qf1?
- threat
- 2.Qf4#
- 1...Re7
- 2.Qa1#
- 1...f4
- 2.Qxf4#
- 1...Bd5!
- threat
- 1.Qg3?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Bd5
- 2.Qe5#
- 1...f4
- 2.Qxf4#
- 1...Re7!
- threat
- 1.Qg4+?
- 1...f4
- 2.Qxf4#
- 1...fxg4!
- 1...f4
- 1.Qg5?
- threat
- 2.Qf4#
- 2.Qf6#
- 1...Rf7
- 2.Qf4#
- 1...Bd5
- 2.Qf6#
- 1...f4
- 2.Qxf4#
- 2.Qf6#
- 2.Qe5#
- 1...Re7!
- threat
- 1.Qxg8?
- threat
- 2.Sxf5#
- 2.Qc4#
- 2.Qd5#
- 1...f4
- 2.Sf5#
- 2.Qc4#
- 2.Qd5#
- 1...Rf7!
- threat
- 1.Sb3+?
- Keys
- 1.Qh1!
- 1...Ra2
- 2.Qh8#
- 1...Ra1
- 2.Qxa1#
- 2.Qh8#
- 1...Ra3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Ra5
- 2.Qh8#
- 1...Ra6
- 2.Qh8#
- 1...Rb7
- 2.Qa1#
- 1...Rc7
- 2.Qa1#
- 1...Rd7
- 2.Qa1#
- 1...Re7
- 2.Qa1#
- 1...Rf7
- 2.Sb3#
- 2.Se6#
- 2.Qd5#
- 2.Qa1#
- 1...Rg7
- 2.Qa1#
- 1...Rh7
- 2.Qa1#
- 1...Ra8
- 2.Qh8#
- 1...Ba2
- 2.Qa1#
- 1...Bb3
- 2.Sxb3#
- 1...Bc4
- 2.Sxf5#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Sxe6#
- 1...Bf7
- 2.Qh8#
- 1...Bh7
- 2.Sb3#
- 2.Se6#
- 2.Qd5#
- 1...b3
- 2.c3#
- 1...f4
- 2.Qe4#
- 1...Ra2
- 1.Qh1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- R(d);N_GUARD,P_PINP(B)::QAB(A)
- R(d);N_GUARD::QAB(A)
- B(e);S_CUTR(d)::QAB(A)
- P(a);N_GUARD::P(B)
- Tries
- Try
- S(F);CHECK
- Refutation
- B(e);XS(F)
- Try
- S(F);CHECK
- Refutation
- B(e);XS(F)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(e);::QAB1(A)
- P(c);::QAR2(A),XP(c)
- Refutation
- R(d);
- Try
- Q(A);
- Threat
- QAR2(A)
- Vars
- R(d);N_GUARD::QAB(A)
- P(c);::QAR2(A),XP(c)
- Refutation
- B(e);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(e);::QAB1(A)
- P(c);::QAR2(A),XP(c)
- Refutation
- R(d);
- Try
- Q(A);CHECK
- Vars
- P(c);P_SPINP(c)::QAR2(A),XP(c)
- Refutation
- P(c);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(d);::QAR2(A)
- B(e);::QAB(A)
- Refutation
- R(d);
- Try
- Q(A);XB(e)
- Threat
- DUALS(3)
- Refutation
- R(d);
- Try
- Actual
- Q(A);
- Vars
- R(d);N_GUARD,P_PINP(B)::QAB(A)
- R(d);N_GUARD::QAB(A)
- B(e);S_CUTR(d)::QAB(A)
- B(e);N_GUARD::S(F),XB(e)
- B(e);SBLOCK::S(E),XP(c)
- B(e);N_GUARD::QAR1(A),XB(e)
- P(a);N_GUARD::P(B)
- P(c);N_GUARD::QAR1(A)
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