MESON Chess Problem Database
Problem Display
PID: 7773 (2N5/2N3K1/p2R3P/r3kpB1/4P2p/3n4/3PQ1b1/1B1r4 w - - 0 1)
Alaikov, Venelin
The Problemist, 1993
#2
10 + 8
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rd5#
- 1...Ra2
- 2.Rd5#
- 1...Ra3
- 2.Rd5#
- 1...Ra4
- 2.Rd5#
- 1...Rd5
- 2.Rxd5#
- 1...Sf4
- 2.Bf6#
- 1...Sc5
- 2.Rd5#
- 1...f4
- 2.Bf6#
- 1...Ra1
- Tries
- 1.Qxd3?
- threat
- 2.Re6#
- 2.Qc3#
- 2.Qd4#
- 1...Rxb1
- 2.Re6#
- 2.Qd4#
- 1...Rxd2
- 2.Re6#
- 1...Rc1
- 2.Re6#
- 2.Qd4#
- 1...Ra3
- 2.Rd5#
- 2.Re6#
- 2.Qd4#
- 2.Qd5#
- 1...Ra4
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 1...Rc5
- 2.Re6#
- 2.Qd4#
- 1...Rd5
- 2.Rxd5#
- 2.Re6#
- 2.Qxd5#
- 1...fxe4!
- threat
- 1.Qf3?
- threat
- 2.Bf6#
- 2.Qxf5#
- 1...fxe4
- 2.Bf6#
- 2.Qf6#
- 1...Rd5
- 2.Bf6#
- 2.Rxd5#
- 1...Rf1
- 2.Bf6#
- 1...Bh3
- 2.Bf6#
- 1...Sf4
- 2.Bxf4#
- 2.Bf6#
- 2.Qc3#
- 2.Qxf4#
- 1...f4
- 2.Bf6#
- 1...Bxf3!
- threat
- 1.Qg4?
- threat
- 2.Bf6#
- 2.Qxf5#
- 1...Bxe4
- 2.Bf6#
- 1...fxe4
- 2.Bf6#
- 2.Qe6#
- 1...Rd5
- 2.Bf6#
- 2.Rxd5#
- 1...f4
- 2.Qf5#
- 2.Qe6#
- 1...Rf1
- 2.Bf6#
- 1...Bh3
- 2.Bf6#
- 1...fxg4!
- threat
- 1.Qh5?
- threat
- 2.Qe8#
- 1...Kxe4
- 2.Qe2#
- 1...fxe4
- 2.Be3#
- 1...Sf4
- 2.Bf6#
- 1...Sc5
- 2.Rd5#
- 1...Rd5!
- threat
- 1.Qf2?
- threat
- 2.Re6#
- 2.Qd4#
- 2.Qxf5#
- 1...Kxe4
- 2.Qe3#
- 2.Qe2#
- 2.Qf4#
- 1...Bxe4
- 2.Bf6#
- 2.Re6#
- 2.Qd4#
- 1...fxe4
- 2.Bf6#
- 2.Re6#
- 2.Qf6#
- 1...Rf1
- 2.Re6#
- 2.Qd4#
- 1...Ra4
- 2.Re6#
- 2.Qxf5#
- 1...Rd5
- 2.Re6#
- 1...Bf3
- 2.Re6#
- 2.Qd4#
- 1...Bh3
- 2.Re6#
- 2.Qd4#
- 1...Sf4
- 2.Bxf4#
- 2.Bf6#
- 2.Qd4#
- 2.Qxf4#
- 1...Sc5
- 2.Bf4#
- 2.Bf6#
- 2.Rd5#
- 2.Qd4#
- 2.Qf4#
- 2.Qxf5#
- 1...f4
- 2.Re6#
- 2.Qd4#
- 1...Sxf2!
- threat
- 1.Qe3?
- threat
- 2.Bf6#
- 2.Re6#
- 2.Qd4#
- 1...Ra4
- 2.Bf6#
- 2.Rd5#
- 2.Re6#
- 1...Rd5
- 2.Bf6#
- 2.Rxd5#
- 2.Re6#
- 1...Sf4
- 2.Bxf4#
- 2.Bf6#
- 2.Qd4#
- 2.Qxf4#
- 2.Qc3#
- 1...Sc5
- 2.Bf4#
- 2.Bf6#
- 2.Rd5#
- 2.Qd4#
- 2.Qf4#
- 2.Qc3#
- 1...fxe4!
- threat
- 1.Qxd3?
- Keys
- 1.Be3!
- threat
- 2.Re6#
- 1...Kxe4
- 2.Bg5#
- 1...fxe4
- 2.Qh5#
- 1...Sf4
- 2.Bd4#
- 1...Sc5
- 2.Rd5#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(e);N_GUARD::R1(F)
- R(e);N_GUARD::R1(F),XR(e)
- S(c);SBLOCK::B(E)
- S(c);S_CUTR(e)::R1(F)
- P(g);SBLOCK::B(E)
- Tries
- Try
- Q(C);XS(c)
- Threat
- DUALS(3)
- Vars
- R(a);XP(B)::R1(F)
- Refutation
- P(g);XP(D)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- R(a);::B(E)
- B(b);::B(E)
- P(g);::B(E)
- Refutation
- B(b);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(b);XP(D)::B(E)
- R(a);::B(E)
- B(b);::B(E)
- Refutation
- P(g);XQ(C)
- Try
- Q(C);
- Threat
- QAR(C)
- Vars
- K(f);OGATEB,P-FLIGHT,P_SPINS(c),XP(D)::QAR2(C)
- P(g);OGATEB,SBLOCK,XP(D)::QAR(C)+B(E)
- S(c);SBLOCK::B(E)
- S(c);S_CUTR(e)::R1(F)
- Refutation
- R(e);
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- R(e);::R1(F)
- Refutation
- S(c);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(3)
- Refutation
- P(g);P_SPINP(g),XP(D)
- Try
- Actual
- B(E);
- Threat
- R1(F)
- Vars
- K(f);OGATEB,P-FLIGHT,P_SPINS(c),XP(D)::QAR(C)+B(E)
- P(g);OGATEB,SBLOCK,XP(D)::QAR(C)
- S(c);SBLOCK::B(E)
- S(c);S_CUTR(e)::R1(F)
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