MESON Chess Problem Database
Problem Display
PID: 135746 (1Q6/r2Rp1K1/r3k3/1p2N1B1/2q4b/p3N2b/B7/3R4 w - - 0 1)
Ancin, Andrej
Postsjakk, 1963
#2
8 + 9
| 14649 | Andrej Ancin - Chess Compositions | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Qb3
- 2.Bxb3#
- 1...Qd5
- 2.Bxd5#
- 1...Ra8
- 2.Rxe7#
- 1...b4
- 2.Bxc4#
- 1...Qb3
- Tries
- 1.S5xc4?
- threat
- 2.Sb2#
- 2.Sxa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Qe5#
- 2.Qg8#
- 1...Rxd7
- 2.Qe5#
- 2.Qg8#
- 1...bxc4
- 2.Bxc4#
- 1...Ra4
- 2.Qe5#
- 2.Qb6#
- 2.Qg8#
- 1...Ra5
- 2.Sb2#
- 2.Sxa3#
- 2.Sxa5#
- 2.Se5#
- 2.Sb6#
- 2.Qe5#
- 2.Qb6#
- 2.Qg8#
- 1...Rb6
- 2.Sb2#
- 2.Sxa3#
- 2.Sa5#
- 2.Se5#
- 2.Sxb6#
- 2.Qe5#
- 2.Qxb6#
- 2.Qg8#
- 1...Rc6
- 2.Qe5#
- 2.Qg8#
- 1...Rc7
- 2.Qg8#
- 1...Ra8
- 2.Sb2#
- 2.Sxa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Rxe7#
- 2.Qe5#
- 1...Bf1
- 2.Qe5#
- 2.Qg8#
- 1...Bg2
- 2.Qe5#
- 2.Qg8#
- 1...Bg3
- 2.Sb2#
- 2.Sxa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Qg8#
- 1...b4
- 2.Qe5#
- 2.Qg8#
- 1...Rd6!
- threat
- 1.Sg6?
- threat
- 2.Sf4#
- 2.Sf8#
- 2.Qe5#
- 2.Qg8#
- 1...Bxg5
- 2.Sf8#
- 2.Qe5#
- 2.Qg8#
- 1...Qd5
- 2.Sf8#
- 1...Rc7
- 2.Qg8#
- 1...Ra8
- 2.Sf4#
- 2.Sf8#
- 2.Rxe7#
- 2.Qe5#
- 1...Bg3
- 2.Sf8#
- 2.Qg8#
- 1...Rd6!
- threat
- 1.Bf6?
- threat
- 2.Qg8#
- 1...exf6
- 2.Qe8#
- 1...Ra8
- 2.Rxe7#
- 1...Bxf6+!
- threat
- 1.R7d5?
- threat
- 2.Qg8#
- 1...Qxd5
- 2.Bxd5#
- 1...Qf1
- 2.R5d3#
- 1...Qf4
- 2.R5d4#
- 1...Qc8
- 2.Rc5#
- 1...Ra8!
- threat
- 1.Rxa7?
- threat
- 2.Rxa6#
- 2.Rxe7#
- 1...Bxg5
- 2.Rxa6#
- 1...Rd6
- 2.Rxe7#
- 1...Ra4
- 2.Rxe7#
- 1...Ra5
- 2.Rxe7#
- 1...Rb6
- 2.Rxe7#
- 1...Rc6
- 2.Rxe7#
- 1...Bg2
- 2.Rxe7#
- 1...Rxa7!
- threat
- 1.S5xc4?
- Keys
- 1.R1d5!
- threat
- 2.Qg8#
- 1...Qxd5
- 2.Bxd5#
- 1...Qf1
- 2.Rd3#
- 1...Qf4
- 2.Rd4#
- 1...Qc8
- 2.Rc5#
- 1...Ra8
- 2.Rxe7#
- threat
- 1.R1d5!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(c);OGATEB::B(B),XQ(c)
- Q(c);OGATE::B(B),XQ(c)
- R(h);N_GUARD::R1(F),XP(i)
- P(e);N_GUARD::B(B),XQ(c)
- Tries
- Try
- S(D);XQ(c)
- Threat
- DUALS(7)
- Vars
- P(e);OGATE,P_SPINP(e),XS(D)::B(B),XP(e)
- R(h);::QAB(H)
- Refutation
- R(f);
- Try
- S(D);
- Threat
- DUALS(4)
- Vars
- Q(c);::S(D)
- R(h);::QAB(H)
- Refutation
- R(f);
- Try
- B(E);
- Threat
- QAB(H)
- Vars
- P(i);OGATEB,P_PINR(F),XB(E)::QAR2(H)
- R(h);N_GUARD::R1(F),XP(i)
- Refutation
- B(d);CHECK,XB(E)
- Try
- R(F);N_PINQ(c)
- Threat
- QAB(H)
- Vars
- Q(c);OGATE,P_SPINQ(c),XR(F)::B(B),XQ(c)
- Q(c);OGATEB::B(B)+R(F)
- Refutation
- R(h);
- Try
- R(F);XR(h)
- Threat
- DUALS(2)
- Vars
- B(d);XB(E)::R(F),XR(f)
- R(f);::R1(F),XP(i)
- B(b);::R1(F),XP(i)
- Refutation
- R(f);XR(F)
- Try
- Actual
- R(A);N_PINQ(c)
- Threat
- QAB(H)
- Vars
- Q(c);OGATE,P_SPINQ(c),XR(A)::B(B),XQ(c)
- Q(c);OGATEB::B(B)+R(A)
- R(h);N_GUARD::R1(F),XP(i)
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