MESON Chess Problem Database
Problem Display
PID: 164025 (Q4R2/2K1N3/3Pp1B1/2B1k3/5p2/p2p3r/3n1N2/6r1 w - - 0 1)
von Alvensleben, Wichard Udo Reinhard
stern, 1997
(First published on Thu Jan 16 1997)
#2
8 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sg4#
- 1...Rb1
- 2.Sg4#
- 1...Rc1
- 2.Sg4#
- 1...Rd1
- 2.Sg4#
- 1...Re1
- 2.Sg4#
- 1...Rf1
- 2.Sg4#
- 1...Rgh1
- 2.Sg4#
- 1...Rg4
- 2.Sxg4#
- 1...Rxg6
- 2.Sxg6#
- 1...Rhh1
- 2.Sxd3#
- 1...Rh2
- 2.Sxd3#
- 1...Rh4
- 2.Sxd3#
- 1...Rh5
- 2.Sxd3#
- 1...Rh6
- 2.Sxd3#
- 1...Rh7
- 2.Sxd3#
- 1...Rh8
- 2.Sxd3#
- 1...Sb1
- 2.Qe4#
- 1...Sf1
- 2.Qe4#
- 1...Sb3
- 2.Qe4#
- 1...Sf3
- 2.Sxd3#
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...f3
- 2.Sxd3#
- 1...Ra1
- Tries
- 1.Bb6?
- threat
- 2.Qa5#
- 1...Rb1
- 2.Sg4#
- 1...Sb3
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Rc1+!
- threat
- 1.Be4?
- threat
- 2.Sc6#
- 1...Sxe4
- 2.Qxe4#
- 1...Rh7
- 2.Sxd3#
- 1...Rg7!
- threat
- 1.Qg2?
- threat
- 2.Sg4#
- 2.Sc6#
- 1...Rf3
- 2.Sg4#
- 1...Rg3
- 2.Sc6#
- 1...Rh4
- 2.Sxd3#
- 2.Sc6#
- 1...Rh7
- 2.Sxd3#
- 2.Sg4#
- 1...Sf3
- 2.Sxd3#
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 2.Qxe4#
- 1...f3
- 2.Sxd3#
- 2.Sg4#
- 1...Rxg2!
- threat
- 1.Qf3?
- threat
- 2.Sxd3#
- 2.Sc6#
- 2.Qxf4#
- 1...Sxf3
- 2.Sxd3#
- 1...Rg4
- 2.Sxd3#
- 2.Sxg4#
- 2.Sc6#
- 1...Rh4
- 2.Sxd3#
- 2.Sc6#
- 1...Rh7
- 2.Sxd3#
- 2.Qxf4#
- 1...Se4
- 2.Sxd3#
- 2.Qxe4#
- 2.Qxf4#
- 1...Rxf3!
- threat
- 1.Qa4?
- threat
- 2.Bd4#
- 2.Qd4#
- 2.Qxf4#
- 1...Rc1
- 2.Sg4#
- 2.Qd4#
- 2.Qxf4#
- 1...Rg4
- 2.Sxg4#
- 2.Bd4#
- 2.Qd4#
- 1...Rf3
- 2.Bd4#
- 2.Qd4#
- 1...Rh4
- 2.Sxd3#
- 2.Bd4#
- 2.Qd4#
- 1...Sb3
- 2.Qe4#
- 2.Qxf4#
- 1...Sf3
- 2.Sxd3#
- 2.Qe4#
- 2.Qxf4#
- 1...Se4
- 2.Bd4#
- 2.Qd4#
- 2.Qxe4#
- 1...f3
- 2.Sxd3#
- 2.Bd4#
- 2.Qd4#
- 2.Qf4#
- 1...Sc4!
- threat
- 1.Qa7?
- threat
- 2.Bd4#
- 1...Rc1
- 2.Sg4#
- 1...Sf3
- 2.Sxd3#
- 1...Sb3!
- threat
- 1.Bb6?
- Keys
- 1.Qh1!
- threat
- 2.Sc6#
- 1...Rgxh1
- 2.Sg4#
- 1...Rhxh1
- 2.Sxd3#
- 1...Rg2
- 2.Qa1#
- 1...Rf3
- 2.Qh8#
- 1...Rh7
- 2.Sxd3#
- 1...Sf3
- 2.Sxd3#
- 1...Se4
- 2.Qxe4#
- 1...f3
- 2.Sxd3#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 17
- Sets
- R(a);N_GUARD::S(A)
- R(a);N_GUARD,P_PINB(B)::S(A)
- R(a);N_GUARD::S(A),XR(a)
- R(a);XB(D)::S(F),XR(a)
- R(e);N_GUARD::S(A),XP(d)
- R(e);N_GUARD,P_PINS(F)::S(A),XP(d)
- S(b);N_GUARD::QAR1(G)
- S(b);N_GUARD::QAR1(G),XS(b)
- P(f);S_CUTR(e)::S(A),XP(d)
- Tries
- Try
- B(B);
- Threat
- QAR(G)
- Vars
- R(a);N_GUARD::S(A)
- S(b);N_GUARD::QAR1(G)
- S(b);N_GUARD::QAR1(G),XS(b)
- Refutation
- R(a);CHECK
- Try
- B(D);
- Threat
- S(F)
- Vars
- S(b);OGATE,XB(D)::QAR1(G),XS(b)
- R(e);N_GUARD,P_PINS(F)::S(A),XP(d)
- Refutation
- R(a);P_PINS(F)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(e);::S(A)
- R(e);::S(F)
- Refutation
- R(a);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- S(b);XQ(G)::S(A),XP(d)
- Refutation
- R(e);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(3)
- Refutation
- S(b);
- Try
- Q(G);
- Threat
- B(B)
- Vars
- R(a);N_GUARD,P_PINB(B)::S(A)
- S(b);S_CUTR(e)::S(A),XP(d)
- Refutation
- S(b);
- Try
- Actual
- Q(G);
- Threat
- S(F)
- Vars
- R(a);N_GUARD,XQ(G)::S(A)
- R(e);N_GUARD,XQ(G)::S(A),XP(d)
- R(a);OGATE::QAB(G)
- R(e);OGATE::QAB(G)
- R(e);N_GUARD,P_PINS(F)::S(A),XP(d)
- S(b);S_CUTR(e)::S(A),XP(d)
- S(b);N_GUARD::QAR1(G),XS(b)
- P(f);S_CUTR(e)::S(A),XP(d)
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