MESON Chess Problem Database
Problem Display
PID: 97352 (6Qq/1R2Np2/1K1kb3/2Np2R1/4PPn1/1p6/8/3r3r w - - 0 1)
Alaikov, Venelin
Problemas, 1965
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Qb8#
- 1...Qb2
- 2.Qb8#
- 1...Qc3
- 2.Qb8#
- 1...Qd4
- 2.Qb8#
- 1...Qe5
- 2.Qb8#
- 1...Qf6
- 2.Qb8#
- 1...Qg7
- 2.Qb8#
- 1...Qh2
- 2.Qb8#
- 1...Qh3
- 2.Qb8#
- 1...Qh4
- 2.Qb8#
- 1...Qh5
- 2.Qb8#
- 1...Qh6
- 2.Qb8#
- 1...Qh7
- 2.Qb8#
- 1...Bf5
- 2.Sxf5#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Sxc8#
- 1...Sf6
- 2.e5#
- 1...dxe4
- 2.Sxe4#
- 1...f5
- 2.Qxe6#
- 1...f6
- 2.Qxe6#
- 1...Qa1
- Tries
- 1.Rxd5+?
- 1...Bxd5
- 2.Sf5#
- 2.Sc8#
- 2.Rd7#
- 1...Rxd5!
- 1...Bxd5
- 1.Rc7?
- threat
- 2.Sb7#
- 1...Bd7
- 2.Rxd7#
- 1...Bf5
- 2.Sxf5#
- 1...Bc8
- 2.Sxc8#
- 1...Qd4!
- threat
- 1.Qd8+?
- 1...Bd7
- 2.Sf5#
- 2.Sc8#
- 2.Rxd7#
- 2.Qxd7#
- 1...Qxd8+!
- 1...Bd7
- 1.Qf8?
- threat
- 2.Sf5#
- 2.Sc8#
- 2.Sg8#
- 1...dxe4
- 2.Sxe4#
- 2.Sc8#
- 2.Sg8#
- 1...Qf6
- 2.Sf5#
- 2.Sc8#
- 2.Qb8#
- 1...Qg7
- 2.Sf5#
- 2.Sc8#
- 2.Qb8#
- 1...Qh6
- 2.Sf5#
- 2.Sc8#
- 2.Qb8#
- 1...Qg8
- 2.Sf5#
- 2.Sc8#
- 2.Sxg8#
- 1...Bf5
- 2.Sxf5#
- 2.Sc8#
- 2.Sg8#
- 1...Bc8
- 2.Sf5#
- 2.Sxc8#
- 2.Sg8#
- 1...f5
- 2.Sxf5#
- 2.Sc8#
- 2.Sg8#
- 1...Qxf8!
- threat
- 1.Qxh8?
- threat
- 2.Qb8#
- 1...Bd7
- 2.Rxd7#
- 1...Bc8
- 2.Sxc8#
- 1...Rxh8!
- threat
- 1.e5+?
- 1...Qxe5
- 2.Qb8#
- 1...Sxe5!
- 1...Qxe5
- 1.Rxd5+?
- Keys
- 1.Rg6!
- threat
- 2.Sf5#
- 2.Sc8#
- 2.Rd7#
- 1...Qxg8
- 2.Sf5#
- 2.Rd7#
- 1...dxe4
- 2.Sxe4#
- 2.Rd7#
- 1...fxg6
- 2.Qxe6#
- 1...Qe5
- 2.Sc8#
- 2.Rd7#
- 2.Qb8#
- 2.Qd8#
- 1...Qf6
- 2.Qb8#
- 1...Qh5
- 2.Sc8#
- 2.Rd7#
- 2.Qb8#
- 2.Qd8#
- 1...Rh5
- 2.Sc8#
- 2.Rd7#
- 1...Se3
- 2.Sc8#
- 2.Rd7#
- 1...Se5
- 2.Sf5#
- 2.Sc8#
- 1...Sf6
- 2.e5#
- 1...Sh6
- 2.Sc8#
- 2.Rd7#
- 1...f5
- 2.Sxf5#
- 2.Sc8#
- 2.Rxe6#
- 2.Rd7#
- 2.Qxe6#
- 1...f6
- 2.Qxe6#
- threat
- 1.Rg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 17
- Sets
- Q(i);N_GUARD::QAB(H)
- Q(i);N_GUARD,P_PINS(C)::QAB(H)
- B(g);N_GUARD::S(G),XB(g)
- B(g);N_GUARD::R1(F),XB(g)
- S(d);N_GUARD,S_CUTQ(i)::P(A)
- P(e);XP(A)::S(C),XP(e)
- P(h);OGATE::QAR1(H),XB(g)
- Tries
- Try
- R(D);CHECK,XP(e)
- Refutation
- R(a);XR(D)
- Try
- R(F);
- Threat
- S(C)
- Vars
- B(g);N_GUARD::R1(F),XB(g)
- B(g);N_GUARD::S(G),XB(g)
- Refutation
- Q(i);P_PINS(C)
- Try
- Q(H);CHECK
- Refutation
- Q(i);CHECK,XQ(H)
- Try
- Q(H);
- Threat
- DUALS(3)
- Refutation
- Q(i);XQ(H)
- Try
- Q(H);XQ(i)
- Threat
- QAB(H)
- Vars
- B(g);N_GUARD::R1(F),XB(g)
- B(g);N_GUARD::S(G),XB(g)
- Refutation
- R(b);XQ(H)
- Try
- P(A);CHECK
- Vars
- Q(i);XP(A)::QAB(H)
- Refutation
- S(d);XP(A)
- Try
- Actual
- R(D);P_PINB(g)
- Threat
- DUALS(3)
- Vars
- P(h);N_SPINB(g),OGATE,XR(D)::QAR1(H),XB(g)
- Q(i);N_GUARD,N_SPINB(g)::QAB(H)
- S(d);N_GUARD,N_SPINB(g),S_CUTQ(i)::P(A)
- P(h);N_SPINB(g),OGATE::QAR1(H),XB(g)
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