MESON Chess Problem Database
Problem Display
PID: 50768 (r7/R1ppRP2/1P1p4/3p3Q/2Nk1n2/B3Np2/b2K4/4n3 w - - 0 1)
Postnikov, Oleksandr Borisovich
1st Prize, Shedey JT, 1990
#2
9 + 10
| 4827 | FIDE Album (1989-1991) | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Rxa7
- 2.Qh8#
- 1...Rh8
- 2.Qxh8#
- 1...Bxc4
- 2.Sf5#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...c5
- 2.Bb2#
- 1...Rxa7
- Tries
- 1.Sa5?
- threat
- 2.Sf5#
- 1...Bb1
- 2.Sb3#
- 1...Se6!
- threat
- 1.Bc5+?
- 1...dxc5
- 2.Qe5#
- 1...Kxc5!
- 1...dxc5
- 1.Ra5?
- threat
- 2.Bb2#
- 1...Rxa5
- 2.Qh8#
- 1...dxc4
- 2.Sf5#
- 1...Se6
- 2.Qxd5#
- 1...Se2
- 2.Rxd5#
- 2.Qxd5#
- 1...Sfd3
- 2.Rxd5#
- 2.Qxd5#
- 1...Sed3!
- threat
- 1.Rxc7?
- threat
- 2.Sf5#
- 2.Bb2#
- 1...Rxa3
- 2.Sf5#
- 2.Qh8#
- 1...Se6
- 2.Qxd5#
- 1...Bb1
- 2.Bb2#
- 1...Sed3
- 2.Sc2#
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 2.Qxd5#
- 1...Sfd3
- 2.Sf5#
- 2.Qxd5#
- 1...dxc4!
- threat
- 1.Re4+?
- 1...dxe4
- 2.Bb2#
- 1...Kxe4!
- 1...dxe4
- 1.Qg4?
- threat
- 2.Qxf4#
- 2.Qg7#
- 1...Rg8
- 2.Qxf4#
- 1...Bb1
- 2.Qg7#
- 1...Sg2
- 2.Qg7#
- 1...Sd3!
- threat
- 1.Qh4?
- threat
- 2.Qf6#
- 2.Qxf4#
- 1...Bb1
- 2.Qf6#
- 1...Sg2
- 2.Qf6#
- 1...Sd3!
- threat
- 1.Qf5?
- threat
- 2.Qxf4#
- 2.Qf6#
- 1...Bb1
- 2.Qf6#
- 1...Seg2
- 2.Qf6#
- 1...Se2
- 2.Qxd5#
- 2.Qf6#
- 1...Sfg2
- 2.Qxd5#
- 2.Qf6#
- 1...Sfd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 2.Qf6#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sed3!
- threat
- 1.Qg5?
- threat
- 2.Qxf4#
- 2.Qf6#
- 2.Qg7#
- 1...Se6
- 2.Qxd5#
- 1...Rg8
- 2.Qxf4#
- 2.Qf6#
- 1...Bb1
- 2.Qf6#
- 2.Qg7#
- 1...Seg2
- 2.Qf6#
- 2.Qg7#
- 1...Se2
- 2.Qf6#
- 2.Qxd5#
- 2.Qg7#
- 1...Sfg2
- 2.Qf6#
- 2.Qxd5#
- 2.Qg7#
- 1...Sfd3
- 2.Qxd5#
- 1...Sh3
- 2.Qf6#
- 2.Qxd5#
- 2.Qg7#
- 1...Sh5
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sed3!
- threat
- 1.Sa5?
- Keys
- 1.Ra4!
- threat
- 2.Sf5#
- 1...Rxa4
- 2.Qh8#
- 1...dxc4
- 2.Bb2#
- 1...Se6
- 2.Qxd5#
- 1...Bb1
- 2.Sa5#
- threat
- 1.Ra4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(j);N_GUARD,XR(G)::QAB(E)
- R(j);N_GUARD::QAB(E),XR(j)
- B(b);SBLOCK,XS(D)::S(C)
- S(e);N_GUARD::QAR1(E),XP(f)
- P(h);SBLOCK::B(B)
- Tries
- Try
- S(D);
- Threat
- S(C)
- Vars
- B(b);N_GUARD::S(D)
- Refutation
- S(e);
- Try
- B(B);CHECK
- Vars
- P(g);SBLOCK,XB(B)::QAB1(E)
- Refutation
- K(d);P_SPINP(f),S_FLIGHT,XB(B)
- Try
- R(G);
- Threat
- B(B)
- Vars
- R(j);N_GUARD,XR(G)::QAB(E)
- P(f);SBLOCK,XS(D)::S(C)
- S(e);N_GUARD::QAR1(E),XP(f)
- Refutation
- S(a);
- Try
- R(G);XP(h)
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD::QAR1(E),XP(f)
- B(b);::B(B)
- Refutation
- P(f);XS(D)
- Try
- R(H);CHECK
- Vars
- P(f);SBLOCK,XR(H)::B(B)
- Refutation
- K(d);P-FLIGHT,XR(H)
- Try
- Q(E);P_PINS(e)
- Threat
- DUALS(2)
- Vars
- R(j);::QAR2(E),XS(e)
- B(b);::QAB(E)
- S(a);::QAB(E)
- Refutation
- S(a);
- Try
- Q(E);P_PINS(e)
- Threat
- DUALS(2)
- Vars
- B(b);::QAB(E)
- S(a);::QAB(E)
- Refutation
- S(a);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(b);::QAB(E)
- S(a);::QAB(E)
- S(e);N_GUARD::QAR1(E),XP(f)
- Refutation
- S(a);
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- S(e);N_GUARD::QAR1(E),XP(f)
- Refutation
- S(a);
- Try
- Actual
- R(G);
- Threat
- S(C)
- Vars
- R(j);N_GUARD,XR(G)::QAB(E)
- P(f);P_SPINP(f),XS(D)::B(B)
- S(e);N_GUARD::QAR1(E),XP(f)
- B(b);N_GUARD::R(G)+S(D)
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