MESON Chess Problem Database
Problem Display
PID: 109040 (2Bb4/1R4nq/1p3pbR/3Nkp2/1BQp3P/r4pPK/3N4/8 w - - 0 1)
Nadezhdin, Nikolai Dmitrievich
Shakhmatnaya kompozitsiya, 1992
#2
10 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...d3
- 2.Sxf3#
- 1...f4
- 2.gxf4#
- 1...d3
- Tries
- 1.Sc3?
- threat
- 2.Sxf3#
- 2.Qb5#
- 2.Qd5#
- 1...dxc3
- 2.Sxf3#
- 1...Qg8
- 2.Sxf3#
- 1...Ra5
- 2.Sxf3#
- 1...Bh5
- 2.Qb5#
- 2.Qd5#
- 1...Bf7
- 2.Sxf3#
- 1...Be8
- 2.Sxf3#
- 2.Qd5#
- 1...Be7
- 2.Sxf3#
- 2.Qd5#
- 1...Se6
- 2.Sxf3#
- 2.Qd5#
- 2.Qxe6#
- 1...f2
- 2.Sf3#
- 2.Qe2#
- 2.Qb5#
- 2.Qd5#
- 1...d3
- 2.Sxf3#
- 2.Qd5#
- 2.Qf4#
- 1...b5
- 2.Sxf3#
- 2.Rxb5#
- 2.Qxb5#
- 2.Qd5#
- 2.Qc5#
- 1...Rxc3!
- threat
- 1.Sf4?
- threat
- 2.Qb5#
- 2.Qd5#
- 1...Qg8
- 2.Sxg6#
- 1...Rc3
- 2.Qd5#
- 1...Ra5
- 2.Sd3#
- 1...Be8
- 2.Qd5#
- 1...Be7
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 2.Qxe6#
- 1...d3
- 2.Sxf3#
- 2.Qd5#
- 1...b5
- 2.Rxb5#
- 2.Qxb5#
- 2.Qd5#
- 2.Qc5#
- 1...Bf7!
- threat
- 1.Sxb6?
- threat
- 2.Sd7#
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Qg8
- 2.Sd7#
- 1...Rc3
- 2.Sd7#
- 2.Qd5#
- 1...Ra5
- 2.Sd7#
- 1...Bf7
- 2.Sd7#
- 1...Be8
- 2.Qd5#
- 2.Qc5#
- 1...Be7
- 2.Sd7#
- 2.Qd5#
- 1...Sh5
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 2.Qc5#
- 1...Se6
- 2.Qd5#
- 2.Qxe6#
- 1...Se8
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 2.Qc5#
- 1...d3
- 2.Sxf3#
- 2.Sd7#
- 2.Qd5#
- 2.Qf4#
- 2.Qc5#
- 1...f4
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Bxb6!
- threat
- 1.Se7?
- threat
- 2.Sc6#
- 2.Qb5#
- 2.Qd5#
- 1...Qg8
- 2.Sc6#
- 2.Sxg6#
- 1...Rc3
- 2.Sc6#
- 2.Qd5#
- 1...Ra5
- 2.Sc6#
- 1...Bf7
- 2.Sc6#
- 1...Be8
- 2.Qd5#
- 1...Se6
- 2.Sc6#
- 2.Qd5#
- 2.Qxe6#
- 1...d3
- 2.Sxf3#
- 2.Sc6#
- 2.Qd5#
- 2.Qf4#
- 1...b5
- 2.Sc6#
- 2.Rxb5#
- 2.Qxb5#
- 2.Qd5#
- 2.Qc5#
- 1...Bxe7!
- threat
- 1.Re7+?
- 1...Se6
- 2.Rxe6#
- 1...Bxe7!
- 1...Se6
- 1.Qc7+?
- 1...Kxd5
- 2.Qd6#
- 1...Bxc7!
- 1...Kxd5
- 1.Sc3?
- Keys
- 1.Sxf6!
- threat
- 2.Sd7#
- 1...Kxf6
- 2.Qxd4#
- 1...Bxf6
- 2.Qb5#
- 1...Be8
- 2.Qd5#
- 1...Sh5
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Se8
- 2.Qe6#
- 1...f4
- 2.Sg4#
- threat
- 1.Sxf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- P(c);S_CUTR(a)::S(A),XP(b)
- P(e);OGATE::P(B),XP(e)
- Tries
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- P(c);XS(G)::S(A),XP(b)
- Q(j);::S(A),XP(b)
- R(a);::S(A),XP(b)
- B(h);::S(A),XP(b)
- Refutation
- R(a);XS(G)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD::S(G),XB(h)
- R(a);::QAR1(E)
- R(a);N_GUARD::S(G)
- B(h);::QAR1(E)
- B(k);::QAR1(E)
- Refutation
- B(h);
- Try
- S(G);XP(f)
- Threat
- DUALS(4)
- Vars
- Q(j);::S(G)
- R(a);::S(G)
- B(h);::S(G)
- Refutation
- B(k);XS(G)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- R(a);::S(G)
- B(h);::S(G)
- B(h);::QAR1(E)
- Refutation
- B(k);XS(G)
- Try
- R(I);CHECK
- Vars
- S(i);N_GUARD,P_SPINS(i)::R1(I),XS(i)
- Refutation
- B(k);XR(I)
- Try
- Q(E);CHECK
- Vars
- K(d);P-FLIGHT,XS(G)::QAR1(E)
- Refutation
- B(k);XQ(E)
- Try
- Actual
- S(G);XP(g)
- Threat
- S(G)
- Vars
- K(d);P_SPINB(h),S_FLIGHT,XS(G)::QAB(E),XP(c)
- B(k);SBLOCK,XS(G)::QAR(E)
- B(h);::QAR1(E)
- S(i);N_GUARD::QAR1(E)
- S(i);N_GUARD::QAR1(E),XS(i)
- P(e);N_GUARD::S(G)
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