MESON Chess Problem Database
Problem Display
PID: 7963 (8/3p4/n2B2N1/3NRP2/2pkp3/2pppP2/1q2b3/1B1RQ1K1 w - - 0 1)
Kopaev, Viacheslav Georgievich
Rychkov, Vladimir Nikolaevich
Uralski Problemist, 1994
#2
10 + 10
| 5559 | ECSC | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qxb1
- 2.Qxc3#
- 1...Qa2
- 2.Qxc3#
- 1...Qb5
- 2.Qxc3#
- 1...Qb6
- 2.Qxc3#
- 1...Qb7
- 2.Qxc3#
- 1...Qb8
- 2.Qxc3#
- 1...Bxd1
- 2.Qxe3#
- 1...Bf1
- 2.Qxe3#
- 1...Bxf3
- 2.Qxe3#
- 1...exf3
- 2.Qh4#
- 1...Qxb1
- Tries
- 1.Sxc3?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Bxf3
- 2.Rd5#
- 1...exf3
- 2.Re4#
- 2.Rd5#
- 1...Qd2
- 2.Sb5#
- 1...d2
- 2.Sxe2#
- 1...Qb5
- 2.Sxe2#
- 2.Sxb5#
- 2.Rxe4#
- 1...Qb7
- 2.Sxe2#
- 1...Sb4
- 2.Sb5#
- 2.Bc5#
- 2.Rxe4#
- 1...Sc5
- 2.Bxc5#
- 2.Rd5#
- 1...Sc7
- 2.Bc5#
- 2.Rxe4#
- 1...Qxc3!
- threat
- 1.Sb4?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Bxf3
- 2.Rd5#
- 1...Sxb4
- 2.Bc5#
- 1...exf3
- 2.Qh4#
- 1...Sc5
- 2.Bxc5#
- 2.Rd5#
- 1...Sc7
- 2.Bc5#
- 2.Rxe4#
- 1...Qxb4!
- threat
- 1.Sdf4?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Bxf3
- 2.Rd5#
- 1...Qb5
- 2.Sxe2#
- 2.Rxe4#
- 1...Qb7
- 2.Sxe2#
- 1...Sb4
- 2.Bc5#
- 2.Rxe4#
- 1...Sc5
- 2.Bxc5#
- 2.Rd5#
- 1...Sc7
- 2.Bc5#
- 2.Rxe4#
- 1...exf3!
- threat
- 1.Sb6?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Bxf3
- 2.Rd5#
- 1...exf3
- 2.Qh4#
- 1...Qb5
- 2.Rxe4#
- 1...Sb4
- 2.Bc5#
- 2.Rxe4#
- 1...Sc5
- 2.Bxc5#
- 2.Rd5#
- 1...Sc7
- 2.Bc5#
- 2.Rxe4#
- 1...Qxb6!
- threat
- 1.Sf6?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Bxf3
- 2.Rd5#
- 1...exf3
- 2.Re4#
- 2.Rd5#
- 2.Qh4#
- 1...Qb5
- 2.Rxe4#
- 1...Sb4
- 2.Bc5#
- 2.Rxe4#
- 1...Sc5
- 2.Bxc5#
- 2.Rd5#
- 1...Sc7
- 2.Bc5#
- 2.Rxe4#
- 1...Qb7!
- threat
- 1.Sc7?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Bxf3
- 2.Rd5#
- 1...Sxc7
- 2.Bc5#
- 1...exf3
- 2.Qh4#
- 1...Qb5
- 2.Sxb5#
- 2.Rxe4#
- 1...Sb4
- 2.Sb5#
- 2.Bc5#
- 2.Rxe4#
- 1...Sc5
- 2.Bxc5#
- 2.Rd5#
- 1...Qb7!
- threat
- 1.Sde7?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Bxf3
- 2.Rd5#
- 1...exf3
- 2.Qh4#
- 1...Qb5
- 2.Rxe4#
- 1...Sb4
- 2.Bc5#
- 2.Rxe4#
- 1...Sc5
- 2.Bxc5#
- 2.Rd5#
- 1...Sc7
- 2.Bc5#
- 2.Rxe4#
- 1...Qb7!
- threat
- 1.Sge7?
- threat
- 2.Rxe4#
- 1...Bxf3
- 2.Qxe3#
- 1...exf3
- 2.Qh4#
- 1...Sc5!
- threat
- 1.Rxd3+?
- 1...Bxd3
- 2.Qxe3#
- 1...exd3
- 2.Qh4#
- 1...cxd3!
- 1...Bxd3
- 1.Sxc3?
- Keys
- 1.Sxe3!
- threat
- 2.Rxe4#
- 1...Kxe3
- 2.Qf2#
- 1...Bxf3
- 2.Rd5#
- 1...exf3
- 2.Qh4#
- 1...Qb7
- 2.Sc2#
- 1...Sc5
- 2.Bxc5#
- threat
- 1.Sxe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD,XB(A)::QAB1(C),XP(c)
- Q(a);N_GUARD::QAB1(C),XP(c)
- B(b);N_SPINP(d),OGATE,XR(B)::QAB1(C),XP(e)
- B(b);OGATE::QAB1(C),XP(e)
- B(b);OGATE,XP(E)::QAB1(C),XP(e)
- P(h);OGATEB,XP(E)::QAR(C)
- Tries
- Try
- S(F);XP(c)
- Threat
- DUALS(2)
- Vars
- B(b);XP(E)::R1(G)
- Q(a);N_GUARD,N_SPINP(d)::S(F)
- P(d);S_CUTQ(a)::S(F),XB(b)
- Q(a);N_GUARD::S(F),XB(b)
- Refutation
- Q(a);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(b);XP(E)::R1(G)
- S(i);N_GUARD,XS(F)::B(I)
- P(h);OGATEB,XP(E)::QAR(C)
- Refutation
- Q(a);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(b);XP(E)::R1(G)
- Q(a);N_GUARD::S(F),XB(b)
- Refutation
- P(h);XP(E)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(b);XP(E)::R1(G)
- P(h);OGATEB,XP(E)::QAR(C)
- Q(a);::R1(G),XP(h)
- Refutation
- Q(a);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(b);XP(E)::R1(G)
- Q(a);::R1(G),XP(h)
- Refutation
- Q(a);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(b);XP(E)::R1(G)
- S(i);N_GUARD,XS(F)::B(I)
- P(h);OGATEB,XP(E)::QAR(C)
- Refutation
- Q(a);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(b);XP(E)::R1(G)
- P(h);OGATEB,XP(E)::QAR(C)
- Q(a);::R1(G),XP(h)
- Refutation
- Q(a);
- Try
- S(J);
- Threat
- R1(G),XP(h)
- Vars
- B(b);OGATE,XP(E)::QAB1(C),XP(e)
- P(h);OGATEB,XP(E)::QAR(C)
- Refutation
- S(i);
- Try
- R(B);CHECK,XP(d)
- Vars
- B(b);OGATE,XR(B)::QAB1(C),XP(e)
- P(h);S_CUTB(b),S_CUTP(f),XR(B)::QAR(C)
- Refutation
- P(f);XR(B)
- Try
- Actual
- S(F);XP(e)
- Threat
- R1(G),XP(h)
- Vars
- K(g);N_SPINP(d),OGATEB,P_SPINB(b),P_SPINP(h),S_FLIGHT,XS(F)::QAB1(C)
- B(b);XP(E)::R1(G)
- P(h);OGATEB,XP(E)::QAR(C)
- Q(a);N_GUARD::S(F)
- S(i);N_GUARD::B(I),XS(i)
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