MESON Chess Problem Database
Problem Display
PID: 75348 (2br4/3pPRQ1/1BP5/5pNp/5k1r/3R1Pp1/KN4nq/1Bb3n1 w - - 0 1)
Alaikov, Venelin
1st Prize, Buletin Problemistic, 1990
#2
11 + 12
| 133 | The Problemist Supplement | 2007 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Se3
- 2.Rd4#
- 1...Se3
- Tries
- 1.Be3+?
- 1...Sxe3
- 2.Rd4#
- 1...Bxe3!
- 1...Sxe3
- 1.Re3?
- threat
- 2.Sd3#
- 2.Re4#
- 2.Rxf5#
- 1...Bxb2
- 2.Re4#
- 2.Rxf5#
- 1...Bxe3
- 2.Sd3#
- 2.Rxf5#
- 1...Sxf3
- 2.Re4#
- 1...dxc6
- 2.Re4#
- 1...Qh3
- 2.Sd3#
- 2.Re4#
- 1...Rf8
- 2.Sd3#
- 2.Re4#
- 1...Ba6
- 2.Re4#
- 2.Rxf5#
- 1...Se1
- 2.Re4#
- 2.Rxf5#
- 1...d5
- 2.Sd3#
- 1...d6
- 2.Sd3#
- 2.Re4#
- 1...Sxe3!
- threat
- 1.Rd5?
- threat
- 2.Sd3#
- 2.Rdxf5#
- 2.Rfxf5#
- 1...Bxb2
- 2.Rdxf5#
- 2.Rfxf5#
- 1...dxc6
- 2.Sd3#
- 1...Qh3
- 2.Sd3#
- 1...Rf8
- 2.Sd3#
- 2.Rdxf5#
- 1...Ba6
- 2.Rdxf5#
- 2.Rfxf5#
- 1...Se1
- 2.Rdxf5#
- 2.Rfxf5#
- 1...Se3
- 2.Rd4#
- 1...d6
- 2.Sd3#
- 1...Sxf3!
- threat
- 1.Rd6?
- threat
- 2.Sd3#
- 2.Rxf5#
- 1...Bxb2
- 2.Rxf5#
- 1...dxc6
- 2.Sd3#
- 1...Qh3
- 2.Sd3#
- 1...Rf8
- 2.Sd3#
- 1...Ba6
- 2.Rxf5#
- 1...Se1
- 2.Rxf5#
- 1...Se3
- 2.Rd4#
- 1...Sxf3!
- threat
- 1.cxd7?
- threat
- 2.Se6#
- 2.Bc7#
- 1...Rxd7
- 2.Se6#
- 1...Bxb2
- 2.Se6#
- 1...Bxd7
- 2.Bc7#
- 1...Be3
- 2.Bc7#
- 1...Se3
- 2.Bc7#
- 2.Rd4#
- 1...Sxf3!
- threat
- 1.e8Q?
- threat
- 2.Rd4#
- 2.Qe4#
- 2.Qee5#
- 1...Bxb2
- 2.Qe4#
- 1...Sxf3
- 2.Qe4#
- 1...dxc6
- 2.Qe4#
- 2.Qee5#
- 1...Be3
- 2.Qe4#
- 2.Qee5#
- 1...Se2
- 2.Qe4#
- 2.Qee5#
- 1...d5
- 2.Rd4#
- 2.Qee5#
- 1...d6
- 2.Rd4#
- 2.Qe4#
- 1...Rxe8!
- threat
- 1.e8R?
- threat
- 2.Rd4#
- 2.Re4#
- 1...Bxb2
- 2.Re4#
- 1...Sxf3
- 2.Re4#
- 1...dxc6
- 2.Re4#
- 1...Be3
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...d5
- 2.Rd4#
- 1...Rxe8!
- threat
- 1.Be3+?
- Keys
- 1.Rxd7!
- threat
- 2.Sd3#
- 2.Rxf5#
- 1...Rxd7
- 2.Rxf5#
- 1...Bxb2
- 2.Rxf5#
- 1...Bxd7
- 2.Sd3#
- 1...Sxf3
- 2.Se6#
- 1...Qh3
- 2.Sd3#
- 1...Rf8
- 2.Sd3#
- 1...Ba6
- 2.Rxf5#
- 1...Se1
- 2.Rxf5#
- 1...Se3
- 2.Bc7#
- threat
- 1.Rxd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(c);P_PINS(C),SBLOCK::R(D)
- Tries
- Try
- B(G);CHECK
- Vars
- S(c);P_PINS(C),SBLOCK,XB(G)::R(D)
- Refutation
- B(a);XB(G)
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- S(b);XP(E)::R1(D)
- P(j);XP(H)::R1(D)
- P(j);::S(C)
- Refutation
- S(c);P_PINS(C),XR(D)
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- P(j);XP(H)::S(C)
- Q(d);::S(C)
- S(c);P_PINS(C),SBLOCK::R(D)
- P(j);::S(C)
- Refutation
- S(b);XP(E)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- B(a);XS(C)::R1(J),XP(h)
- P(j);XP(H)::S(C)
- Q(d);::S(C)
- R(l);::S(C)
- B(k);::R1(J),XP(h)
- S(c);P_PINS(C)::R1(J),XP(h)
- S(c);P_PINS(C),SBLOCK::R(D)
- Refutation
- S(b);XP(E)
- Try
- P(H);XP(j)
- Threat
- DUALS(2)
- Vars
- R(l);XP(H)::S(F)
- B(a);XS(C)::S(F)
- B(k);XP(H)::B(G)
- B(a);::B(G)
- Refutation
- S(b);XP(E)
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- B(a);XS(C)::QAR1(I)
- S(b);XP(E)::QAR1(I)
- Refutation
- R(l);XQ(I)
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- B(a);XS(C)::R1(I)
- S(b);XP(E)::R1(I)
- P(j);XP(H)::R1(I)
- B(a);::R1(I)
- S(b);::R1(I)
- P(j);::R(D)
- Refutation
- R(l);XR(I)
- Try
- Actual
- R(D);XP(j)
- Threat
- DUALS(2)
- Vars
- R(l);XR(D)::R1(J),XP(h)
- B(a);XS(C)::R1(J),XP(h)
- B(k);XR(D)::S(C)
- S(b);SBLOCK,XP(E)::S(F)
- Q(d);::S(C)
- R(l);::S(C)
- B(k);::R1(J),XP(h)
- S(c);P_PINS(C)::R1(J),XP(h)
- S(c);P_PINS(C),SBLOCK::B(G)
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