MESON Chess Problem Database
Problem Display
PID: 149847 (q1r1R3/Br3p1b/3pp2p/7Q/1RBNk3/2np2P1/3P2n1/7K w - - 0 1)
Kopaev, Viacheslav Georgievich
1st Prize, Chervoni Girnik, 1965
#2
9 + 12
| 56 | The Problemist | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Bf5
- 2.Qxf5#
- 1...Bg8
- 2.Qf5#
- 1...Sb1
- 2.Bd5#
- 2.Qd5#
- 1...Sd1
- 2.Bd5#
- 2.Qd5#
- 1...Sa2
- 2.Bd5#
- 2.Qd5#
- 1...Se2
- 2.Bd5#
- 2.Qd5#
- 1...Sa4
- 2.Bd5#
- 2.Qd5#
- 1...Sb5
- 2.Bd5#
- 2.Qd5#
- 1...Sd5
- 2.Bxd5#
- 2.Qxd5#
- 1...e5
- 2.Qf3#
- 1...f5
- 2.Rxe6#
- 1...f6
- 2.Rxe6#
- 1...Bf5
- Tries
- 1.Se2?
- threat
- 2.Sxc3#
- 2.Bd5#
- 1...Qxa7
- 2.Bd5#
- 1...Rxb4
- 2.Sxc3#
- 1...Rxa7
- 2.Bd5#
- 1...Rxc4
- 2.Sxc3#
- 2.Rxc4#
- 1...Sxe2
- 2.Bd5#
- 2.Qd5#
- 1...dxe2
- 2.d3#
- 1...f5
- 2.Rxe6#
- 1...Rb6
- 2.Bd5#
- 1...Rc5
- 2.Bd5#
- 1...Sb1
- 2.Bd5#
- 2.Qd5#
- 1...Sd1
- 2.Bd5#
- 2.Qd5#
- 1...Sa2
- 2.Bd5#
- 2.Qd5#
- 1...Sa4
- 2.Bd5#
- 2.Qd5#
- 1...Sb5
- 2.Bd5#
- 2.Qd5#
- 1...Sd5
- 2.Bxd5#
- 2.Qxd5#
- 1...d5
- 2.Sxc3#
- 2.Bxd5#
- 1...e5
- 2.Sxc3#
- 1...Bf5!
- threat
- 1.Sb5?
- threat
- 2.Sxc3#
- 2.Sxd6#
- 2.Bd5#
- 1...Qxa7
- 2.Bd5#
- 1...Rxb5
- 2.Bd5#
- 1...Rxa7
- 2.Bd5#
- 1...Rxc4
- 2.Sxc3#
- 2.Sxd6#
- 2.Rxc4#
- 1...Sxb5
- 2.Bd5#
- 2.Qd5#
- 1...f5
- 2.Rxe6#
- 1...Qb8
- 2.Sxc3#
- 2.Bd5#
- 1...Rb6
- 2.Bd5#
- 1...Rd7
- 2.Sxc3#
- 2.Bd5#
- 1...Rc5
- 2.Bd5#
- 1...Rc6
- 2.Sxc3#
- 2.Bd5#
- 1...Rd8
- 2.Sxc3#
- 2.Ba2#
- 2.Bb3#
- 2.Bd5#
- 2.Bxe6#
- 1...Sb1
- 2.Sxd6#
- 2.Bd5#
- 2.Qd5#
- 1...Sd1
- 2.Sxd6#
- 2.Bd5#
- 2.Qd5#
- 1...Sa2
- 2.Sxd6#
- 2.Bd5#
- 2.Qd5#
- 1...Se2
- 2.Sxd6#
- 2.Bd5#
- 2.Qd5#
- 1...Sa4
- 2.Sxd6#
- 2.Bd5#
- 2.Qd5#
- 1...Sd5
- 2.Sxd6#
- 2.Bxd5#
- 2.Qxd5#
- 1...d5
- 2.Sxc3#
- 2.Sd6#
- 2.Bxd5#
- 1...e5
- 2.Sxc3#
- 2.Sxd6#
- 1...Bf5!
- threat
- 1.Bxe6?
- threat
- 2.Bd5#
- 1...Rxe8
- 2.Sb5#
- 1...fxe6
- 2.Rxe6#
- 1...Bf5
- 2.Qxf5#
- 1...Re7
- 2.Sc6#
- 1...Sd5
- 2.Bxd5#
- 2.Bf5#
- 2.Qxd5#
- 1...d5
- 2.Bxd5#
- 2.Bf5#
- 1...f5!
- threat
- 1.Qg4+?
- 1...Sf4
- 2.Qxf4#
- 1...Ke5!
- 1...Sf4
- 1.Qg6+?
- 1...Ke5
- 2.Sf3#
- 1...fxg6
- 2.Rxe6#
- 1...f5
- 2.Rxe6#
- 2.Qxe6#
- 1...Bxg6!
- 1...Ke5
- 1.Se2?
- Keys
- 1.Sxe6!
- threat
- 2.Bd5#
- 1...Rxb4
- 2.Sd8#
- 1...Rxc4
- 2.Rxc4#
- 1...Bf5
- 2.Sg5#
- 1...f5
- 2.Sg5#
- 1...Sd5
- 2.Bxd5#
- 2.Qxd5#
- 1...d5
- 2.Bxd5#
- threat
- 1.Sxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- B(j);N_GUARD::QAB1(G),XB(j)
- B(j);N_GUARD::QAB1(G)
- P(f);::QAB1(G)
- P(i);N_GUARD::R(I),XP(f)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(k);XB(H)::R(D)+B(E),DCHECK
- R(h);XR(D)::S(F),XS(b)
- R(h);XB(H)::R(D)+B(E),DCHECK
- P(c);OGATE,XS(F)::P(B)
- P(i);N_GUARD::R(I),XP(f)
- R(h);::R(D)+B(E),DCHECK
- R(l);::R(D)+B(E),DCHECK
- P(f);::S(F),XS(b)
- Refutation
- B(j);
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- Q(k);XB(H)::R(D)+B(E),DCHECK
- R(h);XS(F)::R(D)+B(E),DCHECK
- R(h);XB(H)::R(D)+B(E),DCHECK
- P(i);N_GUARD::R(I),XP(f)
- R(h);::R(D)+B(E),DCHECK
- R(l);::R(D)+B(E),DCHECK
- Refutation
- B(j);
- Try
- B(E);XP(f)
- Threat
- R(I)+B(E),DCHECK
- Vars
- R(l);N_GUARD,XR(I)::R(D)+S(F)
- P(i);OGATE,P_SPINP(i),XB(E)::R(I),XP(i)
- B(j);N_GUARD::QAB1(G),XB(j)
- R(h);N_GUARD::R(D)+S(F)
- Refutation
- P(i);
- Try
- Q(G);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR1(G),XS(a)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(G);CHECK
- Vars
- K(d);P-FLIGHT::S(F)
- P(i);XQ(G)::R(I),XP(f)
- Refutation
- B(j);XQ(G)
- Try
- Actual
- S(F);XP(f)
- Threat
- R(D)+B(E),DCHECK
- Vars
- R(h);N_GUARD,XR(D)::R(I)+S(F)
- R(l);OGATE,P_SPINR(l),XB(E)::R(D),XR(l)
- B(j);SBLOCK::R(I)+S(F),DCHECK
- P(i);SBLOCK::R(I)+S(F),DCHECK
- P(e);::R(D)+B(E),DCHECK,XP(e)
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