MESON Chess Problem Database
Problem Display
PID: 197865 (4B1K1/p2Pp1Bp/2rbk3/q6R/3Rrp2/3N4/8/1Q6 w - - 0 1)
Chernikh, Vassily
Zadachi i Etyudi, 1997
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.d8S#
- 1...Qd2
- 2.d8S#
- 1...Qc3
- 2.d8S#
- 1...Qb4
- 2.d8S#
- 1...Qa1
- 2.d8S#
- 1...Qa2
- 2.d8S#
- 1...Qa3
- 2.d8S#
- 1...Qa4
- 2.d8S#
- 1...Qb5
- 2.d8S#
- 1...Qc5
- 2.d8S#
- 1...Qd5
- 2.d8S#
- 1...Qe5
- 2.d8S#
- 1...Qf5
- 2.d8S#
- 1...Qa6
- 2.d8S#
- 1...Re5
- 2.Sxf4#
- 1...Rb6
- 2.d8S#
- 1...Rc7
- 2.d8S#
- 1...Rc8
- 2.dxc8Q#
- 2.dxc8B#
- 1...Ba3
- 2.Bf7#
- 1...Bb4
- 2.Bf7#
- 1...Bc5
- 2.Bf7#
- 2.Qb3#
- 1...Be5
- 2.Bf7#
- 1...Bc7
- 2.Bf7#
- 1...Bb8
- 2.Bf7#
- 1...Qe1
- Tries
- 1.Sxf4+?
- 1...Bxf4
- 2.Bf7#
- 1...Rxf4!
- 1...Bxf4
- 1.Sc5+?
- 1...Qxc5
- 2.d8S#
- 1...Bxc5
- 2.Bf7#
- 2.Qxe4#
- 2.Qb3#
- 1...Rxc5!
- 1...Qxc5
- 1.Se5?
- threat
- 2.Bf7#
- 1...Qxe5
- 2.d8S#
- 1...Rxe5
- 2.Rh6#
- 1...Rc8
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qd8!
- threat
- 1.Rxe4+?
- 1...Qe5
- 2.Sxf4#
- 1...Be5!
- 1...Qe5
- 1.Qa2+?
- 1...Qxa2
- 2.d8S#
- 1...Qd5
- 2.Qxd5#
- 2.d8S#
- 1...Rc4!
- 1...Qxa2
- 1.Qb3+?
- 1...Qd5
- 2.Qxd5#
- 2.d8S#
- 1...Rc4!
- 1...Qd5
- 1.d8Q?
- threat
- 2.Bd7#
- 2.Bf7#
- 2.Qd7#
- 1...Qxh5
- 2.Bd7#
- 2.Qd7#
- 1...Qg5
- 2.Bd7#
- 2.Qd7#
- 1...Qc7
- 2.Bf7#
- 1...Qf5
- 2.Bd7#
- 2.Qd7#
- 1...Rc7
- 2.Bf7#
- 1...Qxd8!
- threat
- 1.d8R?
- threat
- 2.Bd7#
- 2.Bf7#
- 1...Qxh5
- 2.Bd7#
- 1...Qg5
- 2.Bd7#
- 1...Qc7
- 2.Bf7#
- 1...Qf5
- 2.Bd7#
- 1...Rc7
- 2.Bf7#
- 1...Qxd8!
- threat
- 1.Sxf4+?
- Keys
- 1.Qb5!
- threat
- 2.Rh6#
- 1...Qxb5
- 2.d8S#
- 1...Re5
- 2.Sxf4#
- 1...Rc5
- 2.Bf7#
- 1...Bc5
- 2.Bf7#
- 2.Qc4#
- 2.Qb3#
- 1...Be5
- 2.Bf7#
- 1...h6
- 2.Rxh6#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 19
- Sets
- Q(c);N_GUARD::P=S
- R(a);N_GUARD,S_CUTB(e)::S(B),XP(b)
- R(d);S_CUTQ(c)::P=S
- R(d);OGATE,P_PINB(G)::PXR(d)=Q
- B(e);::B(G)
- Tries
- Try
- S(B);CHECK,XP(b)
- Vars
- B(e);XS(B)::B(G)
- Refutation
- R(a);XS(B)
- Try
- S(B);CHECK
- Vars
- Q(c);N_GUARD,S_CUTB(e),S_CUTR(d),XS(B)::P=S
- Refutation
- R(d);XS(B)
- Try
- S(B);
- Threat
- B(G)
- Vars
- Q(c);N_GUARD,XS(B)::P=S
- R(a);XS(B)::R(D)
- R(d);OGATE,P_PINB(G)::PXR(d)=Q
- Refutation
- Q(c);P_PINB(G)
- Try
- R(C);CHECK,XR(a)
- Vars
- Q(c);P_SPINQ(c)::S(B),XP(b)
- Refutation
- B(e);P_SPINB(e)
- Try
- Q(A);CHECK
- Vars
- Q(c);N_GUARD,S_CUTR(d),XQ(A)::P=S
- Refutation
- R(d);P_SPINR(d)
- Try
- Q(A);CHECK
- Refutation
- R(d);P_SPINR(d)
- Try
- P(E);
- Threat
- DUALS(3)
- Vars
- Q(c);::B(G)
- R(d);::B(G)
- Refutation
- Q(c);P_PINB(G),XQ(E)
- Try
- P(E);
- Threat
- DUALS(2)
- Vars
- Q(c);XR(D)::B(G)
- Q(c);P_PINB(F)::B(G)
- Q(c);::B(G)
- R(d);::B(G)
- Refutation
- Q(c);P_PINB(G),XR(E)
- Try
- Actual
- Q(A);
- Threat
- R(D)
- Vars
- Q(c);N_GUARD,XQ(A)::P=S
- R(a);N_GUARD,S_CUTB(e)::S(B),XP(b)
- R(d);::B(G)
- B(e);::B(G)
- P(i);::R(D),XP(i)
Developed and maintained by Brian Stephenson.
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